EP0153436B1 - Imprimante à projection d'encre - Google Patents

Imprimante à projection d'encre Download PDF

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Publication number
EP0153436B1
EP0153436B1 EP84102986A EP84102986A EP0153436B1 EP 0153436 B1 EP0153436 B1 EP 0153436B1 EP 84102986 A EP84102986 A EP 84102986A EP 84102986 A EP84102986 A EP 84102986A EP 0153436 B1 EP0153436 B1 EP 0153436B1
Authority
EP
European Patent Office
Prior art keywords
electrodes
ink jet
jet printer
ink
film
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
EP84102986A
Other languages
German (de)
English (en)
Other versions
EP0153436A3 (en
EP0153436A2 (fr
Inventor
Otto Eblen
Gerhard Glöckler
Franz Dr. Kohler
Norbert Meinusch
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.)
Codi-Jet Markierungs Systeme GmbH
Original Assignee
CODI-JET MARKIERUNGS SYSTEME
Codi-Jet Markierungs Systeme GmbH
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 CODI-JET MARKIERUNGS SYSTEME, Codi-Jet Markierungs Systeme GmbH filed Critical CODI-JET MARKIERUNGS SYSTEME
Priority to AT84102986T priority Critical patent/ATE51583T1/de
Publication of EP0153436A2 publication Critical patent/EP0153436A2/fr
Publication of EP0153436A3 publication Critical patent/EP0153436A3/de
Application granted granted Critical
Publication of EP0153436B1 publication Critical patent/EP0153436B1/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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
    • 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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
    • B41J2/085—Charge means, e.g. electrodes
    • 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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
    • B41J2/09—Deflection means
    • 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
    • B41J2202/22—Manufacturing print heads

Definitions

  • the invention relates to an inkjet printer with a device for generating a sequence of ink drops which fly through an arrangement of electrodes for charging, detecting and deflecting the ink drops, the detection electrode being insulated on both sides by a shield both from the charging electrode and from the deflecting electrode, wherein all electrodes with their mutually facing surfaces are mirror images of each other.
  • an electromagnetic device provided with appropriate means is required. With the device assigned to a spray body, individual drops are charged, detected and deflected in correspondingly generated electrical fields, as a result of which a text field is created on a correspondingly assigned writing point.
  • the electronic means which are arranged relatively close to one another, can smear and clog due to the relatively aggressive and chemical reactions leading to ink reactions and thereby cause an electrical short circuit. Such defects often make the inkjet printer inoperable or completely unusable.
  • the known devices have a relatively complex, constructive structure and are not suitable, or only with great technical effort, for the arrangement of a plurality of closely adjacent spray bodies, as are required, for example, for inkjet printers in order to achieve seamless graphic representations.
  • Electrodes on the other hand, are used today, as described, for example, in European patent application 0108589 (Art. 54 (3) EPC) and their shape is created by removing unnecessary, electrically conductive lamination of metal-clad elements. There, too, the individual electrodes are shielded from one another, but there is no protection against the ink jet.
  • the object of the present invention is to create electrode arrangements consisting of structural units which are as space-saving as possible and to shield these electrodes not only against one another but also against the ink jet passing through them.
  • the shape of the electrodes is created by removing unnecessary, electrically conductive lamination of metallically clad elements, and that a film which is resistant to organic or inorganic media is applied to the side of the electrodes facing the ink drops.
  • the particular advantage of the present invention with regard to the method is that, using the circuit board manufacturing technology known per se, the means for producing the charged, detected and deflected ink drops can be produced economically and with optimum electrical properties. Another advantage is that due to the plate-like means - compared to the previously known and block-like means - a much narrower and smaller design is achieved. A further major advantage is also seen in the fact that in a sandwich construction of the two carrier elements comprising the ink drop deflecting means, several spraying bodies can be arranged at a small distance from one another, and as a result seamless, graphic representations can be achieved without any further technical outlay.
  • FIG. 1 shows a perspective view of an arrangement, designated as a whole by 50, with means for charging, detecting and deflecting ink drops in an inkjet printer.
  • the arrangement 50 comprises a first assembly 25 with the means for charging and detection and a second assembly 45 with the means for deflecting the ink drops.
  • You can also see in 1 shows a schematically illustrated spray body 60, from which the arrangement 50 is supplied with a number of ink drops, shown in simplified form by a line 65.
  • the ink drops fly through the first structural unit 25, which is essentially composed of two carrier elements 5 and 10, which are spaced apart by a spacer 15, and the second assembly 25, which is essentially composed of two carrier elements 30 and 40, which are spaced apart by a spacer 35 Unit 45.
  • Fig. 2 shows a sectional view, without the two spacers 15 and 35, a portion of the arrangement 50 and you can see the support member 5 of the first assembly 25 and the support member 40 of the second assembly 45, which in Fig. 4 in section along the line IV -IV is shown in Fig. 2.
  • the second structural unit 45 is shown in a front view according to arrow direction A in FIG.
  • first structural unit 25 The details of the first structural unit 25 and the details of the second structural unit 45 are described in more detail below with reference to FIGS. 5 to 8.
  • FIG. 5 shows the first carrier element 5 shown in view, which is formed from a polyimide substrate provided with a metal lamination.
  • the means for charging and detecting the ink drops are formed on one surface side 5 'in the desired shape, 8 being a charging electrode and 7 being a detection electrode.
  • the detection electrode 7 is preferably surrounded by a shield 6 formed from the lamination and is thereby insulated on one side from the charging electrode 8 and on the other side from a deflection electrode 41 (FIG. 2) of the second structural unit 45.
  • the elements 6, 7 and 8 are connected to correspondingly designed and mutually arranged conductor tracks 6 ', 7' and 8 'with an electrical connection point 1, 2, 3 and 4.
  • FIG. 7 shows the other surface side of the first carrier element 5, which is also provided with a metal lamination and is not designated in any more detail, in which a shield 9 is provided by removing lamination that is not required.
  • the outer shape of the shield 9 comprises the means 6 to 8 provided on the other side (FIG. 5).
  • the shield 9 is also fed to the electrical connections 2, 5 and 4 by means of two conductor tracks 9 'and 9 "formed from the lamination .
  • the second carrier element 10 is shown, which is also formed from a metal-clad polyimide substrate.
  • the means 11, 11 '; 12, 12 'and 13, 13' and on the other, unspecified surface side is one of the means 11, 11 '; 12, 12 'and 13, 13' are provided with a correspondingly designed shield 14.
  • the shield 14 is connected to conductor connections 14 ', 14 "to electrical connections 2' and 4 '.
  • FIGS. 2 and 5 to 8 show the electrically conductive and insulating means 6, 6 '; 7, 7 '; 8, 8 '; 9, 9 ', 9 "; 11, 11'; 12, 12 '; 13, 13' and 14, 14 ', 14" shown hatched.
  • a film which is resistant to organic or inorganic media but in particular by applying a ketone liquid, preferably transparent film 5 ", 10" to the two carrier elements 5 and 10 of the first structural unit 25, the thickness of the Area on the respective surface of the individual carrier elements 5 and 10 provided electrically conductive means isolated from each other.
  • the individual carrier element 5, 10 can be designed as a hermetically sealed unit.
  • the half of the second structural unit 45 shown in a sectional view in FIG. 2 shows the carrier element 40 formed from a substrate 40 ′′, which is provided on one surface side 40 'with a metal-clad polyimide film 42 Deflection electrode 41 formed in the field section and the conductor track 41 'formed as a flag.
  • the film 42 has the outer shape of the carrier element surface 40' in the lower region and is somewhat wider on both sides than the conductor path 41 'in the upper region Film 42 is also a transparent, the deflection electrode 41 and the conductor track 41 'electrically insulating polyimide film 42' applied, which essentially has the outer shape of the first film 42.
  • First carrier element 30 of second structural unit 45 is designed analogously to carrier element 40 described above.
  • the arrangement 50 which essentially consists of the two structural units 25 and 45, forms a unit, as shown in FIG. 1, and can be fastened to a carrier element (not shown) with relatively simple means.
  • the two charging electrodes 8, 13 and detection electrodes 7, 12 of the first structural unit 25 and the deflection electrodes 41, 31 of the second are in the assembled state Unit 45 arranged in mirror image to each other.
  • the second assembly 45 is offset in height from the first assembly 25 such that the ink drop jet 65 emitted by the spray body 60 flies through the two deflection electrodes 31, 41 arranged in mirror image to one another approximately in the central region and is deflected there.
  • the two carrier elements 5, 10 and the spacer 15 are in the assembled state by means of plated-through electrical connection points 1, 1 '; 2, 2 '; 3, 3 'and 4, 4' operatively connected to one another, with the individual connection points, as shown schematically in FIG. 2, correspondingly being supplied with electrical lines 16, 17, 17 'and 18.
  • FIG. 9 schematically shows a device 100 formed from a plurality of individual arrangements described above, which comprises a plurality of injection bodies 60 to 60 " , a plurality of first structural units 25 to 25 " and a plurality of second structural units 46 to 46 n . From the spray bodies 60 to 60 n , ink drops represented by lines 65 to 65 " are charged and detected in the respective first structural unit and deflected in the respective second structural unit onto an associated award carrier 90.
  • the carrier elements which are not described in any more detail 30 to 30 n and 40 to 40 "of the second structural units 46 to 46 n are double-sided, metal-clad and are provided on each side, oriented parallel to the trajectory of the ink drops, with conductor tracks, not shown and not shown. These conductor tracks are designed analogously to the conductor tracks 31 ', 41' of the second structural unit 45.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Claims (6)

1. Imprimante à jet d'encre avec un dispositif (60) pour produire une série de gouttes d'encre, qui traversent un ensemble d'électrodes (8, 13; 7, 12; 13, 41) destinées à charger, détecter et détourner les gouttes d'encre, l'électrode de détection (7, 12) étant isolée des deux côtés par un écran (6, 11) aussi bien vis-à-vis de l'électrode de charge (8, 19) qu'également vis-à-vis de l'électrode de déviation (31, 41), toutes les électrodes (8, 13; 7, 12; 13, 41) se faisant face avec leurs surfaces tournées l'une vers l'autre, en position inversée, caractérisée en ce que la. conformation des électrodes est réalisée en écartant le placage conducteur électrique, non nécessaire fait d'éléments métalliques doublés (5, 10; 32, 42) et en ce que sur le côté des électrodes (8, 13; 7, 12; 31, 41) tourné vers les gouttes de jet d'encre est placée une feuille (5", 10"; 32', 42') résistante aux agents organiques ou anorganiques.
2. Imprimante à jet d'encre selon la revendication 1, caractérisée en ce que, les électrodes de charge et de détection (8, 13; 7, 12) ainsi que les éléments (5, 10) supportant leurs écrans (6, 11) portent sur leur côté opposé à ces électrodes un écran (9, 14) également formé d'un placage métallique.
3. Imprimante à jet d'encre selon la revendication 2, caractérisée en ce que l'écran (6, 11) et l'écran (9, 14) sont connectés aux raccords électriques communs (2, 4 ou 2', 4').
4. Imprimante à jet d'encre selon l'une quelconque des revendications 1 à 3, caractérisée en ce que, également, le côté éloiglJé des gouttes d'encre des éléments (5, 10) supportant les électrodes de charge et de détection (8, 13; 7, 12), ainsi que leur écran (6, 11), est recouvert d'une feuille (5", 10"; 32', 42').
5. Imprimante à jet d'encre selon au moins l'une quelconque des revendications 1 à 4, caractérisée en ce que la feuille (5", 10"; 32', 42') est composée de matériau résistant aux cétones.
6. Imprimante à jet d'encre selon la revendication 5, caractérisée en ce que la feuille est une feuille de polyimide.
EP84102986A 1984-02-27 1984-03-19 Imprimante à projection d'encre Expired - Lifetime EP0153436B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102986T ATE51583T1 (de) 1984-02-27 1984-03-19 Tintenstrahldrucker.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH939/84 1984-02-27
CH93984 1984-02-27

Publications (3)

Publication Number Publication Date
EP0153436A2 EP0153436A2 (fr) 1985-09-04
EP0153436A3 EP0153436A3 (en) 1986-03-26
EP0153436B1 true EP0153436B1 (fr) 1990-04-04

Family

ID=4198693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102986A Expired - Lifetime EP0153436B1 (fr) 1984-02-27 1984-03-19 Imprimante à projection d'encre

Country Status (5)

Country Link
US (1) US4620195A (fr)
EP (1) EP0153436B1 (fr)
AT (1) ATE51583T1 (fr)
BE (1) BE901198A (fr)
DE (1) DE3481833D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2676023B1 (fr) * 1991-05-03 1993-07-23 Imaje Tete de deflexion multijet modulaire et procede de fabrication.
US5475411A (en) * 1992-05-29 1995-12-12 Scitex Digital Printing, Inc. Method of fabricating a catcher/charge plate assembly
DE69410852T2 (de) * 1993-03-01 1998-10-08 Scitex Digital Printing Inc Passivierungsschicht für Ladungselektroden auf Basis von Keramik
US5754206A (en) * 1996-02-23 1998-05-19 Scitex Digital Printing, Inc. Low stress droplet generator mount assembly
GB9626686D0 (en) * 1996-12-23 1997-02-12 Domino Printing Sciences Plc Continuous inkjet printer
KR100209515B1 (ko) * 1997-02-05 1999-07-15 윤종용 자성잉크를 이용한 잉크젯 프린터의 분사 장치 및 방법
FR2763870B1 (fr) * 1997-06-03 1999-08-20 Imaje Sa Systeme de commande de projection de liquide electriquement conducteur
GB2337485B (en) 1998-05-20 2000-06-14 Linx Printing Tech Ink jet printer and deflector plate therefor
DE69910340T2 (de) * 1998-12-14 2004-07-01 Scitex Digital Printing, Inc., Dayton Monolithisches Tintenstrahldruckchassis
US6402299B1 (en) 1999-10-22 2002-06-11 Lexmark International, Inc. Tape automated bonding circuit for use with an ink jet cartridge assembly in an ink jet printer
JP3697228B2 (ja) * 2002-07-08 2005-09-21 キヤノン株式会社 記録装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237431A (en) * 1975-09-19 1977-03-23 Hitachi Ltd Ink sensor for ink jet recording device
US4194211A (en) * 1978-06-19 1980-03-18 International Business Machines Corporation Charge electrode array for multi-nozzle ink jet array
US4346389A (en) * 1979-10-11 1982-08-24 Ricoh Co., Ltd. Multiple charge electrode device for liquid jet printer
US4338612A (en) * 1979-10-11 1982-07-06 Ricoh Co., Ltd. Multiple deflection plate device for liquid jet printer or the like
JPS5689569A (en) * 1979-12-19 1981-07-20 Canon Inc Ink jet recording head
DK499383A (da) * 1982-11-05 1984-05-06 Willett Int Ltd Ladeelektrode til en blaekstraaleskriver

Also Published As

Publication number Publication date
BE901198A (fr) 1985-03-29
US4620195A (en) 1986-10-28
EP0153436A3 (en) 1986-03-26
DE3481833D1 (de) 1990-05-10
ATE51583T1 (de) 1990-04-15
EP0153436A2 (fr) 1985-09-04

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