EP0063637B1 - Tête d'enregistrement pour imprimante à jet d'encre avec conduites d'encre cylindriques - Google Patents

Tête d'enregistrement pour imprimante à jet d'encre avec conduites d'encre cylindriques Download PDF

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Publication number
EP0063637B1
EP0063637B1 EP19810108327 EP81108327A EP0063637B1 EP 0063637 B1 EP0063637 B1 EP 0063637B1 EP 19810108327 EP19810108327 EP 19810108327 EP 81108327 A EP81108327 A EP 81108327A EP 0063637 B1 EP0063637 B1 EP 0063637B1
Authority
EP
European Patent Office
Prior art keywords
ink
recording head
channel plate
head
ink channels
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
Application number
EP19810108327
Other languages
German (de)
English (en)
Other versions
EP0063637A3 (en
EP0063637A2 (fr
Inventor
Erich Ing. Kattner
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0063637A2 publication Critical patent/EP0063637A2/fr
Publication of EP0063637A3 publication Critical patent/EP0063637A3/de
Application granted granted Critical
Publication of EP0063637B1 publication Critical patent/EP0063637B1/fr
Expired 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/1429—Structure of print heads with piezoelectric elements of tubular type
    • 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

Definitions

  • the invention relates to a writing head for ink writing devices with cylindrical ink channels running in the writing head and partially enclosed by piezo transducers.
  • the object of the invention is to provide a writing head for ink writing devices of the type specified above, for which the tolerance requirements are reduced, the production of which previously required high amount of manual work can be eliminated, and which can finally be made smaller, at least in its longitudinal dimensions.
  • a write head with which this object is achieved is characterized by the features of claim 1.
  • a major advantage of the proposed arrangement is that the cavity which forms an ink channel consists of several parts which are each assigned to separately producible parts. This makes it possible to machine the head part produced by potting with the ink channels running parallel to one another without the tolerance requirements previously observed. Only the channel plate and the nozzle plate represent precision parts. In a particularly advantageous manner, these can be created with any precision using a galvanoplastic process or a photo-ceramic process.
  • Another advantage is that the drive elements can now be arranged directly at the outlet end of the ink channels in the head part or in the immediate vicinity thereof. This is associated with a significant reduction in the total length of the print head, which in the end results in a desired reduction in the size of a printing unit equipped with such print heads.
  • the fastening element consists of a bracket, the arms of which are designed to be resilient, and which, across the individual parts of the writing head, provide the necessary pressing force for a sealing cohesion of the individual parts.
  • FIG. 1 This shows a print head 1 which contains seven parallel ink channels 2.
  • Each ink channel 2 is assigned a piezo transducer in the form of a piezo tube 3 that surrounds the ink channel.
  • the ink channels 2 are arranged in two rows which are offset from one another.
  • a channel plate 4 directly adjoining the head part 1 has seven ink guide channels 5 corresponding to the number of ink channels, into which the ink channels 2 open on the side facing the head part and which have outlet openings 6 on the other side.
  • the outlet openings 6 are arranged in the row provided for the outlet nozzles. In the exemplary embodiment, they form a row of openings lying one above the other. However, another shape is also possible.
  • the nozzle plate 7 with the nozzle openings 8 is provided as a sealing cover to the outside and to ensure an exact droplet ejection.
  • the nozzle openings 8 correspond to the outlet openings 6 of the channel plate 4 both in their position and in their number.
  • a bracket 9 is used for securing the individual parts, namely the head part 1, the channel plate 4 and the nozzle plate 7, the resilient arms 10 of which, after the individual parts have been joined together, reach over them and are latched in recesses 11 in the head part 1. It is advantageous if the bracket 9 covers most of the outer surface of the nozzle plate 7 and has a corresponding recess 12 only in the area of the outlet openings 8. This results in an increase in the pressure force and thus a better seal between the individual parts of the print head. If required, a sealing film provided with corresponding openings can be inserted between the individual parts of the writing head to improve the seal.
  • the tolerance requirements which are directed to the head part are lower. This can be created, for example, by machine casting.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Claims (5)

1. Tête d'écriture pour des dispositifs d'écriture à l'encre, comprenant des canaux à encre cylindriques, s'étendant dans la tête d'écriture, et entourées, au moins partiellement par des transucteurs piézoélectriques, caractérisée
par une partie formant tête (1), dans laquelle sont disposées les canaux à encre (2) qui s'étendent parallèlement les uns aux autres,
par une plaque à canaux (4) y faisant suite, ayant des canaux (5) pour l'encre, dans lesquels débouchent, d'un côté de la plaque à canaux (4), les canaux d'encre (2) et qui, de l'autre côté, forment des ouvertures de sortie (6),
par une plaque à tuyères (7) ayant des ouvertures formant tuyères (8) associées aux ouvertures de sortie (6) de la plaque à canaux (4) et
par un élément de fixation (9) entourant au moins partiellement la partie formant tête (1), la plaque à canaux (4) et la plaque à buses (7).
2. Tête d'écriture suivant la revendication 1, caractérisée en ce que la partie formant tête (1) avec les canaux à encre (2) et les éléments de commande (3) est une partie en matière plastique fabriquée par le procédé de moulage.
3. Tête d'écriture suivant la revendication 1, caractérisée en ce que la plaque à canaux (4) est une partie fabriquée par galvanoplastie.
4. Tête d'écriture suivant la revendication 1, caractérisée en ce que la plaque à canaux (4) est une partie fabriquée par voie photocéramique.
5. Tête d'écriture selon l'une des revendications 1 à 4, caractérisée en ce que l'élément de fixation (9) est un étrier à prolongements (10) élastiques qui s'étendent au-delà de la plaque à tuyères (7) et de la plaque à canaux (4) et qui peuvent s'enclencher dans des évidements (11) de la partie formant tête (1).
EP19810108327 1981-04-29 1981-10-14 Tête d'enregistrement pour imprimante à jet d'encre avec conduites d'encre cylindriques Expired EP0063637B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813117028 DE3117028A1 (de) 1981-04-29 1981-04-29 Schreibkopf fuer tintenschreibeinrichtungen mit zylinderfoermigen tintenkanaelen
DE3117028 1981-04-29

Publications (3)

Publication Number Publication Date
EP0063637A2 EP0063637A2 (fr) 1982-11-03
EP0063637A3 EP0063637A3 (en) 1983-08-24
EP0063637B1 true EP0063637B1 (fr) 1985-03-13

Family

ID=6131102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810108327 Expired EP0063637B1 (fr) 1981-04-29 1981-10-14 Tête d'enregistrement pour imprimante à jet d'encre avec conduites d'encre cylindriques

Country Status (3)

Country Link
EP (1) EP0063637B1 (fr)
JP (1) JPS57182454A (fr)
DE (1) DE3117028A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3630206A1 (de) * 1985-09-06 1987-03-19 Fuji Electric Co Ltd Tintenstrahldruckkopf

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1182285B (it) * 1984-09-25 1987-10-05 Olivetti & Co Spa Testina di stampa a getto d inchiostro relativo procedimento di fabbricazione ed attrezzo utilizzabile per l attuazione di tale procedimento
US4665409A (en) * 1984-11-29 1987-05-12 Siemens Aktiengesellschaft Write head for ink printer devices
US4680595A (en) * 1985-11-06 1987-07-14 Pitney Bowes Inc. Impulse ink jet print head and method of making same
US4771298A (en) * 1986-09-17 1988-09-13 International Business Machine Corporation Drop-on-demand print head using gasket fan-in
ES2076217T3 (es) * 1988-10-31 1995-11-01 Canon Kk Aparato para la impresion por chorros de liquido.
EP0383019B1 (fr) * 1989-01-13 1997-11-05 Canon Kabushiki Kaisha Tête d'enregistrement à jet d'encre, appareil d'enregistrement à jet d'encre et méthode associée de nettoyage
US5185615A (en) * 1990-04-11 1993-02-09 Canon Kabushiki Kaisha Ink jet recording method and apparatus for recovering ejection at a particular orifice by ejecting ink from adjacent orifices
DE4100730C2 (de) * 1991-01-09 1997-04-03 Francotyp Postalia Gmbh Verfahren für eine Flüssigkeitsstrahl-Druckvorrichtung
JP2833875B2 (ja) * 1991-04-16 1998-12-09 キヤノン株式会社 インクジェットヘッドの製造方法、及びその製造機
DE4336416A1 (de) * 1993-10-19 1995-08-24 Francotyp Postalia Gmbh Face-Shooter-Tintenstrahldruckkopf und Verfahren zu seiner Herstellung
DE4424771C1 (de) 1994-07-05 1995-11-23 Francotyp Postalia Gmbh Tintendruckkopf aus einzelnen Tintendruckmodulen
US6435648B1 (en) * 1996-02-13 2002-08-20 Canon Kabushiki Kaisha Liquid ejection apparatus using air flow to remove mist

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7603784L (sv) * 1975-09-29 1977-03-30 Siemens Ag Anordning for kontaktering av elektriska komponenter for ingjutning i arbetsstycken
DE2543420C3 (de) * 1975-09-29 1980-09-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Piezoelektrisches Antriebselement für Schreibköpfe in Tintenmosaik-Schreibeinrichtungen
DE2728657A1 (de) * 1977-06-24 1979-01-04 Siemens Ag Duesenplatte fuer tintenschreibeinrichtungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3630206A1 (de) * 1985-09-06 1987-03-19 Fuji Electric Co Ltd Tintenstrahldruckkopf

Also Published As

Publication number Publication date
DE3117028A1 (de) 1982-11-18
EP0063637A3 (en) 1983-08-24
JPS57182454A (en) 1982-11-10
EP0063637A2 (fr) 1982-11-03

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