WO1991008112A1 - Printing head for ink-jet printer - Google Patents

Printing head for ink-jet printer Download PDF

Info

Publication number
WO1991008112A1
WO1991008112A1 PCT/DE1990/000838 DE9000838W WO9108112A1 WO 1991008112 A1 WO1991008112 A1 WO 1991008112A1 DE 9000838 W DE9000838 W DE 9000838W WO 9108112 A1 WO9108112 A1 WO 9108112A1
Authority
WO
WIPO (PCT)
Prior art keywords
chip
ink
contact strip
nozzles
jet printer
Prior art date
Application number
PCT/DE1990/000838
Other languages
German (de)
French (fr)
Inventor
Günter ROSENSTOCK
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1991008112A1 publication Critical patent/WO1991008112A1/en

Links

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
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14072—Electrical connections, e.g. details on electrodes, connecting the chip to the outside...

Definitions

  • the invention relates to an inkjet print head for inkjet printers with a row of nozzles arranged on one side of a chip, which row is supplied with ink via an ink supply opening provided in the chip and the heating elements of which are connected to at least one contact strip via conductor tracks.
  • chip edge shooter i.e. Ink channel, heating element and nozzle lie in a common axis
  • chip edge lengths are required at the technically feasible spacing (150-250 ⁇ m), which are usually significantly larger than the dimensions of the ink supply (nozzle area) including the sealing frame. This results in excess free areas on both sides of the chip, which unnecessarily increase the area requirement of the chip.
  • the base area of the chip is approximately triangular, with one Side the nozzles and a contact strip is arranged on the other two sides.
  • Open spaces can thereby be avoided, as a result of which the head can be made smaller. It is also possible to separate the wafer by straight-line separation. In addition to saving material, the smaller design of the triangular chips allows better use of the wafer, which means that manufacturing costs can be sought.
  • the base area of the triangular chip is formed by an equilateral or isosceles triangle.
  • the ink supply opening is then expediently located approximately in the middle of the base area of the triangle, as a result of which an economical ink supply to the nozzles can be achieved.
  • FIG. 1 shows a known embodiment of a rectangular chip with a contact strip
  • FIG. 2 shows a known embodiment of a rectangular chip with two contact strips
  • Figure 3 shows a triangular chip according to the invention.
  • the chip 1, 2 shown in FIGS. 1 and 2 has a rectangular base area.
  • a row of nozzles 3, 4 is located on the front edge of the chip.
  • a contact strip 5 is provided on the opposite edge in the arrangement according to FIG.
  • the ink feed opening 6 is located in the vicinity of the nozzles 3.
  • the contact strip has a much larger width than the nozzle area. For this reason, the free areas 7, 8 arise which are in themselves unnecessary and increase the material costs.
  • FIG. 2 also brings no improvement.
  • FIG. 3 shows a triangular chip 12.
  • the nozzles 13 are arranged on one edge and are supplied with ink via the ink feed opening 14.
  • a contact strip 15, 16 is provided on each of the two other edges. The consequence of this arrangement is the lack of an open space.

Abstract

The invention concerns a printing head for an ink-jet printer. Located on one side of a chip (12) is a row of nozzles (13) supplied with ink through an opening (14) in the chip, their heating elements being connected, by conductor tracks on the chip, with at least one contact strip (15, 16). The aim of the invention is to design the surface of the chip so that there are no unnecessary exposed areas. To this end, the surface of the chip is approximately triangular, the ink nozzles being disposed on one side of the triangle and a contact strip along each of the other two sides.

Description

Tiπtenstrahldruckkopf für Tintenstrahldrucker Inkjet printhead for inkjet printers
Die Erfindung betrifft einen Tintenstrahldruckkopf für Tinten¬ strahldrucker mit einer an einer Seite eines Chips angeordneten Düsenreihe, die über eine im Chip vorgesehene Tintenzuführöff¬ nung mit Tinte versorgt wird und deren Heizelemente über Lei¬ terbahnen mit zumindest einer Kontaktleiste verbunden sind.The invention relates to an inkjet print head for inkjet printers with a row of nozzles arranged on one side of a chip, which row is supplied with ink via an ink supply opening provided in the chip and the heating elements of which are connected to at least one contact strip via conductor tracks.
Bei Tintenstrahldruckköpfen vom Typ "Edge-shooter" , d.h. Tin¬ tenkanal, Heizelement und Düse liegen in einer gemeinsamen Achse, sind rechteckige Chipformeπ bekannt, bei denen die Kon- taktleisten in einer Reihe an der den Dusenaustrittsoffnuπgen gegenüberliegenden Chipkante angeordnet sind. Für die Unter¬ bringung der einzelnen Kontaktbahnen der Kontaktleiste sind bei den technisch machbaren Teilungsabständen (150 - 250 μm) Chip¬ kantenlängen erforderlich, die meist deutlich größer sind als die Abmessungen der Tintenzuführung (Düsenbereich) einschlie߬ lich Dichtrahmen. Dadurch ergeben sich zu beiden Seiten des Chips überschüssige Freiflächen, die den Flächenbedarf des Chips unnötig erhöhen.For inkjet printheads of the type "edge shooter", i.e. Ink channel, heating element and nozzle lie in a common axis, rectangular chip shapes are known in which the contact strips are arranged in a row on the chip edge opposite the nozzle outlet openings. In order to accommodate the individual contact tracks of the contact strip, chip edge lengths are required at the technically feasible spacing (150-250 μm), which are usually significantly larger than the dimensions of the ink supply (nozzle area) including the sealing frame. This results in excess free areas on both sides of the chip, which unnecessarily increase the area requirement of the chip.
Selbst bei einer Aufteilung der Kontaktleisten auf beide seit¬ liche Chipkanten läßt sich eine überschüssige Freifläche nicht vermeiden, da die notwendige seitliche Kaπtenlänge des Chips größer ist als die Abmessungen der Tintenzuführung und des Dichtrahmens.Even if the contact strips are divided between the two lateral chip edges, an excess free area cannot be avoided since the necessary lateral edge length of the chip is greater than the dimensions of the ink supply and the sealing frame.
Es ist Aufgabe der Erfindung die Grundfläche des Chips so zu gestalten, daß unnötige Freiflächen auf dem Chip vermieden wer¬ den.It is an object of the invention to design the base area of the chip in such a way that unnecessary free areas on the chip are avoided.
Die Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Grundfläche des Chips etwa dreiecksförmig ist, wobei an einer Seite die Düsen und an den beiden anderen Seiten je eine Kon¬ taktleiste angeordnet ist.The object is achieved according to the invention in that the base area of the chip is approximately triangular, with one Side the nozzles and a contact strip is arranged on the other two sides.
Dadurch können Freiflächen vermieden werden, wodurch der Kopf kleiner ausgebildet werden kann. Außerdem ist ein Vereinzeln des Wafers durch geradliniges Trennen möglich. Neben der Ma¬ terialeinsparung erlaubt die kleinere Bauform der dreieckför- migen Chips eine bessere Ausnutzung des Wafers, wodurch die Herstellkosten gesucht werden können.Open spaces can thereby be avoided, as a result of which the head can be made smaller. It is also possible to separate the wafer by straight-line separation. In addition to saving material, the smaller design of the triangular chips allows better use of the wafer, which means that manufacturing costs can be sought.
Es kann vorteilhaft sein, wenn die Grundfläche des dreiecksför- migen Chips durch ein gleichseitiges oder gleichschenkliges Dreieck gebildet ist.It can be advantageous if the base area of the triangular chip is formed by an equilateral or isosceles triangle.
Die Tintenzuführöffnung befindet sich dann zweckmäßigerweise in etwa der Mitte der Grundfläche des Dreiecks, wodurch eine gün¬ stige Tinteπzuführung zu den Düsen erzielbar ist.The ink supply opening is then expediently located approximately in the middle of the base area of the triangle, as a result of which an economical ink supply to the nozzles can be achieved.
Im folgenden sei die Erfindung anhand von drei Figuren näher erläutert. Es zeigenThe invention is explained in more detail below with reference to three figures. Show it
Figur 1 eine bekannte Ausführung eines rechteckformigen Chips mit einer Kon^aktleiste,FIG. 1 shows a known embodiment of a rectangular chip with a contact strip,
Figur 2 eine bekannte Ausführung eines rechteckformigen Chips mit zwei Kontaktleisten,FIG. 2 shows a known embodiment of a rectangular chip with two contact strips,
Figur 3 einen dreiecksförmigen Chip nach der Erfindung.Figure 3 shows a triangular chip according to the invention.
Der in den Figuren 1 und 2 dargestellte Chip 1, 2 weist eine rechteckför ige Grundfläche auf. An der vorderen Kante des Chips befinden sich jeweils ein Reihe von Düsen 3, 4. An der gegenüberliegenden Kante ist bei der Anordnung nach Figur 1 eine Kontaktleiste 5 vorgesehen, über den die elektrische Kon- taktierung zur Ansteuerung der Düsen vorgenommen wird. Die Tin¬ tenzuführöffnung 6 befindet sich in der Nähe der Düsen 3. Wie sofort aus der Figur erkennbar ist, weist die Kontaktleiste eine wesentlich größere Breite auf als der Düsenbereich. Aus diesem Grund entstehen die Freiflächen 7, 8, die an sich unnö¬ tig sind und die Materialkosten erhöhen.The chip 1, 2 shown in FIGS. 1 and 2 has a rectangular base area. A row of nozzles 3, 4 is located on the front edge of the chip. A contact strip 5 is provided on the opposite edge in the arrangement according to FIG. The ink feed opening 6 is located in the vicinity of the nozzles 3. As can be seen immediately from the figure, the contact strip has a much larger width than the nozzle area. For this reason, the free areas 7, 8 arise which are in themselves unnecessary and increase the material costs.
Auch die Anordnung nach Figur 2 bringt keine Verbesserung. Hier befinden sich zwei Kontaktleisten 9, 10 an gegenüberliegenden Kanten des Chips, während der Düsenbereich an einer senkrecht dazu verlaufenden Kante zwischen den Kontaktbereichen angeord¬ net ist. Aufgrund dieser Anordnung entsteht auch hier eine Freifläche 11, die ungenutzt bleibt.The arrangement according to FIG. 2 also brings no improvement. Here there are two contact strips 9, 10 on opposite edges of the chip, while the nozzle area is arranged on an edge running perpendicular to it between the contact areas. Because of this arrangement, an open space 11 is also created here, which remains unused.
Die Figur 3 zeigt einen dreiecksförmigen Chip 12. An einer Kan¬ te sind die Düsen 13 angeordnet, die über die Tintenzuführöff¬ nung 14 mit Tinte versorgt werden. An den beiden anderen Kanten ist jeweils eine Kontaktleiste 15, 16 vorgesehen. Die Folge dieser Anordnung ist das Fehlen einer Freifläche. FIG. 3 shows a triangular chip 12. The nozzles 13 are arranged on one edge and are supplied with ink via the ink feed opening 14. A contact strip 15, 16 is provided on each of the two other edges. The consequence of this arrangement is the lack of an open space.

Claims

Patentansprüche Claims
1. Tintenstrahldruckkopf für Tintenstrahldrucker mit einer an einer Seite eines Chips angeordnten Düsenreihe, die über eine im Chip vorgesehene Tintenzuführöffnung mit Tinte versorgt wird und deren Heizelemente über auf dem Chip angeordnete Leiter¬ bahnen mit zumindest einer Kontaktleiste verbunden sind, d a d u r c h g e k e n n z e i c h n e t, daß die Grundflä¬ che des Chips (12) etwa dreiecksförmig ist, wobei an einer Sei- te des Dreiecks die Düsen (13) und an den beiden anderen Seiten je eine Kontaktleiste (15, 16) angeordnet ist (Fig. 3).1. Inkjet printhead for inkjet printers with a nozzle row arranged on one side of a chip, which is supplied with ink via an ink supply opening provided in the chip and the heating elements of which are connected via conductor tracks arranged on the chip to at least one contact strip, characterized in that the base area surface of the chip (12) is approximately triangular, the nozzles (13) being arranged on one side of the triangle and a contact strip (15, 16) each on the other two sides (FIG. 3).
2. Tintenstrahldruckkopf nach Anspruch 1, d a- d u r c h , g e k e n n z e i c h n e t , daß die Grund- fläche des dreiecksförmigen Chips durch ein gleichseitiges oder gleichschenkliges Dreieck gebildet ist. 2. Ink jet print head according to claim 1, that the base of the triangular chip is formed by an equilateral or isosceles triangle.
PCT/DE1990/000838 1989-11-29 1990-11-05 Printing head for ink-jet printer WO1991008112A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939467 1989-11-29
DEP3939467.0 1989-11-29

Publications (1)

Publication Number Publication Date
WO1991008112A1 true WO1991008112A1 (en) 1991-06-13

Family

ID=6394423

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1990/000838 WO1991008112A1 (en) 1989-11-29 1990-11-05 Printing head for ink-jet printer

Country Status (1)

Country Link
WO (1) WO1991008112A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1078769A3 (en) * 1999-08-25 2002-01-02 Xerox Corporation Print element and method for assembling a print head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633274A (en) * 1984-03-30 1986-12-30 Canon Kabushiki Kaisha Liquid ejection recording apparatus
US4878070A (en) * 1988-10-17 1989-10-31 Xerox Corporation Thermal ink jet print cartridge assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633274A (en) * 1984-03-30 1986-12-30 Canon Kabushiki Kaisha Liquid ejection recording apparatus
US4878070A (en) * 1988-10-17 1989-10-31 Xerox Corporation Thermal ink jet print cartridge assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1078769A3 (en) * 1999-08-25 2002-01-02 Xerox Corporation Print element and method for assembling a print head
US6655785B1 (en) 1999-08-25 2003-12-02 Xerox Corporation Print element and method for assembling a print head

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