WO1999004976A1 - Ink jet recording head and ink jet recorder - Google Patents
Ink jet recording head and ink jet recorder Download PDFInfo
- Publication number
- WO1999004976A1 WO1999004976A1 PCT/JP1998/003297 JP9803297W WO9904976A1 WO 1999004976 A1 WO1999004976 A1 WO 1999004976A1 JP 9803297 W JP9803297 W JP 9803297W WO 9904976 A1 WO9904976 A1 WO 9904976A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piezoelectric
- ink jet
- vibration
- pressure generating
- generating chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1626—Manufacturing processes etching
- B41J2/1629—Manufacturing processes etching wet etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1607—Production of print heads with piezoelectric elements
- B41J2/161—Production of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1626—Manufacturing processes etching
- B41J2/1628—Manufacturing processes etching dry etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1631—Manufacturing processes photolithography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1632—Manufacturing processes machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/164—Manufacturing processes thin film formation
- B41J2/1646—Manufacturing processes thin film formation thin film formation by sputtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14387—Front shooter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14419—Manifold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14491—Electrical connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/03—Specific materials used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/11—Embodiments of or processes related to ink-jet heads characterised by specific geometrical characteristics
Definitions
- an ink-jet device that forms a piezoelectric element via a vibrating plate in a part of a pressure generating chamber communicating with a nozzle opening for discharging an ink drop, and discharges an ink drop by displacement of the piezoelectric element.
- the present invention relates to a self-recording head and an ink jet recording apparatus. Background art
- a part of the pressure generating chamber communicating with the nozzle opening for discharging the ink droplet is constituted by a vibrating plate, and the vibrating plate is deformed by a piezoelectric element to pressurize the ink in the pressure generating chamber to discharge the ink droplet from the nozzle opening.
- the ink jet recording head to be used is composed of a longitudinal vibration mode piezoelectric actuator that expands and contracts in the axial direction of the piezoelectric element, and a flexural vibration mode piezoelectric actuator. The types have been put to practical use.
- the volume of the pressure generating chamber can be changed by bringing the end face of the piezoelectric element into contact with the diaphragm, and a head suitable for high-density printing can be manufactured.
- the manufacturing process is complicated because it is necessary to perform a difficult process of cutting the comb into the shape of a comb in accordance with the arrangement pitch of the openings, and a work of positioning and fixing the cut piezoelectric element in the pressure generating chamber. .
- a piezoelectric element can be formed on the diaphragm by a relatively simple process of sticking a green sheet of a piezoelectric material in accordance with the shape of the pressure generating chamber and firing the green sheet, but the deflection is achieved. Due to the use of vibration, a certain area is required, and there is a problem that high-density arrangement is difficult.
- JP-A-5-286131 a uniform piezoelectric film is formed by a film forming technique over the entire surface of the diaphragm.
- a proposal has been made in which a material layer is formed, the piezoelectric material layer is cut into a shape corresponding to the pressure generation chamber by lithography, and a piezoelectric element is formed so as to be independent for each pressure generation chamber.
- the work of attaching the piezoelectric element to the diaphragm is not required, and the piezoelectric element can be manufactured by a precise and simple method called lithography. Therefore, there is an advantage that the thickness of the piezoelectric element can be reduced and high-speed driving can be performed. Also, in this case, the piezoelectric element corresponding to each pressure generating chamber can be driven by providing the piezoelectric material layer at least on each of the pressure generating chambers while providing the piezoelectric material layer on the entire surface of the diaphragm.
- the piezoelectric element corresponding to each pressure generating chamber is generally covered with an insulating layer, and the insulating layer is A window (hereinafter referred to as a contact hole) for forming a connection portion with a lead for supplying a voltage for driving each piezoelectric element is provided for each pressure generating chamber, and each piezoelectric element and the lead s @ A structure has been proposed in which the connection portion is formed in a contact hole.
- this structure has a problem in that stress is concentrated near the contact hole and breakage or the like is likely to occur.
- the present invention prevents an ink jet recording head capable of preventing peeling and cracking near the peripheral wall of a pressure generating chamber of a piezoelectric element, cracking of a diaphragm, and the like, and ensuring durability.
- Another object of the present invention is to provide an ink jet recording apparatus. Disclosure of the invention
- a diaphragm forming a part of a pressure generating chamber communicating with a nozzle hole, and a piezoelectric element formed on the diaphragm are provided.
- a vibration restricting portion for partially restricting vibration of at least a part of the diaphragm is provided by the pressure.
- the ink jet type expression 3 ⁇ head is provided near the boundary between the generation chamber and the peripheral wall.
- the vibration of the diaphragm in the vicinity of a portion where cracks or the like are likely to occur is partially regulated by the vibration regulating portion without extremely reducing the entire excluded volume, so that cracks and peeling are prevented. Is prevented.
- the vibration plate is provided on at least a portion along the edge of the pressure generating chamber on both sides in the width direction of the piezoelectric body active portion, and on the piezoelectric body active portion.
- An ink jet recording head characterized in that it has a thin portion which is thinner than the thickness of the corresponding portion.
- the occurrence of cracks or the like due to an increase in the amount of displacement due to the thin portion is prevented by the vibration regulating portion.
- a third aspect of the present invention is the ink jet recording apparatus according to the first or second aspect, wherein the vibration restricting portion is provided on an outer side in a longitudinal direction and on both sides of an end of the piezoelectric active portion. In the head.
- the vibration of the end portion of the piezoelectric body active portion is regulated, and cracking and peeling at the end portion are prevented.
- the vibration restricting portion is provided on a longitudinally outer side of an end of the piezoelectric body active portion, and the diaphragms on both sides of the vibration restricting portion are thin-walled.
- the ink jet recording head is characterized in that it is a part.
- the vibration of the end portion of the piezoelectric active portion is regulated, and the crack and peeling at the end portion are prevented.
- a fifth aspect of the present invention is the inkjet recording method according to the first or second aspect, wherein the vibration restricting portion is provided on a part of both sides in the width direction of the piezoelectric active portion. In the head. In the fifth aspect, the vibration is restricted at a part of the central portion of the piezoelectric body active portion, and cracking and peeling at the end portion are prevented.
- the knitting vibration restricting portion is a thick portion in which the thickness of the diaphragm is thicker than the thin portion. It is in the Et-style ⁇ Head.
- the vibration of the piezoelectric actuator is partially restricted by providing the partial thick portion.
- the knitting-vibration restricting section has another layer that restricts vibration of the vibration restricting section. In the head.
- the vibration of the piezoelectric actuator is partially regulated by providing another layer partially.
- the vibration restricting portion includes an inactive portion having an inactive piezoelectric layer on the diaphragm. It is in the ink jet record head.
- the vibration of the piezoelectric element is partially regulated by providing the partially inactive piezoelectric layer.
- the inactive portion is formed by removing an upper electrode on a piezoelectric layer constituting the piezoelectric element or via an insulating layer on the piezoelectric layer.
- m @@ is located on the ink jet recording head, which is assumed to be the portion provided.
- the vibration of the piezoelectric actuator is partially restricted by removing the upper electrode or providing the upper electrode via an insulating layer.
- a self-vibration restricting portion is provided on at least a part of an inner edge of a boundary between the pressure generating chamber and a peripheral wall thereof, and the entire film thickness is Is a thick film portion which is thicker than the entire film thickness around the piezoelectric active portion.
- the thick film portion prevents the diaphragm from being broken or the like, and realizes an ink jet recording head that achieves both improved displacement efficiency and improved reliability.
- An eleventh aspect of the present invention is the ink jet recording head according to the tenth aspect, wherein the thick film portion is provided on both sides in the width direction of the piezoelectric active portion. .
- the strength of the arm portions on both sides of the diaphragm is improved by the thick film portion.
- an inner edge of the thick film portion provided at a corner of the pressure generating chamber has a curved shape.
- the occurrence of cracks and the like in the vibrating plate near the inner edge is suppressed by eliminating the corners of the inner edge having a thickness of 3 mm.
- the thick film portion comprises the vibration plate, the piezoelectric layer, and the upper electrode.
- the ceremony record head In the ceremony record head.
- the strength of the diaphragm is improved by the diaphragm, the piezoelectric layer, and the upper electrode.
- a fifteenth aspect of the present invention is the ink jet recording head according to any one of the tenth to twenty-second aspects, wherein the thick film portion comprises the diaphragm and another layer. .
- the diaphragm and the other layers improve the strength of the diaphragm.
- a fifteenth aspect of the present invention is the ink jet recording head according to any one of the tenth to the eleventh aspects, wherein the thick portion is formed of a self-vibrating plate.
- the fifteenth aspect in the structure in which the arm portion is thinned, durability is improved by not thinning the inside of the boundary with the peripheral wall.
- the periphery of the active portion of the piezoelectric body is substantially composed of the diaphragm. In the head.
- the durability of the diaphragm is improved by using only the diaphragm for the arm portion and forming a thicker film inside the boundary with the peripheral wall.
- the periphery of the piezoelectric active portion is substantially a thinner diaphragm of the diaphragm. Ink jet expression words are in the head.
- the displacement efficiency of the piezoelectric active portion is improved by thinning the diaphragm of the arm portion, but the inside of the boundary portion with the peripheral wall is prevented from being broken by the thick film portion. .
- An eighteenth aspect of the present invention is the method according to the seventeenth aspect, characterized in that the vibrating plate comprises an elastic film and a lower part, and that the periphery of the piezoelectric active portion comprises only the elastic film. Inkjet ceremony to be found in the head.
- the displacement efficiency of the piezoelectric body active portion is improved by using only the elastic film for the arm portion.
- at least the lower electrode is left inside the boundary with the peripheral wall. The durability is improved.
- the vibration restricting portion is a part of an arm portion along an edge of the pressure generating chamber on both sides in the width direction of the piezoelectric active portion.
- the ink jet recording head is provided with a head, and the vibration of the diaphragm is regulated by gradually changing the arm of the arm.
- the displacement of the arm portion is regulated by the vibration regulating portion having an enormous thickness, the closer to the vibration regulating portion, the more destruction near the vibration regulating portion is prevented.
- the vibration restricting portion is a part of an arm portion along an edge of the pressure generating chamber on both sides in the width direction of the piezoelectric active portion.
- the ink jet type head is provided with an arm, and the vibration of the diaphragm is regulated by gradually changing the width of the arm.
- the displacement of the arm portion is regulated by the vibration regulating portion having a gradually decreasing width as the arm is closer to the vibration regulating portion, and destruction near the vibration regulating portion is prevented.
- the vibration restricting portion is a part of an arm portion along an edge of the pressure generating chamber on both sides in the width direction of the piezoelectric active portion.
- the width of the arm is gradually changed while the width of the arm is gradually changed so as to regulate the vibration of the diaphragm.
- the vibration regulating section in which the film thickness gradually increases and the width gradually decreases. The displacement of the arm portion is regulated toward the end of the pressure generating chamber, and destruction near the end of the pressure generating chamber is prevented.
- the width of the arm portion is set such that the width of the arm portion is from the width direction end of the piezoelectric active portion, and the width of the piezoelectric active portion adjacent to the piezoelectric active portion is changed.
- the distance between the arm portion and the thick film portion where iP is larger than the arm portion is provided.
- the width of the vibration restricting portion can be changed by changing the width between the piezoelectric active portion and the thick Ji portion.
- the vibration plate comprises an elastic film and a lower electrode provided on the elastic film, and the arm portion is essentially
- the inkjet recording head according to the present invention comprises the elastic film and the lower electrode, and the change in the thickness of the vibration restricting portion is a change in expansion of the piezoelectric layer.
- the twenty-third aspect by gradually increasing the JJiP of the piezoelectric film, a vibration regulating portion whose displacement is regulated toward the end is formed.
- the vibrating plate comprises the elastic film and a lower part provided on the elastic film, and the arm portion is essentially Specifically, the vibration regulating portion is made of only the elastic film, and the vibration regulating portion further includes the lower electrode, and the vibration regulating portion is characterized by a film thickness varying of the lower electrode. You can find it in the inkjet style head.
- the piezoelectric layer and the upper electrode constituting the piezoelectric active part are configured such that the pressure is higher than the pressure end from the longitudinal end of the piezoelectric active part.
- An ink jet type wherein the connection portion is formed by being continuously provided up to a region facing the peripheral wall of the generation chamber; and wherein the vibration regulating portion is provided at least in the vicinity of the connection portion of the pressure generation chamber. In the head.
- the displacement in the vicinity of the connecting portion is restricted by the vibration restricting portion, and destruction in the vicinity of the connecting portion is prevented.
- the connecting portion is configured to generate the pressure.
- the ink jet recording head is provided at a longitudinal end of the chamber.
- the vibration restricting portion prevents the pressure generating chamber from breaking near the longitudinal end.
- the piezoelectric active part is provided in a region facing the pressure generating chamber away from a peripheral wall thereof, and A contact portion serving as a connection portion between the lead portion for applying a voltage to the piezoelectric body active portion and the piezoelectric body active portion in a region opposed to the chamber;
- the ink jet type wet head is provided at least in the vicinity of the self contact portion of the pressure generating chamber.
- the contact portion is provided near a longitudinal end of the pressure generating chamber. In the country.
- the vibration restricting portion prevents the end of the pressure generating chamber near the contact portion from being broken.
- an insulator layer is formed on an upper surface of the piezoelectric active portion, and the contact portion is a contact hole formed in the insulator layer.
- An ink jet recording head characterized by being formed in the inside.
- the vibration restricting portion prevents breakage near the contact hole.
- the piezoelectric layer and the upper electrode constituting the piezoelectric active part are configured such that the pressure generation occurs from a longitudinal end of the piezoelectric active part.
- the vibration control portion is provided continuously up to a region facing the peripheral wall of the chamber to form a connecting portion, and the vibration restricting portion is provided on at least a longitudinal end of the pressure generating chamber on a side where the connecting portion is provided.
- An ink jet recording head characterized in that it is a vibration regulation layer laminated on at least a nearby active part of the precursor to regulate the vibration of the diaphragm. In the country.
- the vibration of the vibration plate at the end portion or the connection portion of the piezoelectric active portion is restricted, and peeling and cracking of the piezoelectric active portion and cracking of the diaphragm are prevented.
- the insulating layer laminated so as to cover at least the vicinity of the end in the longitudinal direction of the pressure generating chamber constitutes the vibration regulating layer. Ink jet expression head.
- the insulating layer prevents peeling and cracking of the piezoelectric active portion near the longitudinal end of the pressure generating chamber and cracking of the diaphragm.
- a layer provided on at least the coupling part of the piezoelectric active part constitutes the vibration regulating layer.
- Inkjet ceremony words are on the head.
- the ink jet recording method according to the thirty-second aspect, wherein the vibration regulating layer is formed by making the thickness of the upper electrode larger than other portions.
- the vibration is regulated by making the SUP of the third embodiment larger than the other portions, and peeling and cracking of the piezoelectric active portion and cracking of the diaphragm are prevented.
- the connecting portion may be configured such that both the piezoelectric layer and the upper electrode are narrower than a main portion of the piezoelectric active portion.
- An ink jet recording head characterized in that the recording head is formed in the ink jet recording head. According to the thirty-fourth aspect, the stress at the connecting portion is reduced, and breakage such as a crack is prevented.
- the connecting part is such that only the upper electrode is formed narrower than a main part of the piezoelectric active part.
- an inkjet expression head characterized by the following.
- a thirty-sixth aspect of the present invention is the connector according to any one of the thirty-fifth to thirty-fifth aspects, wherein the connection part connects the lead for applying a voltage to the piezoelectric body active part and the upper m3 ⁇ 4. Is provided in a portion facing the peripheral wall of the pressure generating chamber.
- the pressure generation chamber is formed on a silicon single crystal substrate by anisotropic etching, and each layer of the piezoelectric element is formed by lithography.
- An inkjet-type word is characterized by being formed by law.
- a large number of ink jet recording heads having high-density nozzle openings can be relatively easily formed.
- a thirty-eighth aspect of the present invention is an ink jet recording apparatus comprising the ink jet recording head according to any one of the first to thirty-seventh aspects.
- FIG. 1 is an exploded perspective view of an ink jet recording head according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view and a cross-sectional view of the ink jet recording head according to the first embodiment of the present invention, showing the ink jet recording head.
- FIG. 3 is a view showing a modification of the sealing plate of FIG.
- FIG. 4 is a diagram showing a thin film manufacturing process according to the first embodiment of the present invention.
- FIG. 5 is a diagram showing a thin-film manufacturing process according to the first embodiment of the present invention.
- FIG. 6 is a plan view and a cross-sectional view of a main part of the inkjet recording head according to the first embodiment of the present invention.
- FIG. 7 is a diagram showing a step of forming an insulator layer according to the first embodiment of the present invention.
- FIG. 8 is a plan view of a main part of an ink jet recording head according to Embodiment 2 of the present invention. is there.
- FIG. 9 is a plan view and a cross-sectional view of main parts of an ink jet recording head according to Embodiment 3 of the present invention.
- FIG. 10 is a plan view and a sectional view of a main part of an ink jet recording head according to Embodiment 4 of the present invention.
- FIG. 11 is a plan view and a sectional view of a main part of an ink jet recording head according to a fifth embodiment of the present invention.
- FIG. 12 is a plan view of a main part of an inkjet recording head according to a sixth embodiment of the present invention.
- FIG. 13 is a plan view and a sectional view of a main part of an inkjet recording head according to Embodiment 7 of the present invention.
- FIG. 14 is a plan view and a sectional view of a main part of an inkjet recording head according to an eighth embodiment of the present invention.
- FIG. 15 is a plan view of a main part of an inkjet recording head according to Embodiment 9 of the present invention.
- FIG. 16 is a plan view of a main part of an inkjet recording head according to Embodiment 10 of the present invention.
- FIG. 17 is a plan view and a sectional view of a main part of an inkjet recording head according to Embodiment 11 of the present invention.
- FIG. 18 is a plan view of relevant parts for explaining a thin-film manufacturing pattern according to Embodiment 11 of the present invention.
- FIG. 19 is a plan view of relevant parts explaining another thin-film production pattern of Embodiment 11 of the present invention.
- FIG. 20 is a plan view of a main part of an inkjet recording head according to Embodiment 12 of the present invention.
- FIG. 21 is a plan view and a sectional view of a main part of an ink jet recording head according to Embodiment 13 of the present invention.
- FIG. 22 is a plan view and a sectional view of a main part of an ink jet recording head according to Embodiment 14 of the present invention.
- FIG. 23 is a plan view of a main part of an ink jet recording head according to Embodiment 15 of the present invention.
- FIG. 24 is a plan view and a sectional view of a main part of an ink jet recording head according to Embodiment 16 of the present invention.
- FIG. 25 is a plan view of a main part of an ink jet recording head according to Embodiment 17 of the present invention.
- FIG. 26 is a plan view of a main part of an inkjet recording head according to Embodiment 18 of the present invention.
- FIG. 27 is a plan view of a main part of an ink jet recording head according to Embodiment 19 of the present invention.
- FIG. 28 is an exploded perspective view of an ink jet recording head according to another embodiment of the present invention.
- FIG. 29 is a cross-sectional view showing an ink jet recording head according to another embodiment of the present invention.
- FIG. 30 is a schematic diagram of an ink jet recording apparatus according to an embodiment of the present invention.
- FIG. 1 is an exploded perspective view showing an inkjet recording head according to Embodiment 1 of the present invention
- FIG. 2 is a plan view and a cross-sectional structure of one of the pressure generating chambers in a longitudinal direction.
- the flow path type 5-plate 10 is made of a silicon single crystal substrate having a plane orientation (110) in the present embodiment.
- the channel forming fiber 10 one having a thickness of about 150 to 300 m is usually used, preferably about 180 to 280 m, more preferably about 220 / A thickness of about / m is preferred. This is because the arrangement density can be increased while maintaining the rigidity of the partition wall between the adjacent pressure generating chambers.
- One surface of the forming substrate 10 is an opening surface, and the other surface is An elastic film 50 having a thickness of l to 2 / m is formed from the formed silicon dioxide.
- nozzle openings 11 and pressure generating chambers 12 are formed on the opening surface of the flow path forming substrate 10 by anisotropically etching a silicon single crystal substrate.
- the anisotropic etching when a silicon single crystal substrate is immersed in an alkaline solution such as KOH, the substrate is gradually eroded and the first (111) plane perpendicular to the (110) plane and the first (111) A second (111) plane that forms an angle of about 70 degrees with the (110) plane and forms an angle of about 35 degrees with the (110) plane appears, and the (111) plane is compared with the etching rate of the (110) plane. This is done by utilizing the property that the etching rate of the surface is about 1/180.
- anisotropic etching it is possible to perform precision processing based on the depth processing of a parallelogram formed by two first (111) planes and two oblique second (111) planes.
- the pressure generating chambers 12 can be arranged at high density.
- each pressure generating chamber 12 is formed by the first (111) plane, and the short side is formed by the second (111) plane.
- the pressure generating chamber 12 is formed by substantially etching through the flow path forming substrate 10 and reaching the elastic film 50.
- the amount of the elastic film 50 that is attacked by the alkaline solution for etching the silicon single crystal substrate is extremely small.
- each nozzle opening 11 communicating with one end of each pressure generating chamber 12 is formed narrower and shallower than the pressure generating chamber 12. That is, the nozzle opening 11 is formed by partially etching (half-etching) the silicon single crystal substrate in the thickness direction. Half etching is performed by adjusting the etching time.
- the size of the pressure generating chamber 12 for applying the ink droplet ejection pressure to the ink and the size of the nozzle opening 11 for ejecting the ink droplet depend on the amount of the ink droplet to be ejected, the ejection speed, and the ejection frequency. Optimized. For example, when recording 360 ink droplets per inch, the nozzle opening 11 needs to be formed with a groove width of several tens of meters with high accuracy.
- each pressure generating chamber 12 and a common ink chamber 31 described later are connected to a sealing plate 2 described later.
- the ink supply passage 21 is formed at a position corresponding to one end of each of the pressure generation chambers 1 and 2 and ink is communicated through the ink supply passage 21 and ink is supplied through the ink supply passage 21. 3 is supplied from 1 and distributed to each pressure generating chamber 12.
- the sealing plate 20 is provided with an ink supply communication port 21 corresponding to each of the pressure generating chambers 12 described above, and has a thickness of, for example, 0.1 to 1 mm and a linear expansion coefficient of 300. ° or less in C, and if e example 2. 5 ⁇ 4. 5 [X 1 0 one 6 /. C].
- the ink supply communication port 21 is also provided with one slit hole 21A crossing the vicinity of the ink supply side end of each pressure generating chamber 12. Alternatively, a plurality of slit holes 21B may be provided.
- the sealing layer 20 entirely covers one surface of the flow path forming substrate 10 on one surface, and also serves as a reinforcing plate for protecting the silicon single crystal substrate from impact and external force. Further, the sealing plate 20 forms one wall surface of the common ink chamber 31 on the other surface.
- the common ink chamber formation counterpart 30 forms the peripheral wall of the common ink chamber 31 and is formed by punching a stainless steel plate having an appropriate thickness according to the number of nozzles and the ink droplet ejection frequency. is there.
- the thickness of the common ink chamber forming substrate 30 is 0.2 mm.
- the ink chamber side plate 40 is made of a stainless steel substrate, and one surface of the ink chamber side plate 40 constitutes one wall surface of the common ink chamber 31.
- the ink chamber side plate 40 has a thin wall 41 formed by forming a concave portion 40a by half etching on a part of the other surface, and further receives ink supplied from outside.
- the inlet 42 is stamped and formed.
- the thin wall 41 absorbs the pressure generated at the time of discharging the ink droplet toward the side opposite to the nozzle opening 11, and the other pressure generating chamber 12 is provided with the common ink chamber 3 1.
- the ink chamber side plate 40 is set to 0.2 mm and a part thereof is set to a thickness of 0.0 in consideration of rigidity required when the ink inlet 42 is connected to an external ink supply unit.
- the thickness of the thin wall 41 is 2 mm, the thickness of the ink chamber side plate 40 may be set to 0.02 mm from the beginning in order to omit the formation of the thin wall 41 by half etching.
- the piezoelectric element 300 refers to a portion including the lower electrode film 60, the piezoelectric body 70, and the upper electrode film 80.
- one of the electrodes of the piezoelectric element 300 is set to a common electrode S, and the other ⁇ and the piezoelectric film 70 are patterned for each of the pressure generating chambers 12.
- a portion composed of either one of the electrodes and the piezoelectric film 70 subjected to the patterning and in which a piezoelectric strain is generated by applying a voltage to both electrodes is referred to as a piezoelectric active portion 320.
- the lower electric shelf 60 is a common electrode of the piezoelectric element 300 and the upper electrode 80 is an individual m ⁇ of the piezoelectric element 300, but this is reversed for convenience of the drive circuit and wiring. There is no problem.
- the piezoelectric active portion is formed for each pressure generating chamber.
- the piezoelectric element 300 and a vibration plate that is displaced by driving the piezoelectric element 300 are collectively referred to as a piezoelectric actuator.
- the elastic film 50 and the lower film 60 function as a diaphragm, but the lower electrode may also serve as the elastic film.
- the insulator layer 90 is made of a material that can be formed by a film forming method or shaped by etching, for example, silicon oxide, silicon nitride, or an organic material, preferably a photosensitive material having low rigidity and excellent electrical insulation. It is preferably formed of polyimide.
- Part of the portion of the insulator layer 90 that covers the upper surface of the portion corresponding to one end of each upper electrode film 80 is a part of the upper electric shelf 80 for connection with a lead ms i 00 described later.
- a contact hole 90a exposing the contact hole is formed.
- One end is connected to each upper film 80 via the contact hole 900a, and the other end is formed with a lead electrode 100 extending to the connection terminal portion.
- the lead electrode loo is formed so as to have a width as narrow as possible so as to reliably supply a drive signal to the upper film 80.
- a wafer of a silicon single crystal substrate serving as the flow path forming substrate 10 is thermally oxidized in a diffusion furnace at about 110 ° C. Elastic membrane Form 50.
- a lower electrode film 60 is formed by sputtering.
- Pt or the like is suitable as the lower material.
- a piezoelectric film 70 described later which is formed by a sputtering method or a sol-gel method, is fired at a temperature of about 600 to 100 ° C. in an air atmosphere or an oxygen atmosphere after a long time. It is necessary to crystallize. That is, the material of the lower electrode film 60 must be able to maintain conductivity at such a high temperature and in an oxidizing atmosphere.
- PZT is used as the piezoelectric film 70
- PbO it is desirable that there is little change in conductivity due to diffusion of Pt. For these reasons, Pt is preferable.
- a piezoelectric film 70 is formed.
- a so-called sol in which a metal organic substance is dissolved and dispersed in a solvent is applied, dried and gelled, and then baked at a high temperature.
- a so-called sol-gel method is used to obtain a piezoelectric film 70 made of a metal oxide.
- a lead zirconate titanate (PZT) -based material is suitable when used for an ink jet recording head.
- the upper electrode film 80 is formed.
- the upper electrode 80 may be a material having high conductivity, and can use many metals such as Al, Au, Ni, and Pt, and a conductive oxide. In the present embodiment, Pt is increased by sputtering.
- the lower electrode film 60, the piezoelectric film 70, and the upper electrode ring 80 are patterned.
- each pressure generating chamber 12 in FIG. 5, the pressure generating chamber 12 is not formed but is indicated by a broken line) and opposes both sides in the width direction.
- the lower electrode film 60 is formed by removing the lower electrode film 60 corresponding to the arm of the vibrating plate on both sides of the piezoelectric active portion 320 as a region.
- the entire pattern of the lower ⁇ 60 is formed, then the piezoelectric active portion 320 is patterned, and finally, the lower electrode film removing portion 350 is patterned. Then, the evening is completed.
- FIG. 6 shows a planar positional relationship between the piezoelectric active portion 320 and the lower electrode film removing portion 350 thus formed.
- the piezoelectric active portion 320 composed of the piezoelectric film 70 and the upper electrode 80 is provided in a region facing the pressure generating chamber 12, and
- the ridge portion 350 is provided adjacent to both sides of the piezoelectric active portion 320 in the width direction.
- the portion where the lower S3 ⁇ 4 film removing portion 350 is provided is a portion called a so-called arm portion of the diaphragm, and is a portion facing the vicinity of the edge along the width direction both sides of the pressure generating chamber 12.
- the lower electrode films 60 on both sides of the piezoelectric active portion 320 have been removed.
- the lower electrode film removing portion 350 is formed except for portions adjacent to both ends of the piezoelectric active portion 320. Therefore, in the region opposed to both ends in the longitudinal direction of the pressure generating chamber 12, as shown in the cross-sectional view taken along the line CC ′ of FIG. On both sides in the direction and on the outside in the longitudinal direction, there is a lower force of 60 s, which becomes a thick film portion 360 of a relatively thick film, and a vibration regulation that partially regulates the vibration of the diaphragm. Department.
- the thick film portion 360 may be provided at one end of the pressure generating chamber 12.
- the lower electrode film removing portion 350 is formed by completely removing the lower m @ film 60.
- the lower electrode film removing portion 350 is formed by half etching or the like.
- the lower electrode film removed portion 35 OA may be a thin film formed by removing a part of the lower electrode film 60 in the thickness direction.
- the elastic film 50 may be omitted, and the lower film 60 may serve as an elastic body and a lower electrode.
- An insulating layer 90 having electrical insulation is formed so as to cover at least the periphery of the upper surface of the element 0, and the side surfaces of the piezoelectric element 70 and the lower electrode film 60 (see FIG. 1).
- an upper electrode film 800 is formed on a part of the portion of the insulator layer 90 covering the upper surface of the portion corresponding to one end of each piezoelectric active portion 320 to connect to a lead electrode 100 described later. Is formed to expose a part of the contact hole 90a.
- One end is connected to each of the upper cabinets 80 via the contact hole 900a, and a lead 100 is formed, the other end of which extends to the connection terminal portion.
- the lead 1100 is formed so as to have a width as narrow as possible so that the drive signal can be supplied to the upper electrode film 80 without fail.
- FIG. 7 shows a process of forming such an insulator layer.
- an insulator layer 90 is formed so as to cover the peripheral portion of the upper electrode film 80, the side surfaces of the piezoelectric film 70 and the lower electrode film 60.
- Suitable materials for the insulator layer 90 are as described above, but in the present embodiment, a negative photosensitive polyimide is used.
- a contact hole is formed in a portion corresponding to the vicinity of the end on the ink supply side of each pressure generating chamber 12.
- Form 90a The contact hole 90a may be provided at a portion corresponding to the piezoelectric active portion 320 of the pressure generating chamber 12, and may be provided at, for example, a central portion or a nozzle-side end portion.
- a conductor m such as Cr—Au is sworded over the entire surface, and then the lead is formed to form a lead m3 ⁇ 4 i 0.
- the silicon single crystal substrate is anisotropically etched with the above-mentioned alkali solution to form the pressure generating chambers 12 and the like.
- a number of chips are simultaneously formed on one wafer, and after the process is completed, a flow path of one chip size as shown in FIG.
- the substrate is divided every 10 substrates. Further, the divided flow path forming substrate 10 is sequentially bonded to the sealing plate 20, the common ink chamber forming substrate 30, and the ink chamber side plate 40 to form an ink jet recording head. .
- the ink-jet head thus configured takes in ink from an ink inlet 42 connected to an external ink supply means (not shown), fills the inside from the common ink chamber 31 to the nozzle opening 11 with ink,
- a voltage is applied between the lower film 60 and the upper film 80 through the lead electrode 100, and the elastic film 50 and the lower film 60 are applied.
- the piezoelectric film 70 By deforming the piezoelectric film 70 flexibly, the pressure in the pressure generating chamber 12 increases, and ink droplets are ejected from the nozzle opening 11.
- FIG. 8 shows the shapes of the piezoelectric active portion and the pressure generating chamber of the ink jet recording head according to the second embodiment.
- the piezoelectric body active section 320 is formed in a region facing the pressure generation chamber 12 apart from the peripheral wall of the pressure generation chamber 12.
- Embodiment 3 is the same as Embodiment 1 except that the piezoelectric film 70 and the upper electrode 80 constituting 320 are continuously extended to the peripheral wall to constitute the connecting portion 3221.
- the lower part of the piezoelectric active part 320 at the end of the pressure generating chamber 12 near the connecting part 321 and both sides in the width direction of the connecting part 321 are provided with a relatively thick film lower electric shelf.
- a thick film portion 36 OA is provided. In this case, the vicinity of the illustrated region D is the vibration restricting portion.
- the cross section taken along the line E-E 'and the cross section taken along the line F--F are similar to those shown in FIGS. 6 (b) and (c), respectively.
- 0 is formed, and a lower electrode film 60 is formed on both sides of the end of the piezoelectric body active portion 320 to form a thick film portion 36OA.
- the length of the vibration restricting portion that is, the distance from the end of the lower electrode S large removal portion 350 to the end of the pressure generating chamber 12 (in this embodiment, ( In the figure, the area D) is preferably at least 1/2 of the width of the pressure generating chamber 12.
- FIG. 9 shows shapes of a piezoelectric active portion and a pressure generating chamber of an ink jet recording head according to Embodiment 3 of the present invention.
- This embodiment is the same as the first embodiment, except that the lower electrode removing portion 350B is formed to extend in the longitudinal direction from both ends of the piezoelectric active portion 320. Therefore, at the end of the pressure generating chamber 12, the portion sandwiched by the lower electrode ⁇ -removed portion 350 ° forms the thick film portion 360 °.
- the vibration due to the voltage application is restricted only in the vicinity of both ends of the piezoelectric active portion 320 as in the first embodiment, and the displacement becomes relatively small.
- the amount of displacement at the end can be suppressed without greatly reducing the amount of displacement of the piezoelectric element, and peeling and cracking of the end of the piezoelectric active portion 320 can be prevented.
- the thick section 360 B may be provided at one end of the pressure generating chamber 12.
- FIG. 10 shows the shapes of the piezoelectric active portion and the pressure generating chamber of the ink jet recording head according to Embodiment 4 of the present invention.
- This embodiment is different from the above-described embodiment in that the lower film removing section 350 C is provided in a U-shape along three edges except for one end of the pressure generating chamber 12. . Further, from one end where the lower MS film removing section 350 C is not provided, the piezoelectric film 70 and the upper electrode 80 constituting the piezoelectric active section 320 are continuously extended to the peripheral wall. However, the part extending from the vicinity of the peripheral wall to the peripheral wall is not a mere thick film part but an inactive piezoelectric active part 325.
- the inactive piezoelectric active part 3 25 is composed of only the lower electrode film 60 and the piezoelectric film 70, as shown by the cross section H—H in FIG. 10 (b). 0 is the removed structure. Therefore, even if a voltage is applied to the piezoelectric active section 320, it is not driven.
- the active piezoelectric active portions 3 25 may be provided at both ends of the pressure generating chamber 12.
- an inactive piezoelectric active portion 325A is formed. May be.
- FIG. 11 shows the shapes of the piezoelectric active portion and the pressure generating chamber of the ink jet recording head according to Embodiment 5 of the present invention.
- the present embodiment is the same as the first embodiment except that a thick film portion 95 of an insulator layer 90 is provided instead of the thick film portion 360 of the first embodiment to serve as a vibration restricting portion.
- the portion of the piezoelectric active portion 320 other than both end portions is composed of the upper electrode film 8 having the normal thickness of the insulator layer 90.
- the thick-film insulator layer 95 is provided on the upper part 80. .
- the thick-colored edge layer 95 may be provided only at one end of the pressure generating chamber 12.
- the thickness M of the insulator layer 95 only needs to be relatively thicker than other portions.
- another layer may be provided on the insulator layer 90.
- FIG. 12 shows the shapes of the piezoelectric active portion and the pressure generating chamber of the ink jet recording head according to Embodiment 6 of the present invention.
- the thick film portion 360 C of the lower electric shelf 60 is provided on both sides of the substantially central portion in the longitudinal direction of the piezoelectric active portion 320, and the other edge portions of the pressure generating chamber 12 are provided.
- the embodiment is the same as the first embodiment except that a U-shaped lower ma-jeong-yo-gao section 350D is formed along the line.
- the vibration due to the voltage application is regulated so as not to be unnecessarily large at the substantially central portion of the piezoelectric active portion 320, and as a whole, It is possible to prevent peeling, cracking, and the like of the end portion of the piezoelectric active portion 320 without greatly reducing the displacement amount of the piezoelectric element. (Difficult form 7)
- FIG. 13 shows a plan view and a cross-section of a main part of the seventh embodiment.
- the basic configuration of the present embodiment is similar to that of the second embodiment, and the piezoelectric film 70 and the upper electrode 80 constituting the piezoelectric active portion 320 are separated from one end in the longitudinal direction of the pressure generating chamber 12. It has a connecting portion 321 that extends continuously on the peripheral wall.
- the piezoelectric film 70 and the piezoelectric active portion 320 composed of 80 ⁇ m are basically provided in a region facing the pressure generating chamber 12.
- the width of the pressure generating chamber 12 is slightly smaller than the width of the pressure generating chamber 12.
- the piezoelectric film 70 and the upper electrode film 80 are continuously extended from a region facing the pressure generating chamber 12 to a region facing the peripheral wall.
- the vicinity of the boundary between the region facing the pressure generating chamber 12 and the region facing the peripheral wall is referred to as a connecting portion 3221.
- both ends in the longitudinal direction of the piezoelectric active portion 320 and the entire connecting portion 321 are covered with the insulator layer 90.
- an insulator having a normal thickness is formed on the piezoelectric active portion 320 in a region facing the pressure generating chamber 12.
- the layer 90 is formed, on both ends of the piezoelectric active portion 320 and on the connecting portion 321, as shown in the cross section L-L in FIG.
- a thick-film insulator layer 95 having a large thickness is formed to form a vibration regulation layer 325 for regulating the vibration of the diaphragm.
- the thick blue color body 95 at a position corresponding to the piezoelectric film 70 and the upper film 80 continuously extended by the connecting portion 32 1 has the lead ® @ 100 and the upper A contact hole 90a for connecting to 0 is formed.
- the lower electrode film 60 facing the vicinity of the boundary with the peripheral wall on both sides in the width direction of the pressure generating chamber 12 and on both sides of the piezoelectric active portion 320, that is, the lower electrode film 60 of the arm portion of the diaphragm is removed.
- the point that the lower electrode S removal portion 350 is formed is as described above.
- the thick-film insulator layer 95 is provided on both ends of the piezoelectric active portion 320 and on the connecting portion 321, but may be provided only on the connecting portion 3221 side. Good.
- the thick-film insulator layer 95 only needs to be relatively thicker than other portions. Therefore, another layer may be laminated on the insulator layer 90, or an insulator layer having a normal thickness may be provided only on the thick insulator layer 95.
- FIG. 14 shows a plan view and a cross section of a main part of an ink jet recording head according to Embodiment 8 of the present invention.
- a thick film portion 85 thicker than the upper portion 80 of the other portion is formed on the piezoelectric film 70 in a region opposed to the boundary and the peripheral wall of the pressure generating chamber 12 to restrict vibration.
- Embodiment 3 is the same as Embodiment 7, except that the layer is a layer A of 25 A and the vibration of the diaphragm is regulated in a region facing the region of the pressure generating chamber 12.
- the piezoelectric active section 320 is basically provided in a region opposed to the pressure generating chamber 12 as in the seventh embodiment, At one end of 12, the piezoelectric film 70 and the upper electric shelf 80 are extended from the region facing the pressure generating chamber 12 to the region facing the peripheral wall, and the connecting portion 3 2 1 Is composed. Further, an insulator layer 90 is formed on the piezoelectric active portion 320 and the connecting portion 321, and a lead ⁇ 100 is formed on the insulator layer 90 in a region facing the peripheral wall. A contact hole 90a for connecting to the electrode film 80 is formed. In addition, the lower electric power collecting portion 350 is removed to form a lower electric power removing portion 350 in the arm portion of the diaphragm.
- the upper electrode film 80 is formed with a normal thickness in a region facing the pressure generating chamber 12 as shown in the cross section MM of FIG. 14 (b). In the area 3 21 and the area opposed to the peripheral wall, as shown in the N--N 'cross section of FIG. 14 (c), a thick film section 85 thicker than the other sections is formed, and the vibration regulating layer 3 25 Make up A.
- the thick film portion 85 is formed on the piezoelectric film 70 in a region facing the connecting portion 32 1 and the peripheral wall, but at least the piezoelectric film 7 of the connecting portion 3 21 is formed. If it is formed on 0, the same effect can be obtained. Further, a thick-film insulator layer 95 as in the seventh embodiment may be further provided in the configuration of the present embodiment, whereby a more remarkable effect is exerted.
- FIG. 15 shows the pattern shape of the piezoelectric active portion and the like in the vicinity of the pressure generating chamber of the inkjet type self-recording head according to the ninth embodiment of the present invention.
- the piezoelectric film 70 and the upper electric shelf 80 constituting the piezoelectric active portion 320 are opposed to the peripheral wall from the region facing the pressure generating chamber 12.
- Embodiment 7 is the same as Embodiment 7 except that the connecting portion 322, which is the portion crossing the region to be connected, is narrower than the other portions.
- the connecting portion 3222 of this embodiment is formed by narrowing both the piezoelectric film 70 and the upper surface 80.
- the piezoelectric active portion 320 when the piezoelectric active portion 320 is driven, the vibration of the diaphragm is suppressed by the insulator layer thick film portion 95 in a region facing the connecting portion 32 and the peripheral wall.
- the bending is gradually generated from the inside of the pressure generating chamber 12 and the boundary of the peripheral wall toward the pressure generating chamber 12, so that the stress at the connecting portion 32 2 becomes small, and cracks and the like are broken. Is prevented and durability is improved.
- FIG. 16 shows an example of the piezoelectric active portion and the like near the pressure generating chamber of the ink jet recording head according to Embodiment 10 of the present invention.
- the upper electrode film 80 is formed to be narrow in the vicinity of the connecting portion 323, and the piezoelectric film 70 has the same thickness as the other portions. Other than that, it is the same as the embodiment ⁇ 9.
- FIG. 17 shows the planar position relationship between the piezoelectric active portion 320 and the lower electrode film removing portion 350 near the pressure generating chamber of the ink jet recording head according to Embodiment 11 of the present invention. Show the person in charge. Since the basic structure of the present embodiment is the same as that of the first embodiment, members having the same functions are denoted by the same reference numerals and overlapping description will be omitted.
- the piezoelectric active portion 320 composed of the piezoelectric film 70 and the upper electrode film 80 is separated from the peripheral wall in a region facing the pressure generating chamber 12 Establishment
- the lower electrode film removing portion 350 is provided adjacent to both sides in the width direction of the piezoelectric active portion 320.
- the part where the lower part 350 is provided is a so-called arm part, which is a part facing the vicinity of the edge along the width direction both sides of the pressure generating chamber 12.
- FIG. 17 (a) 0- ⁇ , and FIG. 17 (b), which is a cross-section, the lower electric wires 60 on both sides of the piezoelectric active portion 320 are removed.
- the diaphragm of the lower electromagnetism removing portion 350 is made of only the elastic film 50, has a relatively smaller thickness than other regions, and is easily deformed.
- the lower electrode film removing section 350 may remove only a part of the lower film 60 in the thickness direction by half etching or the like, and may also extend to a part of the elasticity S 50 in the thickness direction. It may be removed.
- the lower part 350 of FIG. 17 is a cross section of FIG. 17 (a), and FIG. 17 (c) which is a P-P ′ cross section thereof, and FIG.
- FIG. 17 (d) near the end of the pressure generating chamber 12 where the contact hole 90a is formed, the width is gradually narrower toward the end and gradually thicker toward the end.
- a vibration regulation part 355 is formed. Therefore, the vibrating plate in the vicinity of this end is less likely to be deformed than the other lower film removing portion 350.
- the vibration regulation unit 355 may be formed by patterning the lower cabinet 60 in a step shown in FIG. 5C using a pattern shown in FIG. 18A. By doing so, it can be formed. In this pattern, an opening 450 is formed at a position facing between the piezoelectric active portions 320, and extends on one end side in parallel with the pressure generating chamber 12, ie, the piezoelectric active portion At the position corresponding to the arm of 320, a narrow portion 450a which is gradually reduced toward both corners is formed, and the thicker film resist remains in the narrower portion. Opening. As a result, the vibration restricting portion 355 is formed such that the width is gradually narrowed toward the end portion and the thickness is gradually increased toward the end portion. The thick portion at the end of the vibration control portion 355 or the lower portion 60 may be slightly etched. In any case, it is only necessary that the P change is generated gradually.
- the vibration due to the voltage application is restricted only in the vicinity of the end portion of the piezoelectric active portion 320, and the displacement amount becomes relatively small. Since the amount of displacement at the end can be suppressed without greatly reducing the amount of displacement of the piezoelectric element, peeling and cracking of the end of the piezoelectric active section 320 can be prevented. Further, cracks and the like near the contact hole 90a can be prevented.
- the patterning step has been described as being performed separately, it can be performed continuously using the same resist S. That is, for example, after the piezoelectric active part 320 is subjected to the patterning using the pattern as shown in FIG. 18 (b), the lower electrical cabinet removing part 350 is formed in the same pattern. Can be formed.
- the lower electrode removing section 350 be provided between all the piezoelectric active sections 3200.
- An intermediate portion having the same film configuration as that of the portion 320 may be formed. In this case, as will be described later, a vibration regulating portion 355 is formed.
- the intermediate portion is patterned together with the piezoelectric active portion 320 in the step of FIG. 5 (b).
- the resist pattern is divided between a mask section 420 for patterning each piezoelectric element active section 320 and a mask section 4 25 for patterning the intermediate section.
- One end of the mask portion 425 has a wide shape so that the end portion is closer to the mask portion 420 for the piezoelectric active portion 320.
- an intermediate portion having a pattern close to each of the piezoelectric active portions 320 at one end can be formed.
- the opening 451 which is adjacent to the wide portion of the mask portion 420, a narrow portion 451a narrowing toward the end is formed.
- the piezoelectric film 70 remains in the narrow portion 451a when the piezoelectric active portion 320 is set, and thereafter, as described above, further using the same pattern as described above.
- the vibration regulating portion 365 is formed such that the width is gradually narrowed toward the end and the thickness is gradually increased toward the end as described above. Can be.
- the lower S3 ⁇ 4 film removed portion 350 may be formed using a resist pattern as shown in FIG. 19 (b).
- This resist pad has an opening 452 in which one end is narrower toward the end.
- the opening 452 is an opening in which a thicker film resist is left in a narrower portion at a narrow portion 452a at one end. In this case, it is not necessary to form a wide portion in the mask portion 425 as shown in FIG. 19 (a).
- the vibration due to the voltage application is restricted only in the vicinity of the end of the piezoelectric active portion 320, and the displacement amount is relatively large, as in the case described above. Since the displacement amount at the end can be suppressed without greatly reducing the displacement amount as a whole, the peeling and cracking of the end portion of the piezoelectric active portion 320, and the contact hole 90a Cracks in the vicinity can be prevented.
- the lower electrode film removing section 350 may be provided not only on both sides in the width direction of the piezoelectric body active section 320 but also at the end.
- the narrow portions 450 a to 4 The thicker resist film remains at the end of 52a, and this is used to form the vibration regulating portion 355.
- the reason why the resist is left in the narrow portion 450a to 5252a is to reduce the resolution of the patterning by, for example, increasing the distance between the mask and the substrate during exposure. This is for appropriate adjustment. Since the pattern is difficult to be removed in a narrower area, the resist film can be left.
- the resist remains in the thick film as narrow as this, when dry etching is performed using this pattern, the resist is also subjected to the upper electrode film 80, the piezoelectric film 70, and the lower electrode film. Since etching is performed in the same manner as in the case of 60, etc., as a result, a thick film portion is formed in proportion to the remaining portion of the resist.
- FIG. 20 shows a plan view of a main part of an inkjet type self-recording head according to Embodiment 12 of the present invention.
- the piezoelectric film 70 and the upper electrode layer 80 constituting the piezoelectric active part 320 are extended from one longitudinal end of the pressure generating chamber 12 to the peripheral wall, and the pressure generating chamber 12 And a connecting portion 321 crossing the boundary between the region facing the peripheral wall and the region facing the peripheral wall, and the vibration regulating portion 3 of the lower electrode film removing portion 350 near the connecting portion 321.
- Form 5 5 A The width of the vibration regulation part 3 5 5 A gradually increases, as in Difficult form 11 It becomes the vibration regulation part which becomes narrower and Ji if becomes thicker gradually.
- FIG. 21 shows a main part plane of the ink jet type recording head according to Embodiment 13 of the present invention and its RR ′ cross section.
- the width of the vibration restricting portion 365 B at one end of the lower electrode film removing portion 350 is gradually narrowed toward the end, but there is no change in il. .
- Such a structure can be formed by completely removing the resist in the narrow portion 450a of the opening 450 in FIG. 18 to form the opening.
- the vibration at the vibration restricting portion 3555B is restricted as in the case of Embodiment 11, and breakage near the vibration restricting portion 3555B is prevented.
- FIG. 22 shows a main part plane of an ink jet recording head according to Embodiment 14 of the present invention and its SS ′ section.
- the vibration restricting portion 3555C at one end of the lower electrode film removing portion 350 is a force whose film thickness gradually increases toward the end, a pressure directly related to the regulation of vibration. There is no change in width in the area facing the generation chamber 12.
- Such a structure can be similarly formed using a resist pattern having an opening narrower toward the end as described above.
- the width of the outermost portion is substantially the same as or larger than the width from the widthwise end of the piezoelectric active portion 320 to the edge of the pressure generating chamber 12.
- the vibration at the vibration restricting portion 365 is restricted, and destruction or the like near the vibration restricting portion 3555C is prevented.
- a mask having an opening in which the opening width does not change at the portion corresponding to the vibration regulation portion 355C but the resist film is gradually thicker toward the end can also be formed by gradually forming a thin resist layer into multiple layers.
- FIG. 23 shows the essentials of an ink jet recording head according to Embodiment 15 of the present invention.
- This embodiment is an example in which the vibration restricting portion 355D is provided substantially at the center of the piezoelectric active portion 320.
- the vibration restricting portion is provided near the connecting portion 32A.
- 35 5 D may be provided.
- the vibration restricting portions 355D are formed on both sides in the width direction of the piezoelectric active portion 320 near the connecting portion 321A and on both sides of the connecting portion 321A.
- the contact hole 90a when the contact hole 90a is provided substantially at the center of the piezoelectric active portion 320, the vicinity of the contact hole 90a, that is, the piezoelectric active portion 3 Vibration restricting portions 3555D may be provided on both sides of the central portion of 20 and on both sides of lead electrode 100.
- lower film removing portions 350 are provided on both sides of the piezoelectric active portion 320, and the vibration regulating portion 3555D is provided with a width and a film thickness of the lower electrode film 60. Is changed by gradually changing the width toward the substantially central portion of the piezoelectric active portion 320, and gradually increasing the thickness toward the central portion. Has become.
- the vibration in the vibration restricting portion 3555D is restricted as in the case of Embodiment 11, and the vibration near the vibration restricting portion 3555D is prevented.
- FIG. 24 shows a planar positional relationship and a cross section of the piezoelectric active portion 320 and the lower electrode film removing portion 350 of the ink jet recording head according to Embodiment 16 and the pressure generating chamber 12. Show. Since the basic configuration is the same as that of the first embodiment, members having the same functions are denoted by the same reference numerals, and redundant description will be omitted.
- the piezoelectric body active part 320 composed of the piezoelectric film 70 and the upper part 80 is provided in a region facing the pressure generating chamber 12, and It is formed with a width slightly smaller than the width of the generation chamber 12.
- An insulator layer 90 and a lead m @ 100 are formed on the upper electric shelf 80, and the insulator layer 90 corresponding to one end of the piezoelectric active section 320 is formed.
- the lower electrode film removing portion 350 faces the vicinity of the boundary with the peripheral wall of the pressure generating chamber 12, and
- the piezoelectric element is formed in a region extending around the driving section 320.
- the thick film portion 370 is formed by leaving the lower electrode film 60 without removing it. In other words, when the lower removal film 350 is formed in the step of FIG. 5 (c), the lower portion of the lower removal film 350 is left.
- the vibration of the diaphragm near the contact hole 90a is regulated by the thick film section 370.
- This can prevent the piezoelectric active portion 320 from being broken.
- the thickness of the thick section 370 enhances the durability of the diaphragm in a region facing the inside of the boundary between the pressure generating chamber 12 and the peripheral wall. In particular, this is effective when the rigidity of the diaphragm is reduced by forming a lower removal film 350 around the piezoelectric active portion 320 as in the present embodiment. .
- the lower electrode film removing portion 350 is formed around the piezoelectric active portion 320, and the thick film portion 70 is formed only by the lower S film 60. It is not limited to this. As described above, it is sufficient that the thickness B of the portion 370 is relatively thicker than the other portion in the area facing the pressure generating chamber 12. Instead, the piezoelectric film 70 and the upper electrode film 80 may be left.
- the lower electrode film 60 or the elastic film 50 from which the lower electrode film 60 has been removed may be insulated. By stacking another layer such as a body layer, the thick film portion 370 may be thicker than the other portions.
- the lower portion 350 may not necessarily be formed.
- the thick portion 370 may be formed, for example, on the lower electrode S60 and the piezoelectric film 70 on the lower electrode S60.
- the film 80 By leaving the film 80 or, for example, by laminating another layer such as an insulator layer on the lower S @ film 60, it may be formed relatively thicker than other portions.
- FIG. 25 shows the planar positional relationship with 2.
- the present embodiment is different from the embodiment 16 except that the inner edge of the thick film portion 37 OA formed in a region facing the corner of the pressure generating chamber 12 is formed by a curve. The same is true. Further, in the present embodiment, a similar thick film portion 37OA is provided also at the corner at the other end of the pressure generating chamber 12.
- FIG. 26 shows a planar positional relationship between the piezoelectric active section 320 and the lower electrode film removing section 350 of the form 18 and the pressure generating chamber 12.
- the piezoelectric film 70 and the upper electrical shelf 80 constituting the piezoelectric active portion 320 are continuously extended from the region facing the pressure generating chamber 12 to the region facing the peripheral wall.
- Embodiment 16 is the same as Embodiment 16 except that a contact portion between the lead electrode 100 and the upper electrode 80 is provided in a region facing the peripheral wall.
- the piezoelectric active part 320 is basically provided in a region facing the pressure generating chamber 12, and the piezoelectric film is provided at one end of the pressure generating chamber 12.
- 70 and the upper electrode film 80 extend to a region facing the peripheral wall, and have a connecting portion 3 21 near a boundary with the region facing the pressure generating chamber 12.
- a thick film portion 370B is formed in the vicinity of 21. Note that this thick film portion 370B is formed by, for example, leaving a lower layer of 60 as in the above-described embodiment.
- the vibration at the end near the connecting portion 321 of the piezoelectric active portion 320B is suppressed by the thick Ji portion 370B, Destruction of the board can be prevented.
- the thick film portion 370B may be provided at the other end of the pressure generating chamber 12 as well.
- FIG. 27 shows a planar positional relationship between the piezoelectric active section 320 and the lower power section 350 of the embodiment 19 and the pressure generating chamber 12.
- the lower part of the lower shelf 350 is formed in a groove shape along the piezoelectric active part 320
- the thick film part 370C is formed as follows.
- the pressure generation chamber 12 is provided in the region facing the boundary with the peripheral wall on both sides in the width direction, and is provided in the longitudinal direction, and further, is arranged so as to surround the end of the piezoelectric active part 320 in the pressure generation chamber 12.
- Embodiment 18 is the same as Embodiment 18, except that a thick film portion 370D having a curved inner edge is provided.
- the thick film portions 370C and 370D prevent the diaphragm from being destroyed in a region facing the boundary with the peripheral wall of the pressure generating chamber 12. be able to.
- the basic structure of the ink jet recording head is not limited to the above-described one.
- the common ink chamber forming plate 30 may be made of glass ceramics.
- the thin film 41 may be made of glass ceramics as a separate member. Changes are free.
- the nozzle openings are formed on the end surface of the formation substrate 10, but the nozzle openings connected in a direction perpendicular to the surface may be formed.
- FIG. 28 is an exploded perspective view of the embodiment configured as described above, and FIG.
- Figure 9 shows each of them.
- the nozzle opening 11 is formed in the nozzle substrate 120 opposite to the piezoelectric element, and the nozzle communication port 22 for communicating the nozzle opening 11 with the pressure generating chamber 12 is sealed.
- the present embodiment is basically the same as the above-described embodiment except that the thin plate 41A and the ink chamber side plate 4OA are formed as separate members, and the opening 40b is formed in the ink chamber side plate 40. It is the same, and the same members are denoted by the same reference numerals, and overlapping description will be omitted.
- a vibration restricting portion is provided to partially restrict the vibration of the piezoelectric active portion to peel off both ends of the piezoelectric film, and Cracks can be prevented.
- a thin-film ink jet recording head that can be manufactured by applying a lithography process is exemplified.
- the present invention is not limited to this.
- ink jet recording of various structures such as one that forms a pressure generating chamber by lamination, one that forms a piezoelectric film by pasting a green sheet or screen printing, or one that forms a piezoelectric film by crystal growth
- the present invention can be applied to a pad.
- an insulator layer is provided between the piezoelectric element and the lead.
- the present invention is not limited to this.
- the insulator layer is not provided, and an anisotropic conductive film is thermally fused to each upper electrode.
- the anisotropic conductive film may be connected to the lead wire, or may be connected using various bonding techniques such as wire bonding.
- the present invention can be applied to ink jet heads having various structures without departing from the spirit thereof.
- the ink jet recording head of each of the embodiments constitutes a part of a word head unit including an ink which communicates with an ink cartridge or the like, and is mounted on an ink jet recording apparatus.
- FIG. 30 is a schematic view showing an example of the ink jet recording apparatus.
- the recording heads 1A and 1B having the ink jet type self-recording head are provided with detachable cartridges 2A and 2B constituting an ink supply means.
- the carriage 3 on which the recording heads 1A and 1B are mounted is provided on a carriage shaft 5 attached to the apparatus main body 4 so as to be movable in the axial direction.
- the recording head units 1A and 1B discharge, for example, a black link thread material and a power link composition, respectively.
- the driving force of the driving motor 6 is transmitted to the carriage 3 via a plurality of gears and a timing belt 7 (not shown), so that the carriage 3 having the recording heads 1A and 1B is attached to the carriage shaft 5. Is moved along.
- the apparatus body 4 is provided with a platen 8 along the carriage axis 5, and the recording sheet S, which is a recording medium such as paper fed by a paper feed roller or the like, is not shown in FIG. It is wrapped around 8.
- the piezoelectric active member facing the pressure generating chamber By providing a vibration regulation part that regulates the vibration of a part of the part, the vibration is partially restricted and the total displacement is not significantly reduced. Can be prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98933911A EP0943437B1 (en) | 1997-07-25 | 1998-07-23 | Ink jet recording head and ink jet recorder |
| DE69811333T DE69811333T2 (de) | 1997-07-25 | 1998-07-23 | Tintenstrahlaufzeichnungskopf und tintenstrahlaufzeichnungsgerät |
| US09/242,964 US6315400B1 (en) | 1997-07-25 | 1998-07-23 | Ink jet recording head and ink jet recorder |
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9/200652 | 1997-07-25 | ||
| JP20065297 | 1997-07-25 | ||
| JP25552297 | 1997-09-19 | ||
| JP9/255522 | 1997-09-19 | ||
| JP9/324821 | 1997-11-26 | ||
| JP32482297A JP3371780B2 (ja) | 1997-11-26 | 1997-11-26 | インクジェット式記録ヘッド |
| JP32482197A JP3374900B2 (ja) | 1997-11-26 | 1997-11-26 | インクジェット式記録ヘッド |
| JP9/324822 | 1997-11-26 | ||
| JP1140698 | 1998-01-23 | ||
| JP10/11406 | 1998-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999004976A1 true WO1999004976A1 (en) | 1999-02-04 |
Family
ID=27519279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/003297 Ceased WO1999004976A1 (en) | 1997-07-25 | 1998-07-23 | Ink jet recording head and ink jet recorder |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6315400B1 (ja) |
| EP (1) | EP0943437B1 (ja) |
| DE (1) | DE69811333T2 (ja) |
| WO (1) | WO1999004976A1 (ja) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4300610B2 (ja) * | 1998-12-25 | 2009-07-22 | 富士フイルム株式会社 | インクジェット記録ヘッド及びプリンタ装置 |
| JP4403353B2 (ja) * | 2000-02-18 | 2010-01-27 | 富士フイルム株式会社 | インクジェット記録ヘッドの製造方法及びプリンタ装置 |
| JP3491688B2 (ja) | 2000-10-16 | 2004-01-26 | セイコーエプソン株式会社 | インクジェット式記録ヘッド |
| EP1199171A3 (en) * | 2000-10-16 | 2003-04-09 | Seiko Epson Corporation | Ink-jet recording head and ink-jet recording apparatus |
| US6979077B2 (en) * | 2002-02-20 | 2005-12-27 | Brother Kogyo Kabushiki Kaisha | Ink-jet head and ink-jet printer having ink-jet head |
| JP4708667B2 (ja) * | 2002-08-08 | 2011-06-22 | キヤノン株式会社 | アクチュエータおよび液体噴射ヘッド |
| US7131718B2 (en) * | 2003-06-20 | 2006-11-07 | Ricoh Printing Systems, Ltd. | Inkjet head and ejection device |
| US7344228B2 (en) * | 2004-08-02 | 2008-03-18 | Fujifilm Dimatix, Inc. | Actuator with reduced drive capacitance |
| US7837305B2 (en) | 2007-01-30 | 2010-11-23 | Panasonic Corporation | Piezoelectric element, ink jet head, and ink jet recording device |
| EP1997635B1 (en) * | 2007-05-30 | 2011-07-27 | Océ-Technologies B.V. | Piezoelectric actuator and method of producing the same |
| CN102202895B (zh) * | 2008-10-31 | 2014-06-25 | 惠普开发有限公司 | 静电液体喷射致动机构及静电液体喷射装置 |
| JP2012016900A (ja) * | 2010-07-08 | 2012-01-26 | Seiko Epson Corp | 液滴吐出ヘッド及び液滴吐出装置 |
| JP5644581B2 (ja) * | 2011-02-22 | 2014-12-24 | 株式会社リコー | インクジェットヘッド及びインクジェット記録装置 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04185348A (ja) * | 1990-11-17 | 1992-07-02 | Seiko Epson Corp | 液体噴射ヘッド及びその製造方法 |
| JPH05169654A (ja) * | 1991-12-20 | 1993-07-09 | Seiko Epson Corp | インクジェット記録ヘッド及びその製造方法 |
| JPH05261921A (ja) * | 1992-03-18 | 1993-10-12 | Seiko Epson Corp | インクジェット式印字ヘッド及びその製造方法 |
| JPH05286131A (ja) | 1992-04-15 | 1993-11-02 | Rohm Co Ltd | インクジェットプリントヘッドの製造方法及びインクジェットプリントヘッド |
| JPH05330069A (ja) * | 1992-06-03 | 1993-12-14 | Seiko Epson Corp | インクジェット記録ヘッドの製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3495761B2 (ja) * | 1992-07-21 | 2004-02-09 | セイコーエプソン株式会社 | インクジェット式プリンタにおけるインク滴の形成方法、及びインクジェット式記録装置 |
| US5545461A (en) * | 1994-02-14 | 1996-08-13 | Ngk Insulators, Ltd. | Ceramic diaphragm structure having convex diaphragm portion and method of producing the same |
| JP3501860B2 (ja) * | 1994-12-21 | 2004-03-02 | 日本碍子株式会社 | 圧電/電歪膜型素子及びその製造方法 |
| EP0884184B1 (en) * | 1996-10-28 | 2001-05-30 | Seiko Epson Corporation | Ink jet recording head |
-
1998
- 1998-07-23 WO PCT/JP1998/003297 patent/WO1999004976A1/ja not_active Ceased
- 1998-07-23 EP EP98933911A patent/EP0943437B1/en not_active Expired - Lifetime
- 1998-07-23 DE DE69811333T patent/DE69811333T2/de not_active Expired - Lifetime
- 1998-07-23 US US09/242,964 patent/US6315400B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04185348A (ja) * | 1990-11-17 | 1992-07-02 | Seiko Epson Corp | 液体噴射ヘッド及びその製造方法 |
| JPH05169654A (ja) * | 1991-12-20 | 1993-07-09 | Seiko Epson Corp | インクジェット記録ヘッド及びその製造方法 |
| JPH05261921A (ja) * | 1992-03-18 | 1993-10-12 | Seiko Epson Corp | インクジェット式印字ヘッド及びその製造方法 |
| JPH05286131A (ja) | 1992-04-15 | 1993-11-02 | Rohm Co Ltd | インクジェットプリントヘッドの製造方法及びインクジェットプリントヘッド |
| JPH05330069A (ja) * | 1992-06-03 | 1993-12-14 | Seiko Epson Corp | インクジェット記録ヘッドの製造方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0943437A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0943437B1 (en) | 2003-02-12 |
| EP0943437A1 (en) | 1999-09-22 |
| DE69811333D1 (de) | 2003-03-20 |
| US6315400B1 (en) | 2001-11-13 |
| DE69811333T2 (de) | 2003-07-10 |
| EP0943437A4 (ja) | 1999-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3414227B2 (ja) | インクジェット式記録ヘッド | |
| WO1999003682A1 (en) | Inkjet recording head, method of manufacturing the same, and inkjet recorder | |
| JP4202467B2 (ja) | アクチュエータ装置及びインクジェット式記録ヘッド並びにインクジェット式記録装置 | |
| JP3725390B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP4117504B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| EP0943437A1 (en) | Ink jet recording head and ink jet recorder | |
| JP4068784B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP2000246888A (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3738804B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3610810B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3603931B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3610811B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP4186084B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3551748B2 (ja) | インクジェット式記録ヘッド | |
| JP2000141644A (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP4021065B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JPH11151815A (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3365485B2 (ja) | インクジェット式記録ヘッド及びその製造方法並びにインクジェット式記録装置 | |
| JP3567970B2 (ja) | インクジェット式記録ヘッド及びその製造方法並びにインクジェット式記録装置 | |
| JP3633811B2 (ja) | インクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JP3374900B2 (ja) | インクジェット式記録ヘッド | |
| JPH11157070A (ja) | インクジェット式記録ヘッド | |
| JP2000062173A (ja) | インクジェット式記録ヘッド及びその製造方法並びにインクジェット式記録装置 | |
| JP3769415B2 (ja) | アクチュエータ装置及びその製造方法並びにインクジェット式記録ヘッド及びインクジェット式記録装置 | |
| JPH11105281A (ja) | アクチュエータ及びインクジェット式記録ヘッド |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1998933911 Country of ref document: EP |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 09242964 Country of ref document: US |
|
| WWP | Wipo information: published in national office |
Ref document number: 1998933911 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1998933911 Country of ref document: EP |