EP0865925B1 - Ink cartridge for an ink jet printer or plotter - Google Patents

Ink cartridge for an ink jet printer or plotter Download PDF

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Publication number
EP0865925B1
EP0865925B1 EP98810176A EP98810176A EP0865925B1 EP 0865925 B1 EP0865925 B1 EP 0865925B1 EP 98810176 A EP98810176 A EP 98810176A EP 98810176 A EP98810176 A EP 98810176A EP 0865925 B1 EP0865925 B1 EP 0865925B1
Authority
EP
European Patent Office
Prior art keywords
container according
membrane
plotter
ink
trough
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
EP98810176A
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German (de)
French (fr)
Other versions
EP0865925A1 (en
Inventor
Francisco Faoro
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.)
Pelikan Hardcopy Production AG
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Pelikan Hardcopy Production 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 Pelikan Hardcopy Production AG filed Critical Pelikan Hardcopy Production AG
Publication of EP0865925A1 publication Critical patent/EP0865925A1/en
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Publication of EP0865925B1 publication Critical patent/EP0865925B1/en
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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
    • B41J2/17503—Ink cartridges
    • B41J2/17553—Outer structure
    • 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
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure

Description

Aus der EP-A-238 829 ist ein Tintenstrahl-Druckkopf mit einem Tintenbehälter bekannt. Der Behälterraum ist bei einer Ausführungsform durch eine topfförmige Membran in einen Tinten-Vorratsraum und einen Luftraum unterteilt. Der Rand der topfförmigen Membran ist mittels eines Rings gegen einen zylindrischen Vorsprung im Innern des Behälters abgedichtet. Diese Lösung eignet sich für Druckköpfe.From EP-A-238 829 is an ink jet printhead with a Ink tank known. The container space is in one embodiment through a cup-shaped membrane into an ink storage room and divided an airspace. The edge of the pot-shaped Membrane is against a cylindrical by means of a ring Sealing sealed inside the container. This solution is suitable yourself for printheads.

EP-A-745 481 offenbart einen anderen bekannten Tintenstrahl-Druckkopf. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Tintenbehälter der eingangs genannten Art anzugeben, der ein grosses Fassungsvermögen hat und sich insbesondere auch für Tintenstrahl-Plotter eignet. Diese Aufgabe wird durch die Merkmalskombination des Anspruchs 1 gelöst.EP-A-745 481 discloses another known ink jet printhead. The present invention has for its object a Specify ink tank of the type mentioned, the one has a large capacity and is particularly suitable for inkjet plotters is suitable. This task is accomplished through the combination of features of claim 1 solved.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung erläutert. Die einzige Figur zeigt einen Längsschnitt durch einen Tintenbehälter in perspektivischer Darstellung.An exemplary embodiment of the invention is described below the drawing explained. The only figure shows a longitudinal section through an ink tank in perspective.

Das Gehäuse 1 des Behälters besteht aus einem Unterteil 2 und einem Deckel 3 aus PP. Der Unterteil 2 hat eine Wanne 4 gebildet aus zwei halbkugelkalottenförmigen Schalen 5, die seitlich in zwei Zylinderschalen 6 und unten in zwei leicht geneigte, ebene Schalen 7 übergehen. Die Schalen 7 sind gegen einen zylindrischen, nach aussen abstehenden, rohrförmigen Stutzen 8 geneigt. Der Stutzen 8 hat einen nach innen ragenden Ringflansch 9, in welchen ein elastomerer Stopfen 10 aus NBR (Acrylnitril-Butadien-Kautschuk) eingeschnappt ist. Der Stopfen 10 hat innen ein Sackloch 11 und dient zum Einstechen einer Hohlnadel des Plotters. Das Sackloch verhindert, dass die Nadel die nachfolgend beschriebene Membran verletzen kann.The housing 1 of the container consists of a lower part 2 and a lid 3 made of PP. The lower part 2 has a trough 4 of two hemispherical cups 5, the side in two cylinder shells 6 and below in two slightly inclined, level Skip bowls 7. The shells 7 are against a cylindrical, outwardly projecting, tubular nozzle 8 inclined. The nozzle 8 has an inwardly projecting ring flange 9, in which is an elastomeric plug 10 made of NBR (acrylonitrile butadiene rubber) snapped. The plug 10 has inside a blind hole 11 and is used for piercing a hollow needle Plotters. The blind hole prevents the needle from following described membrane can injure.

Der obere Rand 16 der Schalen 5, 6 geht in eine ebene, horizontale Wand 15 über, in der unmittelbar ausserhalb des oberen Randes 16 der Wanne 4 eine Umfangsnut 17 mit rechteckigem Querschnitt gebildet ist. In der Draufsicht hat die Nut 17 zwei halbkreisförmige und zwei geradlinige, diese verbindende Abschnitte. In die Wanne 4 ist eine elastomere, dünne Membran 18 aus NBR eingesetzt, welche längs ihrer Peripherie einen ebenen Abschnitt 19 und daran angeformt einen Wulst 20 hat. Der Wulst 20 ist im Querschnitt im wesentlichen rechteckförmig und hat auf beiden Seiten umlaufende Vorsprünge, welche mit Vorspannung zwischen die beiden Flanken der Nut 17 radial abdichtend eingesetzt sind. Die Form der Membran 18 entspricht der Form der Wanne 4. Am ebenen Boden der Membran 18 sind vier oben abgeschlossene Hohlzapfen 21 angeformt mit einem äusseren Ringrand 22. Die Zapfen 21 sind in Durchgangsbohrungen einer der Form der Schalen 7 angepassten Kunststoffplatte 23 eingeschnappt.The upper edge 16 of the shells 5, 6 goes into a flat, horizontal Wall 15 above, in the immediately outside the upper edge 16 of the tub 4 has a circumferential groove 17 with a rectangular cross section is formed. In the top view, the groove 17 has two semicircular and two rectilinear sections connecting them. An elastomeric, thin membrane 18 is in the tub 4 made of NBR, which has a flat along its periphery Section 19 and has a bead 20 formed thereon. The bead 20 is substantially rectangular in cross section and has protrusions on both sides, which with prestress between the two flanks of the groove 17 used radially sealing are. The shape of the membrane 18 corresponds to the shape of the trough 4. At the flat bottom of the membrane 18 are four closed at the top Hollow pin 21 formed with an outer ring edge 22. The pin 21 are in the form of the shells 7 in through bores adapted plastic plate 23 snapped.

Neben der Wanne ist im Unterteil 2 eine zusätzliche Kammer 26 gebildet, die unten einen weiteren Stutzen 27 mit einem weiteren Stopfen 10 hat. Die Kammer 26 ist mit einem saugfähigen Material, zum Beispiel Zellulose 28 gefüllt, das zur Aufnahme von Resttinte dient, welche beim Spülen der Druckkopfdüsen anfällt. Von der Peripherie der Wand 15 und der Aussenwände der Kammer 26 steht nach unten eine vertikale Wand 29 mit einem ebenen, unteren Rand ab. Die Wand 15 hat zwischen der Nut 17 und der Wand 29 mehrere rechteckige Durchgangsöffnungen 30.In addition to the tub, there is an additional chamber 26 in the lower part 2 formed, the bottom a further nozzle 27 with another Has plug 10. Chamber 26 is made with an absorbent material, for example, cellulose 28 filled to accommodate Waste ink is used, which arises when flushing the print head nozzles. From the periphery of the wall 15 and the outer walls of the chamber 26 stands down a vertical wall 29 with a flat, lower Edge off. The wall 15 has between the groove 17 and the wall 29 a plurality of rectangular through openings 30.

Der Deckel 3 hat eine Aussenwand 35 und eine Innenwand 36. Die Kontur der Innenwand 36 entspricht der Kontur der Mittellinie der Nut 17. Die Innenwand 36 überragt die Aussenwand 35 geringfügig. Ihr unterer Rand ist auf den Wulst 20 aufgepresst. In der Aussenwand 35 sind paarweise mehrere federnde Zungen 37 angeformt, welche unten Haken haben. Die Haken sind an der Unterseite der Öffnungen 30 eingeschnappt. In zwei Durchgangsbohrungen der Aussenwand 35 ist eine Achse 38 drehbar gelagert. An der Achse 38 ist mittig ein Hebel 39 angeformt, welcher durch eine nicht dargestellte Feder gegen die Platte 23 angedrückt ist. In der Figur ist der Hebel 39 in der oberen Endstellung gezeichnet. Zwischen der Aussenwand 35 und der Innenwand 36 ist auf der in der Figur hinteren Seite ein weiterer, längerer Hebel 40 angeformt. In der unteren Endstellung des Hebels 39 durchgreift dieser Hebel 40 einen Schlitz in der Wand 15 und ragt über den unteren Rand der Wand 29 hervor. Diese Stellung wird von einer Lichtschranke des Plotters erfasst und meldet das Ende des Tintenvorrates. Rechts ist am Deckel 3 eine weitere, umlaufende Wand 41 angeformt, welche in die Innenseite der Kammer 26 eingeschoben ist und diese nach oben abschliesst. Der Deckel 3 hat oben eine im Querschnitt U-förmige Leiste 42 mit zwei einseitig bis in die Mitte der Leiste 42 ragenden Schlitzen 43. Eine angeformte, abgesenkte, horizontale Platte 44 zwischen den Schlitzen 43 hat eine über die Aussenwand 35 vorstehende Zunge 45 zum Einrasten im Plotter. Durch Eindrücken einer Grifffläche 46 kann die Zunge 45 zurückgezogen und der Behälter 1 entfernt werden.The lid 3 has an outer wall 35 and an inner wall 36 Contour of the inner wall 36 corresponds to the contour of the center line the groove 17. The inner wall 36 projects slightly beyond the outer wall 35. Its lower edge is pressed onto the bead 20. In the Outer wall 35 is formed in pairs several resilient tongues 37, which have hooks below. The hooks are on the bottom the openings 30 snapped. In two through holes the outer wall 35, an axis 38 is rotatably supported. At the Axle 38 is formed in the middle of a lever 39, which by a Not shown spring is pressed against the plate 23. In the figure shows the lever 39 in the upper end position. Between the outer wall 35 and the inner wall 36 is on the in the figure rear side formed another, longer lever 40. In the lower end position of the lever 39, this engages Lever 40 has a slot in wall 15 and protrudes over the lower one Edge of the wall 29 emerges. This position is from a The plotter's photocell detects and reports the end of the ink supply. On the right is another, all-round on cover 3 Wall 41 formed, which is inserted into the inside of the chamber 26 and closes it up. The lid 3 has above a cross-sectionally U-shaped bar 42 with two on one side 42 extending into the center of the bar 42 slots 43. A molded, lowered horizontal plate 44 between the slots 43 has a tongue 45 projecting beyond the outer wall 35 for latching in the plotter. By pressing in a grip surface 46 the tongue 45 is withdrawn and the container 1 is removed.

Zum Einfüllen der Tinte wird eine Hohlnadel in den Stopfen 10 eingesteckt und zunächst der Zwischenraum zwischen Membran 18 und Wanne 4 evakuiert. Damit die Luft vollständig evakuiert werden kann, sind auf der Wanne 4 zwei vom oberen Rand 16 bis zum Stutzen 8 in Längsrichtung verlaufende, dünne Rippen 51 angeformt. Hierauf wird durch die Hohlnadel Tinte eingefüllt, bis die Membran 18 vollständig umgestülpt ist. Damit kann der Behälter in den Plotter eingesetzt werden, wobei beim Einsetzen im Plotter fest installierte Hohlnadeln automatisch die Stopfen 10 durchstechen und den Anschluss sicherstellen.A hollow needle is inserted into the plug 10 to fill the ink inserted and first the space between membrane 18 and tub 4 evacuated. So that the air can be completely evacuated can, are on the tub 4 two from the upper edge 16 to Stub 8 formed in the longitudinal direction, thin ribs 51. Ink is then filled in through the hollow needle until the membrane 18 is completely turned inside out. So that the container be used in the plotter, whereby when inserting in Plotter permanently installed hollow needles automatically stopper 10 pierce and ensure connection.

Die beschriebene Ausbildung ermöglicht ein sehr hohes Fassungsvermögen des Tintenbehälters. Die radiale Pressung des Wulstes 20 und seine Grundrissform aus zwei Halbkreisbogen und zwei geradlinigen Abschnitten ergibt eine sichere Abdichtung. Weil der Wulst 20 von oben durch den unteren Rand der Innenwand 36 in die Nut eingepresst ist, kann sich dieser Wulst auch bei Schlägen auf den Deckel 3 während des Transportes nicht aus der Nut 17 lösen. Die Kombination des Tinten-Vorratsbehälters mit der Kammer 26 für Resttinte ergibt eine einfache und sichere Bedienung des Plotters, weil automatisch bei jedem Behälterwechsel auch wieder eine frische Resttintenkammer mit unverbrauchtem Saugkörper eingesetzt wird. Durch die Neigung der Böden 7 sowie die Rippen 51 kann der Tintenvorrat nahezu bis zum letzten Rest aufgebraucht werden. Die Platte 23 hat den Vorteil, dass sich die Membran 18 gleichmässiger nach unten umstülpt und vorzeitige Leeranzeigen vermieden werden. Die Schnappverbindung zwischen Deckel 3 und Unterteil 2 ist eine besonders wirtschaftliche Lösung. Die Materialpaarung PP und NBR eignet sich für viele Tintenarten, insbesondere auch für Tinten auf Mineralölbasis, welche zum Beispiel eingesetzt werden für piezoelektrische Druckköpfe. Der Behälter kann sehr dünnwandig, also kostengünstig hergestellt werden.The training described enables a very high capacity the ink tank. The radial pressure of the bead 20 and its ground plan form of two semicircular arches and two rectilinear ones Sections provides a secure seal. Because the Bead 20 from above through the lower edge of the inner wall 36 in the If the groove is pressed in, this bulge can also become impacted on the cover 3 during transport not out of the groove 17 to solve. The combination of the ink reservoir with the chamber 26 for residual ink results in simple and safe operation of the plotter, because automatically every time you change containers again a fresh waste ink chamber with unused absorbent is used. Due to the inclination of the floors 7 and the Ribs 51, the ink supply can be used up almost to the last rest become. The plate 23 has the advantage that the Diaphragm 18 turned down more evenly and prematurely Blank ads can be avoided. The snap connection between Lid 3 and lower part 2 is a particularly economical solution. The material pairing PP and NBR is suitable for many types of ink, especially also for mineral oil based inks, which can be used for example for piezoelectric printheads. The container can be very thin-walled, so inexpensive getting produced.

Statt der Rippen 51 können in der Wanne 4 auch Nuten oder Rillen eingeformt sein. Die Rippen bzw. die Rillen können auch an der Membran 18 angeformt sein. Der Deckel 3 kann auf den Unterteil 2 auch angepresst oder aufgeschweisst sein.Instead of the ribs 51, grooves or grooves can also be provided in the tub 4 be molded. The ribs or the grooves can also on the Membrane 18 may be formed. The lid 3 can be on the lower part 2 also be pressed or welded on.

Claims (10)

  1. An ink container for an inkjet printer or plotter, comprising a housing (1) having a bottom part (2) with a trough (4), wherein a peripheral groove (17) extends around the periphery of the top edge (16) of the trough (4), and wherein a first plug (10) is inserted in the bottom (7) of the trough (4) for insertion of a hollow needle of the printer or plotter, has an elastomeric membrane (18) in the form of a trough which at the edge has a bead (20) inserted with radial pressure into the groove (17), and a cover (3) which is placed on the bottom part (2) and has an inner wall (36), the bottom edge of which is pressed on the bead (20).
  2. A container according to claim 1, wherein the bottom part (2) additionally has a chamber with a second plug (10), which is filled with an absorbent material (28), more particularly cellulose, to absorb residual ink.
  3. A container according to claim 1 or 2, wherein the groove (17) in plan view consists of two arcuate portions and two rectilinear portions connecting the same.
  4. A container according to any one of claims 1 to 3, wherein the cover (3) is snapped or pressed on to the bottom part (2).
  5. A container according to any one of claims 1 to 4, wherein a plate (23) fixed on the membrane (18) is placed on the middle part of the membrane (18).
  6. A container according to any one of claims 1 to 5, wherein a lever (39) is mounted pivotally in the cover (3), the free end of which lever bears on the membrane (18) or plate (23) and which is connected to an indicator element (40) which projects beyond the housing (1) when the ink container is empty.
  7. A container according to any one of claims 1 to 6, wherein the first plug (10) has a blind hole (11) on the inside.
  8. A container according to any one of claims 1 to 7, wherein the cover (3) has a releasable catch element (45) for engagement in the printer or plotter.
  9. A container according to any one of claims 1 to 8, wherein at least one rib (51) or groove is formed on the trough (4) or on the membrane (18) and extends from the top edge (16) as far as the first plug (10).
  10. A container according to any one of claims 1 to 9, wherein the membrane (18) consists of NBR.
EP98810176A 1997-03-17 1998-03-03 Ink cartridge for an ink jet printer or plotter Expired - Lifetime EP0865925B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19710970A DE19710970C2 (en) 1997-03-17 1997-03-17 Ink tank for an inkjet printer or plotter
DE19710970 1997-03-17

Publications (2)

Publication Number Publication Date
EP0865925A1 EP0865925A1 (en) 1998-09-23
EP0865925B1 true EP0865925B1 (en) 2001-12-19

Family

ID=7823610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810176A Expired - Lifetime EP0865925B1 (en) 1997-03-17 1998-03-03 Ink cartridge for an ink jet printer or plotter

Country Status (4)

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US (1) US5984461A (en)
EP (1) EP0865925B1 (en)
CA (1) CA2232394A1 (en)
DE (2) DE19710970C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19943947C2 (en) * 1999-09-14 2003-07-17 Artech Gmbh Design & Prod Ink cartridge for an inkjet printing system
JP2002254673A (en) * 2000-12-25 2002-09-11 Seiko Epson Corp Ink cartridge for ink jet recorder

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162501A (en) * 1977-08-08 1979-07-24 Silonics, Inc. Ink supply system for an ink jet printer
DE8024472U1 (en) * 1980-09-12 1980-12-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen INK RESERVOIR FOR INK WRITING DEVICES
JPS58194550A (en) * 1982-05-10 1983-11-12 Canon Inc Ink cassette for multicolor ink jet printer
DE3238063A1 (en) * 1982-10-14 1984-04-19 Olympia Werke Ag, 2940 Wilhelmshaven Interchangeable container with an ink reservoir chamber for an ink printing unit
US4677447A (en) * 1986-03-20 1987-06-30 Hewlett-Packard Company Ink jet printhead having a preloaded check valve
JP2611257B2 (en) * 1987-09-17 1997-05-21 セイコーエプソン株式会社 ink cartridge
DE8712728U1 (en) * 1987-09-21 1988-10-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE69214512T2 (en) * 1991-05-27 1997-03-20 Seiko Epson Corp Ink cartridge for an ink jet recording device
CH687969A5 (en) * 1992-07-24 1997-04-15 Huber+Suhner Ag Faserverstaerkte membrane.
JP3417434B2 (en) * 1995-01-05 2003-06-16 セイコーエプソン株式会社 Ink cartridge for inkjet printer
JP3251845B2 (en) * 1995-04-17 2002-01-28 キヤノン株式会社 Liquid container for applying negative pressure, method for manufacturing the container, ink jet cartridge integrating the container with an ink jet recording head, and ink jet recording apparatus
EP0745481A3 (en) * 1995-05-31 1998-04-01 Hewlett-Packard Company Ink-jet swath printer with auxiliary ink reservoir
DE19545775C2 (en) * 1995-12-07 1999-03-25 Pelikan Produktions Ag Liquid cartridge, in particular an ink cartridge for a print head of an ink jet printer
US5727878A (en) * 1996-10-17 1998-03-17 Cdf Corporation Liner for a mixing container and an assembly and method for mixing fluid components

Also Published As

Publication number Publication date
US5984461A (en) 1999-11-16
DE19710970C2 (en) 2000-08-10
DE59802491D1 (en) 2002-01-31
CA2232394A1 (en) 1998-09-17
EP0865925A1 (en) 1998-09-23
DE19710970A1 (en) 1998-10-01

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