EP1497134A1 - Raccord hydro-electrique pour tete d'imprimante et imprimante equipee - Google Patents
Raccord hydro-electrique pour tete d'imprimante et imprimante equipeeInfo
- Publication number
- EP1497134A1 EP1497134A1 EP03725308A EP03725308A EP1497134A1 EP 1497134 A1 EP1497134 A1 EP 1497134A1 EP 03725308 A EP03725308 A EP 03725308A EP 03725308 A EP03725308 A EP 03725308A EP 1497134 A1 EP1497134 A1 EP 1497134A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- print head
- connection
- positioning
- hydraulic
- terminations
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 title 2
- 238000010168 coupling process Methods 0.000 title 2
- 238000005859 coupling reaction Methods 0.000 title 2
- 210000001113 umbilicus Anatomy 0.000 claims description 55
- 239000004020 conductor Substances 0.000 claims description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 15
- 238000007639 printing Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000004575 stone Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
-
- 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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
Definitions
- the present invention lies in the field of electrical connections between sources of electrical signals and a print head of a printer, in particular an inkjet printer. It is also located in the field of hydraulic connections between different fluid management tanks and said printer printhead. It relates to a part of the connector which is located at the level of the print head, a part of these connectors which is connected to the sources of electrical signals and to the reservoir respectively- and finally the electrical and hydraulic connectors as a whole. It also relates to an inkjet printer equipped with said fittings.
- a continuous jet printer The typical operation of a continuous jet printer can be described as follows. Electrically conductive ink maintained under pressure in a pressurized chamber of a print head escapes from a calibrated nozzle thus forming an ink jet. Under the action of a periodic stimulation device, the ink jet thus formed breaks at regular time intervals at a single point in space. This forced fragmentation of the ink jet is usually induced at a so-called jet break point. by periodic vibrations of a piezoelectric crystal, placed in the ink contained in the pressurized chamber upstream of the nozzle. From the breaking point, the continuous jet transforms into a train of identical and regularly spaced ink drops.
- charge electrodes In the vicinity of the breaking point is placed a first group of electrodes called “charge electrodes” whose function is to selectively transfer, to each drop of the drop train, a predetermined amount of electric charge. All the drops of the jet then pass through a second arrangement of electrodes called “deflection electrodes” forming an electric field which will modify the trajectory of the charged drops.
- deflection electrodes In a first variant, of so-called continuous deflected jet printers, the amount of charge transferred to the drops of the jet is variable and each drop registers a deflection proportional to the electrical charge which has been previously assigned to it. The point of the print medium reached by a drop is a function of this electric charge. The non-deflected drops are recovered by a gutter forming part of the print head and recycled to an ink circuit.
- FIG. 1 A known embodiment of a deflected continuous jet printer is illustrated in FIG. 1.
- a printer comprises a reservoir 111 containing electrically conductive ink 110 which is distributed by a distribution channel 113 to a drop generator 116.
- the drop generator 116 forms from the pressurized ink contained in the distribution channel 113 an ink jet and splits this jet into a train of drops.
- These drops are selectively charged electrically by means of a charging electrode 120 supplied by a voltage generator 121.
- the charged drops pass through a space between two deflection electrodes 102, 103. Depending on their charge, they are more or less deviated.
- the least or not deviated drops are directed towards a recuperator or an ink gutter 106 while the other deviated drops are directed towards a substrate 127 carried locally by a support 213.
- the successive drops of a burst reaching the substrate 127 can thus be deflected to an extreme low position, an extreme high position and successive intermediate positions. All the drops of the burst form a line of width ⁇ x perpendicular to a direction Y of relative advance of the print head and the substrate.
- the print head is formed by the means 116 for generating and splitting into drops of the ink jet, the charging electrode 120, the deflection electrodes 102, 103, and the gutter 106. This head is generally enclosed in a cowling not shown. The time between the first and the last drop of a burst is very short.
- the substrate has not moved relative to the print head during the time of a burst.
- the bursts are fired at regular space intervals. The combination of the relative movement of the head and the substrate, and the selection of drops of each burst which are directed towards the substrate makes it possible to print any pattern such as that represented at 128 in FIG. 1.
- the printhead of a printer must be hydraulically connected on the one hand to a pressurized tank, and on the other hand to a receptacle receiving in return 1 ' ink not directed towards the substrate.
- the printhead has connections to an ink solvent tank and to a compressed air supply.
- the head must be connected to voltage supply sources, signal sources, so as to receive the voltages and information necessary for the electrical supply of the means for forming the drops, for example a piezoelectric crystal, and charge and deflection electrodes.
- the voltage required for the deflection electrodes can be of the order of several thousand volts. Such values mean that the electrical connection must be particularly well insulated.
- a print head of a printer has one or more electrical connections and one or more hydraulic connections. When mounting or replacing a print head, each of these electrical and hydraulic connections must be connected. It is explained in the patent application EP 0
- Patent application EP 0 805 035 A2 describes a system shown in the figure of this EP application, for connecting an umbilicus 1 and a structure 2 for supporting a print head intended to simplify assembly and disassembly of the navel.
- a rigid cap 3 for housing the printhead is located between the structure 2 for supporting the printhead and the navel 1.
- a threaded end portion 7 of the navel can be easily screwed unscrewed into a threaded opening 9 of the cap 3.
- the cap 3 provided with the navel is mounted on the support 2 by means of screws 5.
- a lock nut 8 mounted on the thread 7 between the navel and the cap 3 makes it possible to block the assembly.
- the present invention aims to simplify the mounting and replacement of the print heads and for this to provide a terminal part of the umbilicus with first means for positioning electrical terminal parts and second means for positioning hydraulic terminal parts, mechanically integral of the terminal part of the umbilicus.
- third linked positioning means mechanically with the navel allow positioning the navel relative to a connection part of the print head.
- the connection part of the print head is provided with fourth positioning means cooperating with the third means for positioning the umbilicus so that when the umbilicus is connected to the connection part of the print head, the hydraulic end parts of the umbilicus, are connected to hydraulic end parts of the print head and that the electrical end parts of the umbilicus are connected to electrical end parts of the print head.
- the umbilicus having an end portion provided with means for positioning the electrical and hydraulic end portions mechanically integral with the end portion of the umbilicus, on the other side the print head provided with a portion connection.
- the connection it suffices to push the end part of the umbilicus towards the connection part of the print head to obtain the connection.
- fixing means distributed partly on the navel and partly on the connection part of the printhead, make it possible to maintain the position of the navel relative to the head printing.
- the invention relates to an ink jet printer comprising a print head having a connection part of the printhead for connecting electrical and hydraulic end parts of the printhead to an umbilicus for connection to hydraulic circuits and to electrical conductors of the printer, the umbilicus being equipped with a terminal end portion, bringing together the ends of hydraulic pipes and the ends of electrical conductors, characterized in that the connection part of the umbilicus comprises: - first positioning means mechanically linked to the connection part of the umbilicus for positioning in the part of connection of the navel, the electrical terminations, - second means of positioning mechanically linked to the connection part of the navel to position in the connection part of the navel, the hydraulic terminations, - third means of mechanical positioning related to the navel, and in that the connection part of the printing head n, is equipped with - a base of a body of the print head, this base uniting terminations of hydraulic conduits of a body of the print head, an opening of which has a determined position on the base, terminations of electrical conduct
- the third and fourth connection means cooperate to position the connection part of the umbilicus relative to the connection means of the print head, electrical endings of the umbilicus positioned in the connection part of the umbilicus by the first positioning means being in said connected position of the navel and the print head in contact with terminations of electrical conductors mechanically positioned relative to the base, and the hydraulic terminations of the navel positioned by the second means positioning of the navel being located in an extension of the hydraulic terminations of the base, a sealed communication between the hydraulic terminations of the navel and those of the conduits of the body of the print head being thus formed.
- first second and third positioning means are mechanically linked to the umbilicus, these means and the electrical and hydraulic terminations that they position connect or disconnect to the connection part of the body of the print head in at the same time as the navel. There are no intermediate positioning parts to mount or disassemble to replace a print head.
- the invention also relates to a print head of an ink jet printer according to the invention in its various embodiments, having a connection part of the print head for connecting electrical terminal parts and of the print head to an umbilicus for connection to hydraulic circuits and to electrical conductors of the printer, characterized in that the connection part of the print head is equipped with:
- this base gathering terminations of hydraulic conduits of a body of the print head of which an opening has a determined position on the base, of the terminations of conductors electric mechanically positioned relative to the base,
- the high voltage of several thousand volts necessary in particular for the deflection electrodes of the ink drops is produced from a low voltage source by electrical circuits housed inside d '' a cover for the print head. This significantly reduces the isolation problems of the umbilicus connection.
- the deflection electrodes have a shape making it possible to maintain, throughout the trajectory of the drops, a reduced and substantially constant inter-electrode spacing.
- the deflection performance is obtained with a voltage significantly reduced compared to the usual supply voltages for equipotential deflection electrodes.
- the problems of electrical insulation are thus further reduced, and the integration of the high voltage supply into the print head is simplified.
- - Figure 1 already described shows the main components of a deviated continuous jet printer
- - Figure 2 is an exploded perspective view showing the terminal connection part of an umbilicus and the connection part of a printer printhead
- - Figure 3 includes parts A, B, and C.
- Part A represents a perspective view seen from the side of an assembly of two electrodes according to the variant embodiment of the invention.
- Part B represents a section of the two electrodes along the line A-A of part A.
- Part C is a perspective view of a split electrode according to the variant embodiment of the invention.
- Figure 2 is an exploded perspective view showing a terminal connection part 1 of an umbilicus and the connection part 3 of a printer printhead.
- the terminal part 1 of the umbilicus comprises in a known manner an envelope 11 housing the terminal parts of the electrical and hydraulic conductors.
- the bell 12 hollow rigid subsequently called bell 12 of the casing 11, receives positioning means 13 and 14 of the electrical end parts, and positioning means 14 of the end parts Hydraulic.
- This bell has a hollow part not visible in Figure 2 equipped with a flat bottom 4 whose center is pierced to let through the hydraulic conduits and electrical conductors contained in the umbilicus. Externally the bell 12 has a lateral peripheral surface 28 parallel to a local axis of the umbilicus.
- the positioning means 14 of the hydraulic end parts consist of a roller 14 made of a non-conductive material, for example plastic.
- This roller 14 has through holes 16 serving in cooperation with fir fittings 24, more commonly called corrugated housing and positioning fittings at the hydraulic terminations which are constituted by these fittings 24.
- the fir fittings 24 are themselves constituted by an axial part 29 notched outwardly terminated by a washer 7 pierced flat in one piece with the axial part 29.
- the washer 7 is thus mechanically tightly connected to the axial part 29 of the connector 24.
- the roller 14 is provided with a cavity 17 .
- the positioning means 13 and 14 of the electrical terminal parts are constituted by a connector 13 itself constituted by an insulating part 18 on which are fixed conductive blades 19.
- the cavity 17 of the roller 14 has a geometric shape allowing to house and position the connector 13 relative to the roller 14.
- the insulating part 18 of the connector 13 has positioning parts 20, 22 which cooperate with positioning parts 21, 23 respectively of the roller 14, so that the position of the conductive strips 19 relative to the roller 14 is perfectly determined.
- the positioning parts 20-23 consist of projecting parts 20, 22 of the connector 13 and hollow parts 21, 23 of the roller 14.
- connection part of the navel is carried out as follows.
- the hydraulic ends of the umbilicus are each passed through a through hole 16. They are then clamped on the axial parts 29 of the fir connectors 24.
- the fir connectors 24 are then pressed in tightening each into a through hole 16.
- the electrical end parts of the umbilicus are fixed on the blades 19 of the connector 13.
- the connector 13 is housed and positioned in the cavity 17, the protruding parts of the connector 13, or of the roller 14 being housed in the hollow parts of the roller 14 or connector 13 respectively.
- the roller 14 is then inserted into the bell 12 until it comes into abutment on the inner part of the bottom 4, not visible in FIG. 2, of the bell 12.
- the roller is clamped in the bell 12 In this position the connector 13 is also in abutment on the inner part of the bottom 4 of the bell 12, which positions it in an axial position.
- the angular positioning of the roller and therefore of the connector 13 relative to a central axis of the umbilicus at the level of the bell 12 can be ensured by any known means. They may be corresponding external shapes, for example ovalized from the bell 12 and the roller 14 such as the roller can only take an angular position to be introduced into the bell, pins and positioning holes on the bell or roller.
- a pin 15 is positioned in a through hole 25 of the bell, whose axis is perpendicular to the local axis of the umbilicus and in a blind hole not shown in the roller 14 dug at from an outer peripheral surface 27 of said roller.
- the planar surface of the roller 14 opposite the planar surface of this roller in contact with the bottom 4 of the bell 12 is flush with the edge of the lateral surface 28 of the bell 12, projecting very slightly from this bell. This means that the thickness of the roller 14 is very slightly greater than the height of the interior edge of the bell 12 formed by the interior surface corresponding to the exterior edge 28.
- the first positioning means for positioning the electrical terminations in the umbilicus are constituted by the bell 12, the bottom 4 of which constitutes a stop positioning the connector 13 in the local axial direction of the navel, the roller 14, its cavity 17 and the positioning means 20-23 of the connector 13 relative to the roller 14, the pin 15, the through hole 25 of the bell 12 and a blind hole in the roller 14.
- the second means for positioning the hydraulic terminations in the connection portion of the umbilicus are constituted by the bell 12, the bottom 4 of which constitutes a stop positioning the roller 14 in the local axial direction of the umbilicus, the roller 14 provided with its holes 16 housing and positioning the hydraulic connections 24, the pin 15, the through hole 25 of the bell 12 and a blind hole in the roller 14.
- first and second positioning means are mechanically integral with the umbilicus so that when mounting or dismounting a print head, it suffices to move the umbilicus in an axial translational movement to disconnect or connect the navel.
- connection part 3 of the print head will now be described.
- a base formed by a flat surface 31 and means for positioning and holding the navel.
- a cover (or envelope) 42 has been shown transparent to reveal a body 34 of the print head and a printed circuit 38 which will be described in more detail below.
- these positioning and holding means are constituted by a peripheral surface 48 perpendicular to the flat surface of base 31.
- the base 31 and the peripheral surface 48 define
- Terminations 36 of the hydraulic conduits of the part 3 for connection of the print head open onto the base 31.
- the terminations 36 of hydraulic conduits are arranged on the base 31 so that the hydraulic terminations 36 are in the extension of the axial parts 29 of the connectors 24 when the navel is connected to the part 3 for connection of the print head.
- a printed circuit board 38 has its plane placed perpendicular to the base surface 31.
- An end part 33 of this plate carrying electrical terminations 39 opens into the hollow part 32.
- the plate 38 is positioned so that the electrical terminations 39 are in electrical contact with the electrical terminations 19 of the connector 13 when the navel is connected to the connection part 3 of the print head.
- connection assembly The operation of the connection assembly is as follows.
- the external surface 28 of the bell 12 has substantially the same height as that of the internal peripheral surface 48 of the hollow part 32.
- the external shape of the surface 28 is such that it corresponds to the internal shape of the internal peripheral surface 48 of the hollow part 32.
- the bell 12 can penetrate the hollow 32 in an adjusted manner, until the end washer 7 of the fittings 24 comes into contact with the bottom 31 of the hollow part 32.
- the axial parts 29 of the fittings 24 are then in the extension of the axes of the hydraulic conduits of the print head. .
- the contacts 19 of the connector 13 come into contact with the electrical terminations 39 of the printed circuit 38.
- the bell 12 and the inner surface 48 of the hollow portion 32 are cylindrical in revolution.
- connection part 3 of the printhead is connected to the umbilicus by pressing into the empty part of the bell 12, until the base 31 abuts against the surface of the roller 14 opposite to that which is in abutment on the bottom 4 of the bell 12.
- the means for fixing and tightening the terminal connection part 1 of the umbilicus on part 3 of connection of the print head include a flange 2 bearing on a shoulder formed by the outer part of the bottom 4 of the bell 12.
- the flange 2 is screwed by screws not shown on.
- a seal 6 is preferably introduced between the flange 2 and the collar 5 to keep the internal part of the umbilicus connection dust-free. Because the roller 14 is flush with slightly projecting outside the bell 12, the clamping of the flange 2 on the flange 5 ensures good tightening of the hydraulic seals 49 sealing.
- the printed circuit 33 comprises elements mounted on the surface constituting together in a known manner - a high voltage source from a low voltage source received by one of the contacts 39. These circuits in themselves known have been represented by a rectangle 43 on the printed circuit 33.
- the deflection electrodes have a particular embodiment. As explained above, this particular shape allows deflection performance to be obtained with a voltage significantly reduced compared to the usual supply voltages for equipotential deflection electrodes.
- FIG. 3 which comprises the parts A, B, C.
- the deflection electrodes 102, 103 each have, with respect to a direction of flow of an ink jet from the printer, only the axis of which is represented by an axis line, an upstream part 115, and a part downstream 116.
- a so-called active surface 211, 210 of each deflection electrode 102, 103 respectively is a surface of said electrode 102 or 103 which is opposite the other electrode.
- the axis of the ink jet passes in the most upstream part of said first 102 and second 103 electrodes between the two active surfaces 211, 210 of these first 102 and second 103 electrodes.
- the active surface 211 of the first electrode 102 has a first concave longitudinal curvature whose local radius of longitudinal curvature is located in a plane formed by the axis of the ink jet and a direction of deflection of the drops.
- the active surface 210 of the second electrode 103 has a first convex longitudinal curvature.
- the first electrode has in its downstream portion 116 a slot 112, the most upstream point 139 of which is located in the vicinity of the intersection of the active surface 211 of the first electrode 102 with the axis of the ink jet.
- the two electrodes 102, 103 are of substantially equal heights.
- a plane tangent to the active surfaces 211, 210 of the electrodes 102 and 103 respectively, in their most upstream part is parallel to the axis of a jet or intersects this axis at a slight angle.
- the concave longitudinal curvature of the active surface 211 of the first electrode 102 is substantially opposite to the convex longitudinal curvature of the active surface 210 of the second electrode 103 so that the distance between the active surfaces 211 and 210 of the first and second electrodes is substantially constant.
- the active surface 210 of the electrode 103 has a convex longitudinal curvature such that this surface is in a downstream part, substantially parallel to a path, not shown, of the most deviated drops. In a known way, a trajectory can be visualized by stroboscopic lighting of the drops.
- the spacing e separating the active surfaces 210 and 211 being substantially constant over the entire height of the electrodes 102, 103 the electrostatic deflection field between these electrodes is also substantially constant throughout the inter-electrode space.
- the value of the spacing e is less than 3.5 mm, - preferably - less than 2 mm.
- a recess 112 which in the example shown has the form of a slot 112, visible in part B and C of FIG. 3, is made in a downstream part of the electrode 102.
- the width of the recess 112 is greater than the diameter of the ink drops.
- the width of the recess 112 is advantageously limited so that the drop in the value of the field Ed existing in the downstream part of the electrodes 102, 103 does not exceed 15% of that of the optimal field created in its part upstream.
- the slot 112 is in the form of a groove formed from the active surface 211 of the first electrode 102. The depth of this groove increases in the downstream direction of the electrode 102 as shown by a dotted line 123 representing the bottom of said groove 112. This bottom is substantially parallel to the axis of the jet
- the axis of the jet ' ' is substantially parallel to the bottom 123 of the groove 112.
- the depth of the groove 112 becomes greater than the local width of the electrode so that the edges of the groove 112 form two tongues 124, 125 between which is housed a gutter 106.
- the 'electrode is in the form of a metal sheet the slot is immediately through.
- the gutter 106 is placed upstream of the most downstream part 122 of the electrode 102.
- An opening of the gutter 106 intersects the axis of the ink jet.
- the longitudinal curvature of the electrodes is preferably constant, so that the active surfaces 211, 210 of the electrodes 102, 103 are formed substantially by cylindrical surface portions with an axis perpendicular to the axis of the jet.
- the electrodes 102 and 103 are preferably made of a stainless metal. The operation is as follows.
- the electric field Ed arising from a potential difference Vd between the two electrodes 102, 103, deflects the ink drops in proportion to their electric charge along predefined paths.
- the trajectory followed by the drops carrying a maximum charge Qmax is close to and substantially parallel to the active surface 210 of the second electrode 103, in the downstream part of this active surface. It is the trajectory of the most deviated drops.
- the active surface of the second electrode 103 is calculated so that the probability of encountering the trajectory of the most deviated drops, with the second electrode 103 is almost zero, although this trajectory is parallel and close to the active surface 210 of the second electrode 103 at least in the downstream part of this surface.
- the path traveled by the drops provided with the minimum charge Qmin making it possible to avoid the recovery gutter 106, and therefore directed towards the printing substrate, is on the contrary rather close to the bottom 123 of the slot 112.
- the drops carrying charges between the values Qmax and Qmin follow intermediate paths.
- the drops which are not electrically charged or little charged, that is to say having a charge less than Qmin follow an almost rectilinear trajectory coincident with the axis of the jet and are therefore intercepted by the opening of the recovery gutter 106.
- These drops recovered by the gutter 106 are in a known manner recycled.
- the slot 112 is as explained above such that the least deviated drops and in particular those whose charge is less than Qmin pass through this slot 112. It follows that a part 139 the most upstream of a contour 138 of this slot 112 is located at a place close to the point of intersection of the axis of the jet with the first electrode 102. Because the drops whose charge is less than Qmin and the least charged drops among those whose charge is between Qmin and Qmax pass through the slot 112 of the electrode 102, the dispersion of the drops can be preserved despite a spacing e between the electrodes 102 and 103 reduced compared to the electrodes of the prior art.
- the weakness of the spacing e allows the use of an inter-electrode voltage value Vd of the order of 3 kV instead of the 8 to 10 kV usually used in conventional deflection electrode devices. It is then particularly advantageous to make the potential difference Vd by bringing the electrode 102 to the reference potential of the ink, usually the ground potential of the printer. Under these conditions, unlike the prior art where this potential is a potential opposite to that of the electrode 103 -, - by -relation to the potential of the ink, it becomes possible to bring together or even to integrate, as shown Figure 3 part A, the recovery gutter 106 and the electrode 102 without risk of electrical breakdown between these two elements and without altering the field Ed between the two electrodes. This reduces the size of the print head.
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0203605 | 2002-03-22 | ||
| FR0203605A FR2837421B1 (fr) | 2002-03-22 | 2002-03-22 | Raccord hydro-electrique pour tete d'imprimante et imprimante equipee |
| PCT/FR2003/000878 WO2003080346A1 (fr) | 2002-03-22 | 2003-03-19 | Raccord hydro-electrique pour tete d'imprimante et imprimante equipee |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1497134A1 true EP1497134A1 (fr) | 2005-01-19 |
| EP1497134B1 EP1497134B1 (fr) | 2005-11-02 |
Family
ID=27799179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03725308A Expired - Lifetime EP1497134B1 (fr) | 2002-03-22 | 2003-03-19 | Raccord hydro-electrique pour tete d'imprimante et imprimante equipee |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7195331B2 (fr) |
| EP (1) | EP1497134B1 (fr) |
| JP (1) | JP2005520717A (fr) |
| CN (1) | CN1642744A (fr) |
| AU (1) | AU2003227850A1 (fr) |
| DE (1) | DE60302142T2 (fr) |
| ES (1) | ES2251686T3 (fr) |
| FR (1) | FR2837421B1 (fr) |
| WO (1) | WO2003080346A1 (fr) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941737B (zh) * | 2007-10-12 | 2014-12-10 | 录象射流技术公司 | 喷墨模组 |
| GB0802349D0 (en) * | 2008-02-08 | 2008-03-12 | Domino Printing Sciences Plc | Improvements in or relatign to continuous inkjet printers |
| FR2956061B1 (fr) * | 2010-02-11 | 2012-12-21 | Markem Imaje | Imprimante a jet d'encre industrielle a communication numerique |
| JP5839159B2 (ja) * | 2011-05-20 | 2016-01-06 | セイコーエプソン株式会社 | 液体噴射ヘッド及び液体噴射装置 |
| CN106457825B (zh) | 2014-03-31 | 2018-12-14 | 录象射流技术公司 | 二元阵列喷墨打印头 |
| WO2015187983A2 (fr) | 2014-06-05 | 2015-12-10 | Videojet Technologies Inc. | Tête d'impression à jet d'encre continu avec réglage du zéro pour électrode de charge intégrée |
| WO2015187926A1 (fr) | 2014-06-05 | 2015-12-10 | Videojet Technologies Inc. | Agencement de capteur d'accumulation d'encre |
| BR112016028294B1 (pt) | 2014-06-05 | 2022-11-08 | Videojet Technologies Inc | Módulo de filtro, e, impressora de jato de tinta contínuo |
| FR3034345B1 (fr) | 2015-04-02 | 2019-08-23 | Dover Europe Sarl | Connecteur configurable |
| US10894419B2 (en) | 2017-03-14 | 2021-01-19 | Illinois Tool Works Inc. | Quick connect assembly for fluid and electrical connections |
| US12138933B2 (en) | 2019-01-04 | 2024-11-12 | Videojet Technologies Inc. | Print head connector assembly |
| JP7326051B2 (ja) * | 2019-07-10 | 2023-08-15 | 株式会社日立産機システム | インクジェット記録装置およびインクジェット記録装置の制御方法 |
| CN112706522B (zh) * | 2020-12-25 | 2022-04-08 | 镭德杰标识科技武汉有限公司 | 一种打印头、脐带导管及打印组件 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4339763A (en) * | 1970-06-29 | 1982-07-13 | System Industries, Inc. | Apparatus for recording with writing fluids and drop projection means therefor |
| US3965376A (en) * | 1973-02-07 | 1976-06-22 | Gould Inc. | Pulsed droplet ejecting system |
| US3929071A (en) * | 1974-12-23 | 1975-12-30 | Ibm | Ink recirculating system for ink jet printing apparatus |
| US4074284A (en) * | 1976-06-07 | 1978-02-14 | Silonics, Inc. | Ink supply system and print head |
| US4338613A (en) * | 1980-12-19 | 1982-07-06 | Pitney Bowes Inc. | Ink drop deflector |
| JPS6040258A (ja) * | 1983-08-15 | 1985-03-02 | Ricoh Co Ltd | インクジエツト印写装置 |
| US4959667A (en) * | 1989-02-14 | 1990-09-25 | Hewlett-Packard Company | Refillable ink bag |
| US5623292A (en) * | 1993-12-17 | 1997-04-22 | Videojet Systems International, Inc. | Temperature controller for ink jet printing |
| EP0764538B1 (fr) * | 1995-09-19 | 2000-07-19 | SCITEX DIGITAL PRINTING, Inc. | Collecteur de fluide pour tête d'impression à jet d'encre |
| US5796419A (en) * | 1995-12-04 | 1998-08-18 | Hewlett-Packard Company | Self-sealing fluid interconnect |
| US5847734A (en) * | 1995-12-04 | 1998-12-08 | Pawlowski, Jr.; Norman E. | Air purge system for an ink-jet printer |
| JP3019768B2 (ja) * | 1995-12-28 | 2000-03-13 | 富士ゼロックス株式会社 | インクジェットプリンタおよびインクジェット記録ユニット |
| DE69705089T2 (de) | 1996-04-30 | 2001-09-20 | Scitex Digital Printing, Inc. | Anbring- und abnehmbare Verbindungskabelplattform für einen kontinuierlich arbeitenden Tintenstrahldruckkopf |
| JPH1086395A (ja) * | 1996-09-10 | 1998-04-07 | Mutoh Ind Ltd | インクジェットプリンタ |
| JPH1086385A (ja) | 1996-09-19 | 1998-04-07 | Hitachi Koki Co Ltd | インクジェットプリンタ |
| EP0885730A3 (fr) * | 1997-06-18 | 1999-12-15 | Hewlett-Packard Company | Méthode et mécanisme d'interconnexion fluidique pour imprimante par jet d'encre |
-
2002
- 2002-03-22 FR FR0203605A patent/FR2837421B1/fr not_active Expired - Fee Related
-
2003
- 2003-03-19 US US10/508,348 patent/US7195331B2/en not_active Expired - Fee Related
- 2003-03-19 ES ES03725308T patent/ES2251686T3/es not_active Expired - Lifetime
- 2003-03-19 JP JP2003578150A patent/JP2005520717A/ja active Pending
- 2003-03-19 CN CN03806612.2A patent/CN1642744A/zh active Pending
- 2003-03-19 EP EP03725308A patent/EP1497134B1/fr not_active Expired - Lifetime
- 2003-03-19 AU AU2003227850A patent/AU2003227850A1/en not_active Abandoned
- 2003-03-19 WO PCT/FR2003/000878 patent/WO2003080346A1/fr not_active Ceased
- 2003-03-19 DE DE60302142T patent/DE60302142T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03080346A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2837421B1 (fr) | 2004-07-02 |
| JP2005520717A (ja) | 2005-07-14 |
| DE60302142T2 (de) | 2006-07-06 |
| US7195331B2 (en) | 2007-03-27 |
| WO2003080346A1 (fr) | 2003-10-02 |
| AU2003227850A1 (en) | 2003-10-08 |
| EP1497134B1 (fr) | 2005-11-02 |
| ES2251686T3 (es) | 2006-05-01 |
| DE60302142D1 (de) | 2005-12-08 |
| US20050110836A1 (en) | 2005-05-26 |
| CN1642744A (zh) | 2005-07-20 |
| FR2837421A1 (fr) | 2003-09-26 |
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