EP0063637A2 - Ink jet recording head with cylindrical ink channels - Google Patents

Ink jet recording head with cylindrical ink channels Download PDF

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Publication number
EP0063637A2
EP0063637A2 EP81108327A EP81108327A EP0063637A2 EP 0063637 A2 EP0063637 A2 EP 0063637A2 EP 81108327 A EP81108327 A EP 81108327A EP 81108327 A EP81108327 A EP 81108327A EP 0063637 A2 EP0063637 A2 EP 0063637A2
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EP
European Patent Office
Prior art keywords
ink
channel plate
channels
head
plate
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
Application number
EP81108327A
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German (de)
French (fr)
Other versions
EP0063637B1 (en
EP0063637A3 (en
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
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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/en
Publication of EP0063637A3 publication Critical patent/EP0063637A3/en
Application granted granted Critical
Publication of EP0063637B1 publication Critical patent/EP0063637B1/en
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 printhead that solves this problem 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 accuracy using a galvanoplastic process or a photoceramic 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. Further details of the invention are given below with reference to an embodiment shown in the drawing.
  • FIG. 1 This shows a print head 1 which contains seven parallel ink channels 2.
  • a piezo transducer in the form of a piezo tube 3 comprising the ink channel is assigned to each ink channel 2.
  • 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 terms of their position and 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 will increase the pressure force and thus a better seal between reached 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 that are addressed to the headboard are essentially by strict adherence to a very narrow determined tolerance level of training of the ink discharge openings, but these are in the new arrangement in the channel plate, the tolerance requirements that are addressed to the headboard , less.
  • This can be created, for example, by machine casting.
  • the ink channels in the head part are constant in diameter, that is, for example, they do not taper, which considerably facilitates the threading of guide needles before the casting or the removal of the guide needles after the casting.

Abstract

1. A recording head for ink jet printers, having cylindrical ink channels provided in the recording head which are at least partially embraced by piezotransducers, characterised by a head part (1) in which the ink channels (2) are arranged parallel to one another ; by an adjoining channel plate (4) having ink guidance channels (5) into which the ink channels (2) open on one side of the channel plate (4) and which, on the other side, form outlet openings (6) ; by a nozzle plate (7) provided with nozzle openings (8) which are assigned to the outlet openings (6) of the channel plate (4) ; and by a fixing element (9) which at least partially embraces the head part (1), the channel plate (4), and the nozzle plate (7).

Description

Die Erfindung betrifft einen Schreibkopf für Tintenschreibeinrichtungen mit im Schreibkopf verlaufenden, zylinderförmigen von Piezowandlern teilweise umfaßten Tintenkanälen.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.

Für Tintenschreibeinrichtungen mit einem Mehrfachdüsen-schreibkopf ist es bekannt (DE-OS 25 43 451), die teilweise von piezokeramischen Antriebselementen zylinderförmig umfaßten Tintenkanäle im Schreibkopf von der Abdruckstelle strahlenförmig und knickfrei wegfluchtend verlaufend anzuordnen. Ein solcher Schreibkopf kann durch Vergießen der Antriebselemente bei gleichzeitiger Ausformung der Tintenkanäle hergestellt werden. Das geschieht dadurch, daß in eine Gießform Führungsnadeln und die Antriebselemente eingelegt werden. Die Nadeln werden nach dem Ausgießen wieder herausgezogen, so daß die Tintenkanäle als zylinderförmig verlaufende Hohlräume im Inneren des Kopfes entstehen. Nachteilig ist dabei, daß dabei sehr hohe Toleranzanforderungen eingehalten werden müssen. Weiterhin kann das Einlegen und das Herausziehen der Nadeln nur manuell durchgeführt werden, was den Fertigungsaufwand beträchtlich erhöht.For ink writing devices with a multiple nozzle writing head, it is known (DE-OS 25 43 451) to arrange the ink channels in the writing head, which are partially enclosed by piezoceramic drive elements, in the writing head in a radiation-like and kink-free alignment. Such a write head can be produced by casting the drive elements while simultaneously forming the ink channels. This is done by inserting guide needles and the drive elements into a mold. The needles are pulled out after pouring out, so that the ink channels are created as cylindrical cavities in the interior of the head. The disadvantage here is that very high tolerance requirements must be met. Furthermore, the insertion and removal of the needles can only be carried out manually, which considerably increases the manufacturing effort.

Schließlich besteht ein weiteres Problem darin, daß bei einer Anordnung mit die Tintenkanäle zylinderförmig umfassenden röhrchenförmigen Piezowandlern als Antriebselemente wegen der an der Austrittsstelle der Tintenkanäle erforderlichen engen Teilung die Antriebselemente erst im hinteren Bereich der Tintenkanäle angeordnet sein können, was zu einer Verlängerung des gesamten Kopfes führt. Aufgabe der Erfindung ist es, einen Schreibkopf für Tintenschreibeinrichtungen der oben angegebenen Art zu schaffen, für den die Toleranzanforderungen reduziert sind, bei dessen Herstellung der bisher erforderliche hohe Anteil an manueller Tätigkeit entfallen kann, und der schließlich zumindest in seinen Längsabmessungen kleiner gemacht werden kann.Finally, there is a further problem that, in the case of an arrangement with tubular piezo transducers encompassing the ink channels as drive elements, because of the narrow division required at the point of exit of the ink channels, the drive elements can only be arranged in the rear region of the ink channels, which leads to an elongation of the entire head . 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.

Ein Schreibkopf, mit dem diese Aufgabe gelöst wird, ist . durch die Merkmale des Patentanspruches 1 gekennzeichnet.A printhead that solves this problem is. characterized by the features of claim 1.

Ein wesentlicher Vorteil der vorgeschlagenen Anordnung besteht darin, daß der Hohlraum, der einen Tintenkanal bildet, aus mehreren Teilen besteht, die jeweils getrennt herstellbaren Teilen zugeordnet sind. Das gestattet es, den durch Vergießen hergestellten Kopfteil mit den parallel zueinander verlaufenden Tintenkanälen ohne die bisher einzuhaltenden Toleranzanforderungen maschinell herzustellen. Lediglich die Kanalplatte und die Düsenplatte, stellen Präzisionsteile dar. In besonders vorteilhafter Weise können diese nach einem galvanoplastischem Verfahren oder nach einem fotokeramischen Verfahren mit beliebiger Genauigkeit erstellt werden. Ein weiterer Vorteil besteht darin, daß die Antriebselemente nunmehr unmittelbar am Austrittsende der Tintenkanäle im Kopfteil oder doch in deren unmittelbaren Nähe angeordnet werden können. Damit ist eine deutliche Verkürzung der Gesamtlänge des Schreibkopfes verbunden, was sich im Endeffekt in einer erwünschten Verkleinerung eines mit solchen Schreibköpfen bestückten Druckwerkes auswirkt.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 accuracy using a galvanoplastic process or a photoceramic 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.

In Ausgestaltung der Erfindung besteht das Befestigungselement aus einem Bügel, dessen Arme federnd ausgebildet sind, und die über die einzelnen Teile des Schreibkopfes hinweggreifend die erforderliche Andruckskraft für einen dichtenden Zusammenhalt der einzelnen Teile liefern. Weitere Einzelheiten der Erfindung werden im folgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispieles gegeben.In an embodiment of the invention, 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. Further details of the invention are given below with reference to an embodiment shown in the drawing.

Dieses zeigt einen Schreibkopf 1, der sieben parallel verlaufende Tintenkanäle 2 enthält. Jedem Tintenkanal 2 ist ein Piezowandler in Form eines, den Tintenkanal umfassenden Piezoröhrchens 3 zugeordnet. Im Beispiel sind die Tintenkanäle 2 in zwei zueinander versetzt liegenden Reihen angeordnet. Eine sich unmittelbar an den Kopfteil 1 anschließende Kanalplatte 4, weist entsprechend der Anzahl der Tintenkanäle sieben Tintenführungskanäle 5 auf, in die auf der dem Kopfteil zugewandten Seite die Tintenkanäle 2 einmünden, und die auf der anderen Seite Austrittsöffnungen 6 besitzen. Die Austrittsöffnungen 6 sind dabei in der für die Austrittsüsen vorgesehenen Reihe angeordnet. Im Ausführungsbeispiel bilden sie eine übereinanderliegende Reihe von Öffnungen. Es ist jedoch auch eine andere Form möglich.This shows a print head 1 which contains seven parallel ink channels 2. A piezo transducer in the form of a piezo tube 3 comprising the ink channel is assigned to each ink channel 2. In the example, 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.

Als dichtende Abdeckung nach außen und zur Gewährleistung eines exakten Tröpfchenausstosses ist die Düsenplatte 7 mit den Düsenöffnungen 8 vorhanden. Die Düsenöffnungen 8 entsprechend sowohl in ihrer Lage als auch in ihrer Anzahl den Austrittsöffnungen 6 der Kanalplatte 4.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 terms of their position and their number.

Zur sichernden Befestigung der einzelnen Teile, nämlich des Kopfteiles 1, der Kanalplatte 4 und der Düsenplatte 7, dient ein Bügel 9, dessen federnde Arme 10 nach dem Zusammenfügen der einzelnen Teile über diese hinweggreifen und in Ausnehmungen 11 des Kopfteiles 1 einrastend befestigt werden. Es ist vorteilhaft, wenn der Bügel 9 den größten Teil der Außenfläche der Düsenplatte 7 abdeckt und nur im Bereich der Austrittsöffnungen 8 eine entsprechende Aussparung 12 aufweist. Damit wird eine Erhöhung der Andruckkraft und damit eine bessere Abdichtung zwischen den einzelnen Teilen des Schreibkopfes erreicht. Bedarfsweise kann, was hier nicht dargestellt ist, zur Verbesserung der Abdichtung zwischen den einzelnen Teilen des Schreibkopfes eine mit entsprechenden öffnungen versehene Abdichtfolie eingelegt sein.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 will increase the pressure force and thus a better seal between reached 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.

Da die für Tintenschreibeinrichtungen geforderte und die Schriftqualität bestimmende Präzision im wesentlichen durch die exakte Einhaltung sehr enger Toleranzanforderun- gen für die Ausbildung der Tintenaustrittsöffnungen bestimmt wird, diese bei der neuen Anordnung aber in der Kanalplatte liegen, sind die Toleranzanforderungen, die an den Kopfteil gerichtet werden, geringer. Dieser kann somit beispielsweise durch maschinelles-Vergießen erstellt werden. In diesem Zusammenhang ist es auch von Bedeutung, daß die Tintenkanäle im Kopfteil in ihrem Durchmesser konstant sind, also sich z.B. nicht verjüngen, was das Einfädeln von Führungsnadeln vor dem Vergießen bzw. das Herausziehen der Führungsnadeln nach dem Vergießen erheblich erleichtern.Since the required ink writing devices and the writing quality-determining precision is essentially by strict adherence to a very narrow determined tolerance level of training of the ink discharge openings, but these are in the new arrangement in the channel plate, the tolerance requirements that are addressed to the headboard , less. This can be created, for example, by machine casting. In this context, it is also important that the ink channels in the head part are constant in diameter, that is, for example, they do not taper, which considerably facilitates the threading of guide needles before the casting or the removal of the guide needles after the casting.

Claims (5)

1. Schreibkopf für Tintenschreibeinrichtungen mit im Schreibkopf verlaufenden, zylinderförmigen, von Piezowandlern zumindest teilweise umfaßten Tintenkanälen, gekennzeichnet durch einen Kopfteil (1) in dem die Tintenkanäle (2) zueinander parallel verlaufend angeordnet sind,
durch eine sich daran anschließende Kanalplatte (4) mit Tintenzuführungskanälen (5) in die auf der einen Seite der Kanalplatte (4) die Tintenkanäle (2) einmünden, und die auf der anderen Seite Austrittsöffnungen (6) bilden, durch eine Düsenplatte (7) mit den Austrittsöffnungen (6) der Kanalplatte (4) zugeordneten Düsenöffnungen (8) und durch einen, den Kopfteil (1), die Kanalplatte (4) und die Düsenplatte (7) zumindest teilweise umfassendes Befestigungselement (9).1. writing head for ink writing devices with cylindrical ink channels running in the writing head and at least partially encompassed by piezo transducers, characterized by a head part (1) in which the ink channels (2) are arranged parallel to one another,
through an adjoining channel plate (4) with ink supply channels (5) into which the ink channels (2) open on one side of the channel plate (4) and which form outlet openings (6) on the other side, through a nozzle plate (7) with the outlet openings (6) of the channel plate (4) assigned to nozzle openings (8) and through a fastening element (9) at least partially encompassing the head part (1), the channel plate (4) and the nozzle plate (7). 2. Schreibkopf nach Anspruch 1, dadurch gekennzeichnet, daß der Kopfteil (1) mit den Tintenkanaälen (2) und den Antriebselementen (3) ein im Gießverfahren hergestelltes Kunststoffteil ist.2. Writing head according to claim 1, characterized in that the head part (1) with the ink channel channels (2) and the drive elements (3) is a plastic part produced in the casting process. 3. Schreibkopf nach Anspruch 1,
dadurch gekennzeichnet , daß die Kanalplatte (4) ein galvanoplastisch hergestelltes Teil ist.3. printhead according to claim 1,
characterized in that the channel plate (4) is a galvanoplastic part. 4. Schreibkopf nach Anspruch 1,
dadurch gekennzeichnet , daß die Kanalplatte (4) ein fotokeramisch hergestelltes Teil ist.4. write head according to claim 1,
characterized in that the channel plate (4) is a photoceramic part. 5. Schreibkopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß das Befestigungselement (9) ein Bügel mit federnden Ansätzen (10) ist, die über die Düsenplatte (7) und die Kanalplatte (4) hinweggreifend in Ausnehmungen (11) des Kopfteiles (1) einschnappbar sind.5. Writing head according to one of claims 1 to 4, characterized in that the fastening element (9) is a bracket with resilient lugs (10), via the nozzle plate (7) and the channel plate te (4) can be snapped into recesses (11) of the head part (1).
EP19810108327 1981-04-29 1981-10-14 Ink jet recording head with cylindrical ink channels Expired EP0063637B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3117028 1981-04-29
DE19813117028 DE3117028A1 (en) 1981-04-29 1981-04-29 WRITING HEAD FOR INK WRITING DEVICES WITH CYLINDRICAL INK CHANNELS

Publications (3)

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

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EP19810108327 Expired EP0063637B1 (en) 1981-04-29 1981-10-14 Ink jet recording head with cylindrical ink channels

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EP (1) EP0063637B1 (en)
JP (1) JPS57182454A (en)
DE (1) DE3117028A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176489A2 (en) * 1984-09-25 1986-04-02 Ing. C. Olivetti & C., S.p.A. Ink-jet printing head, a method for its manufacture, and a tool useable for carrying out this method
EP0183224A1 (en) * 1984-11-29 1986-06-04 Siemens Aktiengesellschaft Print head for an ink jet printer
GB2182611A (en) * 1985-11-06 1987-05-20 Pitney Bowes Inc Impulse ink jet print head and methods of making the same
EP0260884A2 (en) * 1986-09-17 1988-03-23 Lexmark International, Inc. Print head for drop-on-demand ink jet printing apparatus
EP0379781A2 (en) * 1988-10-31 1990-08-01 Canon Kabushiki Kaisha Liquid jet recorder
EP0383019A2 (en) * 1989-01-13 1990-08-22 Canon Kabushiki Kaisha Ink jet recording head, ink jet recording apparatus and wiping method therefor
EP0509491A2 (en) * 1991-04-16 1992-10-21 Canon Kabushiki Kaisha Method and apparatus for manufacturing ink jet head
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
EP0790129A2 (en) * 1996-02-13 1997-08-20 Canon Kabushiki Kaisha Liquid ejection apparatus, head unit and ink-jet cartridge
US5752303A (en) * 1993-10-19 1998-05-19 Francotyp-Postalia Ag & Co. Method for manufacturing a face shooter ink jet printing head

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3630206A1 (en) * 1985-09-06 1987-03-19 Fuji Electric Co Ltd INK JET PRINT HEAD
DE4100730C2 (en) * 1991-01-09 1997-04-03 Francotyp Postalia Gmbh Method for a liquid jet printing device
DE4424771C1 (en) 1994-07-05 1995-11-23 Francotyp Postalia Gmbh Ink printhead made up of individual ink printing modules

Citations (3)

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FR2325510A1 (en) * 1975-09-29 1977-04-22 Siemens Ag PIEZOELECTRIC DRIVE ELEMENT FOR WRITING HEAD OF INK MOSAIC WRITING DEVICE
FR2326059A1 (en) * 1975-09-29 1977-04-22 Siemens Ag Contacting moulded electrical modules with piezoelectric elements - has spring loaded contact elements repelling mould and contacting metallised surface
FR2395145A1 (en) * 1977-06-24 1979-01-19 Siemens Ag NOZZLE PLATE FOR INK WRITING DEVICE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325510A1 (en) * 1975-09-29 1977-04-22 Siemens Ag PIEZOELECTRIC DRIVE ELEMENT FOR WRITING HEAD OF INK MOSAIC WRITING DEVICE
FR2326059A1 (en) * 1975-09-29 1977-04-22 Siemens Ag Contacting moulded electrical modules with piezoelectric elements - has spring loaded contact elements repelling mould and contacting metallised surface
FR2395145A1 (en) * 1977-06-24 1979-01-19 Siemens Ag NOZZLE PLATE FOR INK WRITING DEVICE

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176489A3 (en) * 1984-09-25 1987-03-11 Ing. C. Olivetti & C., S.P.A. Ink-jet printing head, a method for its manufacture, and a tool useable for carrying out this method
EP0176489A2 (en) * 1984-09-25 1986-04-02 Ing. C. Olivetti & C., S.p.A. Ink-jet printing head, a method for its manufacture, and a tool useable for carrying out this method
EP0183224A1 (en) * 1984-11-29 1986-06-04 Siemens Aktiengesellschaft Print head for an ink jet printer
GB2182611B (en) * 1985-11-06 1990-09-05 Pitney Bowes Inc Impulse ink jet print head and methods of making the same
GB2182611A (en) * 1985-11-06 1987-05-20 Pitney Bowes Inc Impulse ink jet print head and methods of making the same
EP0260884A2 (en) * 1986-09-17 1988-03-23 Lexmark International, Inc. Print head for drop-on-demand ink jet printing apparatus
EP0260884A3 (en) * 1986-09-17 1989-05-17 International Business Machines Corporation Print head for drop-on-demand ink jet printing apparatus
US5095321A (en) * 1988-10-31 1992-03-10 Canon Kabushiki Kaisha Liquid jet recording head joined by a biasing member
EP0379781A2 (en) * 1988-10-31 1990-08-01 Canon Kabushiki Kaisha Liquid jet recorder
EP0379781A3 (en) * 1988-10-31 1991-01-30 Canon Kabushiki Kaisha Liquid jet recorder
US5534898A (en) * 1989-01-13 1996-07-09 Canon Kabushiki Kaisha Ink jet head, ink jet apparatus and wiping method therefor
EP0383019A3 (en) * 1989-01-13 1992-06-17 Canon Kabushiki Kaisha Ink jet recording head, ink jet recording apparatus and wiping method therefor
EP0383019A2 (en) * 1989-01-13 1990-08-22 Canon Kabushiki Kaisha Ink jet recording head, ink jet recording apparatus and wiping method therefor
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
GB2243338B (en) * 1990-04-11 1994-10-05 Canon Kk Ink jet recording system
EP0509491A2 (en) * 1991-04-16 1992-10-21 Canon Kabushiki Kaisha Method and apparatus for manufacturing ink jet head
EP0509491A3 (en) * 1991-04-16 1992-11-25 Canon Kabushiki Kaisha Method and apparatus for manufacturing ink jet head
US5498306A (en) * 1991-04-16 1996-03-12 Canon Kabushiki Kaisha Method and apparatus for manufacturing ink jet recording head
US5752303A (en) * 1993-10-19 1998-05-19 Francotyp-Postalia Ag & Co. Method for manufacturing a face shooter ink jet printing head
US6070972A (en) * 1993-10-19 2000-06-06 Francotyp-Postalia Ag & Co. Face shooter ink jet printing head
EP0790129A2 (en) * 1996-02-13 1997-08-20 Canon Kabushiki Kaisha Liquid ejection apparatus, head unit and ink-jet cartridge
EP0790129A3 (en) * 1996-02-13 1998-10-14 Canon Kabushiki Kaisha Liquid ejection apparatus, head unit and ink-jet cartridge
US6435648B1 (en) 1996-02-13 2002-08-20 Canon Kabushiki Kaisha Liquid ejection apparatus using air flow to remove mist

Also Published As

Publication number Publication date
DE3117028A1 (en) 1982-11-18
EP0063637B1 (en) 1985-03-13
EP0063637A3 (en) 1983-08-24
JPS57182454A (en) 1982-11-10

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