EP0468068B1 - Dispositif pour l'alimentation d'encre dans une tête d'écriture d'encre - Google Patents

Dispositif pour l'alimentation d'encre dans une tête d'écriture d'encre Download PDF

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Publication number
EP0468068B1
EP0468068B1 EP19900114171 EP90114171A EP0468068B1 EP 0468068 B1 EP0468068 B1 EP 0468068B1 EP 19900114171 EP19900114171 EP 19900114171 EP 90114171 A EP90114171 A EP 90114171A EP 0468068 B1 EP0468068 B1 EP 0468068B1
Authority
EP
European Patent Office
Prior art keywords
ink
channels
individual channels
compartment
channel structure
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.)
Expired - Lifetime
Application number
EP19900114171
Other languages
German (de)
English (en)
Other versions
EP0468068A1 (fr
Inventor
Manfred Lehmann
Karl Bühler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to DE59009749T priority Critical patent/DE59009749D1/de
Priority to EP19900114171 priority patent/EP0468068B1/fr
Publication of EP0468068A1 publication Critical patent/EP0468068A1/fr
Application granted granted Critical
Publication of EP0468068B1 publication Critical patent/EP0468068B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17563—Ink filters
    • 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
    • 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
    • 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
    • B41J2/1643—Manufacturing processes thin film formation thin film formation by plating
    • 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
    • B41J2002/14379—Edge 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
    • B41J2002/14403—Structure thereof only for on-demand ink jet heads including a filter

Definitions

  • the invention relates to an arrangement for supplying ink to an ink writing head according to the preamble of patent claim 1.
  • Print heads in ink writing devices essentially have a multiplicity of ink channels which end on the side of the write head facing a recording medium in outlet nozzles and which end at the other end in a common ink chamber. This is connected to an ink reservoir via a supply system.
  • a drive element is assigned to each ink channel, and when actuated individually, a single droplet of ink is ejected.
  • Thermal transducers or piezoceramic transducers are used as drive elements.
  • the supply of ink into the ink chamber and into the individual ink channels is usually carried out capillary or using a slight negative pressure inside the head.
  • the so-called anisotropic etching process is a suitable method for producing such write heads (EP 0 359 417 A2).
  • the individual crystal directions of a substrate body e.g. Silicon, depending on different etching speeds used to form particularly precise contours of different depths.
  • the invention has for its object to ensure filtering of the ink without a separate, i.e. independent filter element must be provided and installed.
  • the ink supply area designed as a channel structure also forms the filter for the ink, that is to say it is an integral part of the writing head, and that the production takes place simultaneously with the formation of the ink channels and the ink chamber of the writing head in one Operation can take place.
  • FIG. 1 shows the sectional view of an ink writing head with an ink supply area according to the invention
  • FIG. 2, FIG. 3 and FIG. 4 each show details of the channel structure according to FIG. 1.
  • the Ink channels 2 and the ink chamber 3 formed, wherein, as described in the introduction, the anisotropic etching process is used.
  • the ink supply area has the channel structure according to the invention, which consists of the individual channels 4 and 5 running in two planes 6 and 7.
  • An ink supply line, not shown here, is connected to the individual channels 4 running in the upper level 6, via which ink is supplied from an ink reservoir, also not shown.
  • This ink reservoir can form a compact unit with the head, so it can be integrated into it; however, it can also be designed as an individual part, for example as an exchangeable ink container which is moved with the head.
  • the individual channels 5 running in the lower level 7 open into the ink chamber 3. This is achieved in that the direction of the individual channels 4 and 5 running in the two levels 6 and 7 is rotated by an angle. In the example, this angle is 90 °.
  • the liquid transport between the individual channels 4 and 5 is ensured by the fact that breakthroughs occur in the areas in which the individual channels of the lower and upper levels intersect. In the usual way, the entire arrangement is closed in a liquid-tight manner by a cover 8, for example made of glass.
  • FIG. 2 shows the course of the individual channels 4 in the upper level 6
  • FIG. 3 shows the course of the individual channels 5 in the lower level 7
  • FIG Individual channels 4 and 5 are carried out with the aid of a line pattern or line grid applied to the substrate body 1 on both sides, which corresponds to the line pattern shown in FIGS. 2 and 3.
  • the grating on one side of the substrate body 1 is rotated by an angle, in the example by an angle of 90 °, with respect to the grating applied on the other side thereof.
  • the channel structure then results in a double-sided etching process.
  • the channel structure according to the invention not only ensures a secure ink connection; Rather, an effective ink filter is also available which, in addition to improved mechanical stability, also has good flow behavior for the ink and which can be produced in a single operation together with the ink channels and the ink chamber.
  • the arrangement according to the invention offers advantages, above all for so-called interchangeable writing heads, since the filter integrated in the head no longer requires special measures when connected to the ink supply system of a writing device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Claims (2)

  1. Dispositif pour l'apport d'encre dans une tête d'écriture à encre, qui comporte une multiplicité de canaux à encre (2) qui se terminent par des ouvertures de sortie, une chambre à encre (3) commune aux canaux à encre (2) et un domaine d'apport d'encre par lequel l'encre parvient dans la chambre à encre (3) depuis un réservoir d'encre, dans lequel les canaux à encre (2) et la chambre à encre (3) sont formés sur un corps de substrat (1) par un processus d'attaque anisotrope, caractérisé en ce que le domaine d'apport d'encre est formé dans le corps de substrat (1) par une structure à canaux (4, 5) située dans deux plans (6, 7), en ce que chaque structure à canaux (4, 5) consiste en une multiplicité de canaux individuels et les canaux individuels (par exemple 4) d'un plan (par exemple 6) sont décalés d'un angle par rapport aux canaux individuels (par exemple 5) de l'autre plan (par exemple 7) et en ce qu'il est prévu au niveau des points de rencontre des canaux individuels (4, 5) des ouvertures (9) qui forment un filtre à encre et par lesquelles se produit en même temps l'apport d'encre dans la chambre à encre (3).
  2. Dispositif selon la revendication 1, caractérisé en ce que les canaux individuels (4, 5) de la structure à canaux sont formés en même temps que la formation des canaux à encre (2) et de la chambre à encre (3) par un processus d'attaque anisotrope bilatéral sur le corps de substrat (1).
EP19900114171 1990-07-24 1990-07-24 Dispositif pour l'alimentation d'encre dans une tête d'écriture d'encre Expired - Lifetime EP0468068B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59009749T DE59009749D1 (de) 1990-07-24 1990-07-24 Anordnung für die Tintenzuführung in einen Tintenschreibkopf.
EP19900114171 EP0468068B1 (fr) 1990-07-24 1990-07-24 Dispositif pour l'alimentation d'encre dans une tête d'écriture d'encre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19900114171 EP0468068B1 (fr) 1990-07-24 1990-07-24 Dispositif pour l'alimentation d'encre dans une tête d'écriture d'encre

Publications (2)

Publication Number Publication Date
EP0468068A1 EP0468068A1 (fr) 1992-01-29
EP0468068B1 true EP0468068B1 (fr) 1995-10-04

Family

ID=8204254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900114171 Expired - Lifetime EP0468068B1 (fr) 1990-07-24 1990-07-24 Dispositif pour l'alimentation d'encre dans une tête d'écriture d'encre

Country Status (2)

Country Link
EP (1) EP0468068B1 (fr)
DE (1) DE59009749D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05177831A (ja) * 1991-12-27 1993-07-20 Rohm Co Ltd インクジェットプリントヘッド及びそれを備える電子機器
US6039437A (en) * 1995-01-31 2000-03-21 Canon Kabushiki Kaisha Ink-jet head and ink-jet printing apparatus incorporating the same
NL1008754C2 (nl) * 1998-03-30 1999-10-01 Stork Digital Imaging Bv Inktdoseerinrichting, alsmede inktstraaldrukkop voorzien van een dergelijke inktdoseerinrichting.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639748A (en) * 1985-09-30 1987-01-27 Xerox Corporation Ink jet printhead with integral ink filter
US4863560A (en) * 1988-08-22 1989-09-05 Xerox Corp Fabrication of silicon structures by single side, multiple step etching process
US4864329A (en) * 1988-09-22 1989-09-05 Xerox Corporation Fluid handling device with filter and fabrication process therefor

Also Published As

Publication number Publication date
DE59009749D1 (de) 1995-11-09
EP0468068A1 (fr) 1992-01-29

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