EP2214907B1 - Cartouche d'encre destinée en particulier à une imprimante à jet d'encre - Google Patents

Cartouche d'encre destinée en particulier à une imprimante à jet d'encre Download PDF

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Publication number
EP2214907B1
EP2214907B1 EP08851980.6A EP08851980A EP2214907B1 EP 2214907 B1 EP2214907 B1 EP 2214907B1 EP 08851980 A EP08851980 A EP 08851980A EP 2214907 B1 EP2214907 B1 EP 2214907B1
Authority
EP
European Patent Office
Prior art keywords
ink
volume
capillary
opening
ink cartridge
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.)
Not-in-force
Application number
EP08851980.6A
Other languages
German (de)
English (en)
Other versions
EP2214907A1 (fr
Inventor
Daniel Sulser
René Butty
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
Original Assignee
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 EP2214907A1 publication Critical patent/EP2214907A1/fr
Application granted granted Critical
Publication of EP2214907B1 publication Critical patent/EP2214907B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J2/17556—Means for regulating the pressure in the cartridge
    • 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

Definitions

  • the invention relates to an ink cartridge, in particular for an ink jet printer, having an ink reservoir which limits a free ink volume in a first chamber and a capillary volume in a second chamber, wherein the two chambers are fluidly connected to each other, and wherein the capillary volume limiting chamber is associated with an ink outlet ,
  • Such so-called dual-chamber ink cartridges are well known, with one chamber primarily containing liquid ink and the other having an ink storage element defining a capillary volume, e.g. made of sponge or fiber material is filled. It is important, a controlled emptying of the two chambers in use of the ink cartridge, for. to ensure in an inkjet printer.
  • the removal amount from both chambers is about the same. At the beginning, about 1/4 of the ink withdrawal amount is withdrawn from the capillary volume. Then, the removal of about 1/2 of the total amount from the ink chamber or from the free ink volume limiting chamber takes place. Lastly, another 1/4 of the total amount is taken from the capillary volume.
  • the ventilation and thus pressure compensation takes place through the capillary volume. If the capillary volume is about half drained, an opening for aeration of the free ink volume limiting chamber is released by the lowered level. In this way, then this chamber can be vented through the storage element or the capillary volume.
  • the disadvantage is that two different storage materials for the capillary volume are required, namely a first large-pore upper storage material which is first discharged, and a second lower-volume storage material near the ink outlet with smaller pores. Only by this constellation ventilation of the two chambers of the ink cartridge is reliably possible.
  • the two chambers are fluidly connected, via a near-ground passage in an intermediate wall through which the two chambers are separated from each other within the ink cartridge (see GB 2268911 ).
  • the present invention has for its object to provide an ink cartridge in which one manages with a single storage material to define the capillary volume, i. with a storage material of uniform pore size. Furthermore, the pressure equalization should be facilitated by the fact that it does not have to be controlled by the capillary volume.
  • the free-ink chamber is ventilated, wherein additionally a separate ventilation of the capillary volume or the chamber delimiting the capillary volume is provided.
  • the ventilation of the free ink volume limiting chamber is carried out according to the invention by an outgoing from the top wall of the cartridge immersion tube, which has one or more very small, preferably slot-shaped openings at the immersed distal end. Due to the size of these openings, the removal time or so-called "bubble point" of the free ink volume limiting chamber can be controlled.
  • a slot-shaped opening has the further advantage compared to a hole-shaped opening that it is much less sensitive to dirt particles and accordingly more efficient with respect to the air flow rate.
  • the bubble generator according to the invention in the form of a dip tube ensures that the ventilation and consequently the emptying of the two chambers is controlled by the design of the bubble generator and not by the capillary volume or the capillary volume defining material.
  • the capillary volume is formed by a uniform material of constant pore size.
  • the solution according to the invention is characterized by a simpler and, accordingly, more cost-effective and, with regard to the emptying of the ink cartridge, a particularly functionally reliable construction.
  • dip tube defining the bubble generator extends close to the bottom wall of the ink cartridge, at least to about the height of the fluid communication between the two chambers.
  • the ventilation openings formed there are arranged one inside the other, so that an inner opening and an annular opening surrounding this outer opening is formed.
  • the latter communicates with the chamber delimiting the capillary volume via at least one air channel formed in the cover wall, while the inner central opening communicates with the bubble generator or the immersion tube defining it via a further air channel formed in the cover wall.
  • the in the FIGS. 1 . 2 or 4, 5 illustrated ink cartridge is indicated by the reference numeral 10. It comprises four side walls, namely two opposite flat side walls 11 and two opposite end walls 12, and a top wall 13 and bottom wall 14. Within the cartridge 10, two chambers are formed, namely a first chamber 17, which defines a so-called free ink volume 16, and a second Chamber 18, which limits a so-called capillary volume 15.
  • This capillary volume 15 is defined by an ink storage element in the form of an open-pore sponge or fiber material.
  • This memory element or the capillary volume 15 is associated with an ink outlet 21 on the bottom side.
  • the two chambers are separated within the cartridge by a partition 19 from each other. On the bottom side, the partition 19 has a fluid passage 20 between the two chambers 17 and 18.
  • the cover wall 13 is formed as a separate component and comprises two ventilation openings 23, 24, which are arranged one inside the other.
  • An inner ventilation opening 23 is surrounded annularly by an outer ventilation opening 24.
  • the inner ventilation opening is in fluid communication via an air duct 25 formed in the cover wall 13 with the first chamber 17 defining the free ink volume 16, while the outer ventilation opening 24 is connected to the second chamber 18 via a separate air duct 26 likewise formed in the cover wall 13 , which limits the capillary volume 15, communicates.
  • This channel opens into the second chamber 18 via an opening 27 on the underside of the top wall 13.
  • the first air channel 25 opens through an opening 28 on the underside of the top wall 13 in the first chamber 17, not directly, but via a formed as a bubble generator dip tube 29. So this extends from the bottom of the top wall 13 down into the the free ink volume 16 limiting first chamber 17 into it.
  • a formed as a bubble generator dip tube 29 At the distal end of the dip tube 29 at least one opening 30 is formed for the introduction of air bubbles in the free ink.
  • this opening in the illustrated embodiment comprises two relative to the tube longitudinal axis diametrically opposed slot openings, of which in the FIGS. 2 and 3 only one can be seen at a time.
  • the size of these slit openings 30 at the distal end of the dip tube 29 is sized so that when using the ink cartridge, the ink only after about 1/4 of the capillary volume has been consumed through this opening 30 through air sucks fine bubbles forming in the free ink volume ,
  • the bubble generator thus formed defines a capillary pressure which is less than the capillary pressure at the ink outlet 21 but greater than the capillary pressure at the capillary volume 15.
  • the capillary pressure at the ink outlet is defined by a wick of foam disposed within the ink outlet or fibrous material is defined. This wick has a higher density and thus smaller pore size than the storage material which defines the capillary volume 15.
  • the slot-shaped openings 30 are set at the distal end of the dip tube 29 so that the capillary pressure of the bubble generator to a maximum of about 150%, in particular between about 50% and 150% greater than the capillary pressure with filled capillary 15.
  • the two ventilation openings 23, 24 on the one hand and the ink outlet 21 on the other hand is still a common remove film 22 assigned. Before using the cartridge 10, this remove film is peeled off. Due to the above-described design of the two ventilation openings 23, 24 is always ensured that first the capillary volume limiting chamber 18, and only then the free ink volume limiting chamber 17 are vented. In this way, it is reduced that inadvertently ejects ink from the connected to the first chamber 17 ventilation opening 23 during pressure compensation.
  • the two aforementioned air channels 25, 26 are formed on the top of the top wall 13, in particular milled. They are closed by a cover sheet 31.
  • Measures for fixing the ink cartridge 10 within a receptacle of the inkjet printer are also formed on the side wall opposite the end wall 12 over which the remove film 22 extends. These are per se known measures that need not be described in detail here.

Landscapes

  • Ink Jet (AREA)

Claims (5)

  1. Cartouche d'encre, en particulier pour une imprimante à jet d'encre, comportant un réservoir d'encre, qui délimite un volume d'encre libre (16) dans une première chambre (17) et un volume capillaire (15) dans une deuxième chambre (18), les deux chambres (17, 18) étant en liaison fluidique l'une avec l'autre, et une sortie d'encre (21) étant affectée à la chambre (18) qui délimite le volume capillaire (15),
    caractérisé par un générateur de bulles sous la forme d'un tube plongeur (29), qui est plongé dans le volume d'encre libre (16) et peut communiquer avec l'environnement extérieur et qui, sur son extrémité distale, comporte au moins un orifice (30) pour l'introduction de petites bulles d'air, le générateur de bulles (tube plongeur 29) définissant à cet effet une pression capillaire qui est inférieure à la pression capillaire au niveau de la sortie d'encre (21), mais supérieure à la pression capillaire dans le volume capillaire (15).
  2. Cartouche d'encre selon la revendication 1, caractérisé en ce que l'orifice (30) au niveau de l'extrémité distale du tube plongeur (29) est une fente.
  3. Cartouche d'encre selon la revendication 2, caractérisé en ce qu'au niveau de l'extrémité distale du tube plongeur (29) sont réalisées au moins deux fentes (30) diamétralement opposées par rapport à l'axe longitudinal du tube.
  4. Cartouche d'encre selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la dimension dudit au moins un orifice (30) au niveau de l'extrémité distale du tube plongeur (29) est mesurée de telle sorte qu'en cours d'utilisation de la cartouche d'encre (10), seulement lorsque environ 1/4 du volume capillaire a été utilisé, l'encre aspire de l'air à travers cet orifice (30) moyennant la formation de fines bulles dans le volume d'encre libre.
  5. Cartouche d'encre selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la pression capillaire du générateur de bulles (tube plongeur 29) est supérieure, jusqu'à environ 150 % maximum, en particulier entre environ 50 % et 150 %, à la pression capillaire lorsque le volume capillaire (15) est rempli.
EP08851980.6A 2007-11-19 2008-11-18 Cartouche d'encre destinée en particulier à une imprimante à jet d'encre Not-in-force EP2214907B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007055162A DE102007055162A1 (de) 2007-11-19 2007-11-19 Tintenpatrone, insbesondere für Tintenstrahldrucker
PCT/EP2008/065725 WO2009065814A1 (fr) 2007-11-19 2008-11-18 Cartouche d'encre destinée en particulier à une imprimante à jet d'encre

Publications (2)

Publication Number Publication Date
EP2214907A1 EP2214907A1 (fr) 2010-08-11
EP2214907B1 true EP2214907B1 (fr) 2014-11-12

Family

ID=40419465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08851980.6A Not-in-force EP2214907B1 (fr) 2007-11-19 2008-11-18 Cartouche d'encre destinée en particulier à une imprimante à jet d'encre

Country Status (6)

Country Link
US (1) US20100253754A1 (fr)
EP (1) EP2214907B1 (fr)
JP (1) JP2011502835A (fr)
CN (1) CN101868355A (fr)
DE (1) DE102007055162A1 (fr)
WO (1) WO2009065814A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3078497A1 (fr) 2015-04-09 2016-10-12 Pelikan Hardcopy Production AG Cartouche d'encre destinée à être utilisée dans une imprimante à jet d'encre

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD658713S1 (en) 2010-12-24 2012-05-01 Engage Technologies Corp. Industrial printer cartridge
USD674008S1 (en) 2010-12-24 2013-01-08 Engage Technologies Corporation Industrial printer
CN103204005B (zh) 2012-01-12 2016-12-28 精工爱普生株式会社 盒以及印刷材料供应系统
WO2013105143A1 (fr) * 2012-01-12 2013-07-18 Seiko Epson Corporation Système d'alimentation de cartouche et de matériel d'impression
JP6685697B2 (ja) * 2015-10-30 2020-04-22 キヤノン株式会社 インクタンク及びインクジェット記録装置
CN109733073B (zh) * 2019-03-04 2023-12-01 珠海益捷科技有限公司 墨盒

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2100977C (fr) * 1992-07-24 2000-02-08 Noribumi Koitabashi Reservoir a encre, encre et appareil d'enregistrement a jet d'encre utilisant ce reservoir
TW373595U (en) * 1994-05-25 1999-11-01 Canon Kk An ink container and an ink jet recording apparatus using the same
CN1186196C (zh) * 2001-08-24 2005-01-26 研能科技股份有限公司 墨水匣的压力平衡方法及其装置
JP3840237B2 (ja) * 2004-06-02 2006-11-01 キヤノン株式会社 液体収納容器および該液体収納容器を用いた記録装置
CN2726881Y (zh) * 2004-09-06 2005-09-21 聂瑞权 喷墨打印机墨盒
JP4047328B2 (ja) * 2004-12-24 2008-02-13 キヤノン株式会社 液体収納容器、該容器を用いる液体供給システムおよび記録装置、並びに前記容器用回路基板
JP4735344B2 (ja) * 2005-03-28 2011-07-27 セイコーエプソン株式会社 液体収容体
US7255431B2 (en) * 2005-03-30 2007-08-14 Monitek Electronics Limited Ink cartridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3078497A1 (fr) 2015-04-09 2016-10-12 Pelikan Hardcopy Production AG Cartouche d'encre destinée à être utilisée dans une imprimante à jet d'encre

Also Published As

Publication number Publication date
DE102007055162A1 (de) 2009-05-20
EP2214907A1 (fr) 2010-08-11
WO2009065814A1 (fr) 2009-05-28
US20100253754A1 (en) 2010-10-07
CN101868355A (zh) 2010-10-20
JP2011502835A (ja) 2011-01-27

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