EP1375162B1 - Réservoir d'encre pour jet d'encre - Google Patents

Réservoir d'encre pour jet d'encre Download PDF

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Publication number
EP1375162B1
EP1375162B1 EP20030076946 EP03076946A EP1375162B1 EP 1375162 B1 EP1375162 B1 EP 1375162B1 EP 20030076946 EP20030076946 EP 20030076946 EP 03076946 A EP03076946 A EP 03076946A EP 1375162 B1 EP1375162 B1 EP 1375162B1
Authority
EP
European Patent Office
Prior art keywords
shell
casing
bag
front wall
shells
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
EP20030076946
Other languages
German (de)
English (en)
Other versions
EP1375162A2 (fr
EP1375162A3 (fr
Inventor
Maurice J.J. Haan
Mark P.J. Pinckaers
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Technologies BV
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 Oce Technologies BV filed Critical Oce Technologies BV
Priority to EP20030076946 priority Critical patent/EP1375162B1/fr
Publication of EP1375162A2 publication Critical patent/EP1375162A2/fr
Publication of EP1375162A3 publication Critical patent/EP1375162A3/fr
Application granted granted Critical
Publication of EP1375162B1 publication Critical patent/EP1375162B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner 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
    • B41J2/17553—Outer structure

Definitions

  • the invention relates to an ink tank comprising a casing having a front wall formed with a coupling, and a bag accommodated in said casing and connected to said coupling.
  • ink jet printers comprise an ink tank that has a comparatively large volume and is arranged stationarily in the frame of the printer and is connected to a movable ink jet device through a flexible tube.
  • ink supply to the ink jet device is achieved either by sucking ink out of the tank or by supplying air into the space inside of the casing but outside of the bag, so that the bag is collapsed and the ink is squeezed out.
  • the supply of ink from the tank to the ink jet device may be assisted by gravitational forces.
  • ink supply might be achieved through gravitational forces alone, provided that the casing can be vented.
  • the bag prevents the ink from leaking out of the casing and/or from being dried out through contact with the air in the casing, whereas the casing prevents the bag from being damaged or squeezed and facilitates the handling of the ink tank.
  • An example of an ink tank of this type is described in US-B-6,264,318 .
  • an ink tank according to the preamble of claim 1 having an ink receiving bag.
  • the bag is inserted between a lower and an upper cartridge case, and an ink take-out tube of the ink receiving bag is positioned in recesses of the cartridge cases between the cartridge cases.
  • the ink receiving bag is connected to the cartridge cases through arm-shaped mounting and fixing members integrally molded with a rigid member which is thermally welded to the ink receiving bag, and the cartridge cases are welded together.#
  • JP 05 345423 A shows an ink cartridge comprising a rubber plug for ink supply interposed between an upper and a lower case.
  • US 6 161 927 A shows an ink jet printer cartridge having a foam insert for absorbing and retaining ink.
  • the ink tank according to the invention comprises a first shell including said front wall, and a second shell welded to the first shell.
  • the coupling penetrates the front wall, the first shell includes said front wall, and the first shell has an open end opposite to the front wall.
  • a method of manufacturing this ink tank is defined in claim 9.
  • the first shell has an open end opposite to the front wall, it is possible to mold the coupling in the front wall, even when this coupling has a rather complicated structure, without causing any problems in withdrawing the molded shell from the mold. This greatly facilitates the manufacture of the casing formed with the coupling.
  • the bag may easily be connected to the coupling which is accessible through the open end of the first shell. Since the casing is completed and closed-off by welding the two shells together, with the second shell being fitted over the rear end of the bag, it is not necessary to provide any additional means for closing the casing.
  • the resulting ink tank has an integrated structure and cannot be re-opened, so that it is not possible to get access to the interior of the casing and to manipulate the bag. Since the two shells of the casing may be molded in almost any desired shape, it is possible to provide an ink tank which has an appellant design and satisfies the practical needs.
  • a supply port for compressed air may preferably be molded in the second shell of the casing.
  • the two shells may be welded together by spot-welding, so that minor gaps, which may serve as vent holes, remain at the seam between the two shells.
  • the bag is preferably accommodated in the casing in a U-shaped configuration, with both lateral portions of the bag being bent upwardly.
  • a wall-shaped collapsion induction fitment may be provided at the top wall of the first shell so as to depend into the interior of the casing. Then, when the bag is expanded, its top wall will fit around this fitment, so that the bag retains its U-configuration even in the expanded state, although it then almost fills the entire volume of the casing. When the bag collapses, it will reliably retain the U-shaped configuration which it had already in the expanded state.
  • the bag Since the expansion and collapsion behaviour of the bag is controlled by the walls of the casing and, as the case may be, by the collapsion induction fitment, the bag may be filled and emptied multiple times without any need for getting access to the interior of the casing, once the bag has been accommodated in the casing.
  • the ink tank shown in figure 1 has a box-like casing 10 made of synthetic resin.
  • the casing comprises a first shell 12 and a second shell 14 which are both obtained through injection molding and are fitted together at a seam 16 which passes essentially vertically through the side walls 18 of the casing and bisects the casing approximately to two halves.
  • first and second shells 12, 14 are formed with mating flanges 20 which extend along the seam 16 and are engaging each other in the plane of the seam 16.
  • These flanges 20 serve to improve the rigidity of the side walls 18 and each have two outwardly projecting ears 22 which are fixed to one another by spot-welding so as to integrate the two shells 12, 14 to an integral structure.
  • the first shell 12 has guide rails 24 projecting from its top and bottom surfaces. These guide rails 24 serve to guide the casing 10 when the same is inserted into a socket (not shown) of an ink jet printer in order to connect the ink tank to the ink supply system of the printer.
  • the rear wall 26 of the casing is provided with a lens-shaped depression 28.
  • the casing 10 In order to disengage the casing 10 from the socket of the printer, the casing 10 must be pushed forwardly and upwardly. To this end, a user may engage his finger into the depression 28.
  • the second shell 14 On the top side, the second shell 14 has roof-shaped portion 30 which is limited on the top side by an upwardly sloping wall 32 and a downwardly sloping wall 34.
  • a shallow rectangular recess 36 in the upwardly sloping wall 32 is intended for accommodating a tag which may be used for example for indicating the type and colour of the ink contained in the tank.
  • the casing 10 accommodates a bag 38 made of flexible liquid-tight material and filled with ink.
  • a spout 40 formed in the front lower edge of the bag 38 is connected to a coupling 42 which penetrates a front wall 44 of the first shell 12 and has been molded integrally with the first shell.
  • the coupling 42 connects to the ink supply system of the printer, so that the ink may be withdrawn from the bag 38. This will cause the bag 38 to collapse, and since the seam 16 is not air-tight, the interior of the casing 10 is vented through minor gaps formed at the seam 16.
  • the first shell 12 is formed with an internal wall 46 which depends from the top wall into the interior of the casing and is arranged in a longitudinal median plane of the casing.
  • the wall 46 forms a fold in the bag 38, so that the lateral portions of the bag 38 are bent upwardly around the wall 46.
  • the bag collapses into a sheet-like configuration, and the wall 46 induces the collapsion of the bag in such a manner that it will retain a U-shaped configuration with the lateral portions of the bag 38 being bent upwardly.
  • the bag 38 is refilled with ink through the coupling 42, the bag is expanded again so that it fills the interior of the casing 10 around the wall 46.
  • Coupling 42 comprises a valve mechanism that prevents leaking out of ink when bag 38 is filled with ink and enables the bad 38 to be refilled again with ink.
  • the coupling only has one connection for ink and due to the construction of the ink tank and casing no extra coupling for in or outlet of air is needed.
  • the downwardly sloping wall 34 of the roof-shaped portion 30 is formed integrally with the first shell 12, so that the top leg of the seam 16 extends along the top corner between the walls 32 and 34.
  • the second shell 14 has an open end facing towards the front side of the casing 10 without forming any undercuts, so that the second shell may readily be removed from the mold in the injection molding process.
  • the first shell 12 is flaring towards an open end opposite to the front wall 44.
  • the bag 38 is inserted into the first shell 12 from the open rear end thereof and is connected to the coupling 42. Then, the second shell 14 is fitted over the projecting rear end of the bag 38, as is shown in figure 3 . Finally, the shells 12, 14 are fixedly connected with one another by spot welding at the ears 22, e.g. by means of an ultrasonic welding tong.

Landscapes

  • Ink Jet (AREA)
  • Packages (AREA)

Claims (12)

  1. Réservoir d'encre comportant un boîtier (10) ayant une paroi frontale (44) et un sac (38) logé dans ledit boîtier (10) et raccordé à un mécanisme d'accouplement (42), dans lequel le boîtier (10) est constitué d'une première coque (12) et d'une seconde coque (14) soudée à la première coque (12), caractérisé en ce que la paroi frontale (44) est formée avec ledit mécanisme d'accouplement (42) qui pénètre dans la paroi frontale (44), en ce que la première coque (12) contient ladite paroi frontale (44) et en ce que la première coque (12) a une extrémité ouverte opposée à la paroi frontale (44).
  2. Réservoir d'encre selon la revendication 1, dans lequel le boîtier (10) présente une configuration analogue à celle d'une boîte et les première et seconde coques (12, 14) sont assemblées au niveau d'une jonction (16) qui passe par une partie centrale des parois latérales (18) du boîtier dans un plan essentiellement parallèle à la paroi frontale (44).
  3. Réservoir d'encre selon la revendication 2, dans lequel chacune des première et seconde coques (12, 14) comporte une bride (20) s'étendant le long de la dite jonction (16).
  4. Réservoir d'encre selon la revendication 3, dans lequel les première et seconde coques (12, 14) sont soudées par points au niveau des brides (20).
  5. Réservoir d'encre selon l'une quelconque des revendications précédentes, dans lequel la seconde coque (14) a une partie supérieure (30) en forme de toit délimitée par une paroi (32) inclinée vers le haut d'un seul tenant avec la seconde coque (14) et une paroi (34) inclinée vers le bas d'un seul tenant avec la première coque (12) et fait saillie à partir d'une extrémité arrière de sa paroi supérieure.
  6. Réservoir d'encre selon l'une quelconque des revendications précédentes, dans lequel la première coque (12) comporte une paroi interne (46) qui fait saillie vers le bas depuis la paroi supérieure jusqu'à l'intérieur du boîtier et est positionnée dans un plan médian longitudinal du boîtier.
  7. Réservoir d'encre selon l'une quelconque des revendications précédentes, dans lequel les première et seconde coques (12, 14) sont des pièces moulées par injection.
  8. Imprimante à jet d'encre contenant un réservoir d'encre selon l'une quelconque des revendications 1 à 7 précédentes.
  9. Procédé de fabrication d'un réservoir d'encre comportant un boîtier (10) ayant une paroi frontale (44) et un sac (38) logé dans ledit boîtier (10), ledit procédé comprenant les étapes suivantes :
    - mouler une première coque (12) et une seconde coque (14) ; et
    - souder les première et seconde coques (12, 14) ensemble,
    caractérisé en ce que dans l'étape de moulage de la première coque (12) et de la seconde coque (14), la première coque (12) comporte ladite paroi frontale (44) à l'intérieur de laquelle un mécanisme d'accouplement (42) est formé et une extrémité ouverte opposée à la paroi frontale, le mécanisme d'accouplement (42) pénétrant dans la paroi frontale (44) ;
    caractérisé en outre par les étapes suivantes :
    - raccorder le sac (38) au mécanisme d'accouplement (42), de manière que la partie arrière du sac déborde de l'extrémité ouverte de la première coque (12) ; et
    - ajuster la seconde coque (14) sur la partie saillante du sac (38) ; avant de souder ensemble la première et la seconde coques (12, 14).
  10. Procédé selon la revendication 9, dans lequel les première et seconde coques (12, 14) sont soudées ensemble par soudage par ultrasons.
  11. Procédé selon la revendication 9 ou 10, dans lequel les première et seconde coques (12, 14) sont soudées ensemble par soudage par points.
  12. Procédé de remplissage d'un sac d'encre (38) dans un boîtier (10), dans lequel le sac (38) est logé dans le boîtier (10) comportant une paroi frontale (44) formée avec un mécanisme d'accouplement (42) raccordé au sac (38), ledit mécanisme d'accouplement (42) pénétrant dans la paroi frontale (44), dans lequel le boîtier comporte en outre une première coque (12) incluant ladite paroi frontale (44) et une seconde coque (14) soudée à la première coque (12) selon une configuration analogue à celle d'une boîte et les coques (12, 14) sont assemblées au niveau d'une jonction (16) qui passe par une partie centrale des parois latérales (18) du boîtier dans un plan essentiellement parallèle à la paroi frontale (44), où chacune des première et seconde coques (12, 14) comporte au moins une bride (20) s'étendant le long de la dite jonction (16) et où les coques (12, 14) sont soudées par points au niveau de ces brides, et dans lequel l'encre est introduite du conteneur extérieur dans le sac (38) par le mécanisme d'accouplement (42) et l'air présent à l'intérieur du boîtier (10) est expulsé par l'intermédiaire de ladite jonction (16), moyennant quoi la pression d'air à l'intérieur du boîtier (10) en dehors du sac (38) est maintenue en équilibre avec la pression d'air en dehors du boîtier.
EP20030076946 2002-06-28 2003-06-24 Réservoir d'encre pour jet d'encre Expired - Lifetime EP1375162B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030076946 EP1375162B1 (fr) 2002-06-28 2003-06-24 Réservoir d'encre pour jet d'encre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02078188 2002-06-28
EP02078188 2002-06-28
EP20030076946 EP1375162B1 (fr) 2002-06-28 2003-06-24 Réservoir d'encre pour jet d'encre

Publications (3)

Publication Number Publication Date
EP1375162A2 EP1375162A2 (fr) 2004-01-02
EP1375162A3 EP1375162A3 (fr) 2007-03-07
EP1375162B1 true EP1375162B1 (fr) 2008-09-17

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Family Applications (1)

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EP20030076946 Expired - Lifetime EP1375162B1 (fr) 2002-06-28 2003-06-24 Réservoir d'encre pour jet d'encre

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EP (1) EP1375162B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022115378B3 (de) 2022-06-21 2023-07-20 Canon Production Printing Holding B.V. Vorrichtung, Tintendrucksystem und Verfahren zur Ermittlung eines Tintenleerstandes eines Tintenbehälters

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2633875B2 (ja) * 1987-11-20 1997-07-23 キヤノン株式会社 インクカートリッジ
JPH05345423A (ja) * 1992-06-16 1993-12-27 Canon Inc インクカートリッジ
JPH10250104A (ja) * 1997-03-12 1998-09-22 Seiko Epson Corp インクジェット式記録装置用インクカートリッジ、及びその製造方法
US6264318B1 (en) 1999-02-10 2001-07-24 Fuji Xerox Co., Ltd. Ink-jet recording apparatus and ink storing device
JP3767334B2 (ja) * 2000-06-21 2006-04-19 セイコーエプソン株式会社 記録装置用インクカートリッジ
JP2001270133A (ja) * 2000-01-20 2001-10-02 Seiko Epson Corp インクジェット記録装置
US6161927A (en) * 2000-02-24 2000-12-19 Lexmark International, Inc. Ink jet printer cartridge with press-on lid
US6250751B1 (en) * 2000-03-28 2001-06-26 Lexmark International, Inc. Ink jet printer cartridge manufacturing method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022115378B3 (de) 2022-06-21 2023-07-20 Canon Production Printing Holding B.V. Vorrichtung, Tintendrucksystem und Verfahren zur Ermittlung eines Tintenleerstandes eines Tintenbehälters

Also Published As

Publication number Publication date
EP1375162A2 (fr) 2004-01-02
EP1375162A3 (fr) 2007-03-07

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