EP1275509B1 - Cartouche d'encre comportant une chambre vide - Google Patents

Cartouche d'encre comportant une chambre vide Download PDF

Info

Publication number
EP1275509B1
EP1275509B1 EP02013465A EP02013465A EP1275509B1 EP 1275509 B1 EP1275509 B1 EP 1275509B1 EP 02013465 A EP02013465 A EP 02013465A EP 02013465 A EP02013465 A EP 02013465A EP 1275509 B1 EP1275509 B1 EP 1275509B1
Authority
EP
European Patent Office
Prior art keywords
ink
chamber
ink cartridge
empty
lid
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
EP02013465A
Other languages
German (de)
English (en)
Other versions
EP1275509A2 (fr
EP1275509A3 (fr
Inventor
Tobias Werdenberg
Philippe G. Locher
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 EP1275509A2 publication Critical patent/EP1275509A2/fr
Publication of EP1275509A3 publication Critical patent/EP1275509A3/fr
Application granted granted Critical
Publication of EP1275509B1 publication Critical patent/EP1275509B1/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

Definitions

  • the invention relates to an ink cartridge for an ink jet printer, comprising a housing having longitudinal walls and a lid, the longitudinal walls having a taper between their respective upper end and their respective lower end.
  • an ink cartridge generally has a cartridge housing with more than one chamber, wherein in the chambers, a porous material for storing the ink is provided.
  • the cartridge housing has a bottom plate, side walls, partitions and a lid. Base plate, side walls and partitions are formed as one-piece plastic injection molded part. Side walls and bottom plate can be designed both planar and preferably three-dimensionally structured.
  • Such ink cartridges are known in the art.
  • a sponge or a porous medium is usually used to create a certain negative pressure in the ink chamber.
  • Such sponges are usually produced by a foaming process and then thermally embossed into plates or obtained by a cutting process from a large-volume foam block. The sponges to be inserted into the individual cartridges are then punched out of these plates.
  • the interior due to the taper of the side walls, or their three-dimensional structure can not be completely filled by a punched sponge of the same thickness. If, nevertheless, such a plate-shaped sponge were used, the result would be cavities in the cartridge, through which ink could escape from the air bore. Thus, there is a risk of ink loss and contamination.
  • a sponge is punched from a plate whose thickness is greater than the width of the ink chamber.
  • the sponge is compressed very much by the longitudinal walls.
  • this has the disadvantage that a considerable pressure is exerted on the cartridge walls.
  • sponge assembly inside the cartridge can result in the formation of unwanted voids where ink accumulates.
  • the invention is therefore an object of the invention to provide an ink cartridge of the type described, which can be produced easily and inexpensively in terms of production, without having the mentioned disadvantages of the prior art.
  • the ink cartridge according to the invention comprises a housing with longitudinal walls and a lid, wherein the longitudinal walls of the housing between their respective upper end and their respective lower end have a taper, so that the housing of the ink cartridge is tapered, wherein inside the ink cartridge partitions are formed, which delimiting a disk-shaped ink chamber or a plurality of disk-shaped ink chambers, and wherein at least one empty chamber is present next to the ink chamber or the ink chambers.
  • empty chamber in the context of the invention means a chamber which does not serve as an ink reservoir.
  • the empty chamber essentially comprises the area adjacent to the disc-shaped ink chamber (s) between one of the partitions and one of the longitudinal walls.
  • the two empty chambers are connected to each other via a narrow side or that the two empty chambers, for example, for reasons of stability, are further subdivided.
  • cross bracing may be provided to support the partitions.
  • the partitions By the partitions one or more disc-shaped ink chambers are formed, which allow the use of sponges of constant thickness and thus simpler geometry.
  • disk-shaped is to be understood accordingly that the ink chamber has a uniform width substantially over its entire base.
  • the sponges used in such a cartridge can be conventionally punched out of sponge sheets of constant thickness.
  • a complex and expensive adaptation of the ink storage sponges in the thickness direction can be omitted.
  • the housing may be molded or molded in a conventional manner from a plastic.
  • the partitions are preferably formed integrally with the housing, so that it does not require any additional work step to produce and use them. In this way, a total of time savings in the production of the ink cartridge according to the invention over those of the prior art. Associated with the easier sponge production is also a cost savings in the production of the sponge and thus the entire ink cartridge.
  • the maximum amount of ink to be taken from the ink cartridge according to the invention is greater than in the case of the cartridges described in the present prior art.
  • a meandering groove is formed on the upper side of the lid, one end of which opens into a ventilation opening into the interior of the housing.
  • the vent usually also serves to fill the cartridge with ink.
  • the lid is glued or welded with a foil which covers the entire groove and the ventilation opening. In this way, the interior of the cartridge is initially completely sealed. Before or after inserting the cartridge into the printer, a portion of the film is torn off so that the second end of the groove is exposed to the outside. The air entering the cartridge in this way allows the ink to be removed from the printer.
  • a suitable predetermined breaking point is preferably formed.
  • the meandering shape of the groove serves to receive ink emerging from the vent as a result of pressure fluctuations, as well as ink losses due to evaporation keep as low as possible.
  • the film may be an aluminum foil coated with a thermoplastic material or may be a laminated or unlaminated thermoplastic film.
  • the film can be attached to the lid, for example by gluing, for example with a hot melt adhesive.
  • the ventilation opening opens into the ink chamber, wherein the ink chamber is hermetically sealed against the at least one empty chamber.
  • This embodiment is particularly advantageous because the ventilation takes place directly at the desired location and because due to the hermetic seal between the empty chambers and the ink chamber no ink can get into the empty chamber. In this way, unwanted ink loss due to pressure fluctuations or evaporation is avoided.
  • the ventilation opening opens into one of the empty chambers, wherein a connecting line between this empty chamber and the ink chamber is present.
  • the empty chamber thus serves as a compensation chamber between the ink chamber and the surrounding atmosphere.
  • the connecting line is preferably formed as a groove in the lid. This ensures that ink does not spill directly from the ink chamber into the empty chamber.
  • the partitions themselves are in this case formed without an opening.
  • the connecting line forming the groove between the empty chamber and the ink chamber is formed at the top of the lid and covered by a film.
  • a film may be the same film which also covers the meandering groove of the lid, but with the difference that the groove forming the connection line must always be completely covered.
  • an absorbent material are attached, preferably in the region of the connection opening to the ink chamber, which serves to absorb the emerging as a result of pressure fluctuations ink.
  • absorbent materials such as fibrous materials, such as cotton, felt, paper or porous materials, such as sponge materials, such as portions of the porous material used as an ink reservoir come into question.
  • a housing 1 of an ink cartridge according to the invention can be seen in perspective view in FIGS. 1a and 1b.
  • the housing has a cover 2 (not visible in FIGS. 1a and 1b), which is fixedly connected to the lower part of the housing (for example by welding).
  • the housing has two longitudinal walls 3, between the upper ends 3a and the lower ends 3b each have a taper 3c is present.
  • the housing of the ink cartridge is tapered downwards.
  • the interior of the ink cartridge is divided by partitions 4.
  • the partitions 4 delimit, on the one hand, a central ink chamber 5, which has a uniform thickness over the entire length, as well as two empty chambers 6; 7th
  • the two partitions 4 extend continuously over the entire length of the housing 1. Between the ink chamber 5 and the two empty chambers 6; 7, there is no connection in the partitions 4.
  • the partitions 4 are formed here as an extension of the lower part of the longitudinal walls 3.
  • the empty chambers 6; 7 thus do not extend to the bottom of the cartridge. It is clearly visible that the ink chamber is disk-shaped, so that a sponge punched out of a single sponge plate can fill its entire interior.
  • the housing described can be closed, for example, by a cover 2, as shown in FIGS. 4 to 6.
  • a meandering groove 8 can be seen, one end 8a opens into an opening 9 into the interior of the housing.
  • the opening 9 is arranged centrally here, so that it leads directly into the ink chamber 5.
  • the second end 8b of the meandering groove is extended to a vertical arm.
  • FIG. 5 shows a cross section through the cover of FIG. 4, clearly showing the continuous ventilation opening 9 and the groove or depression 8.
  • Figs. 6 and 6a the same lid is shown in perspective from above or in perspective from below.
  • Fig. 7 the lid of a second embodiment of an ink cartridge according to the invention is shown in plan view.
  • the lower part of the housing of this second embodiment corresponds to that shown in FIGS. 1 to 3.
  • this lid is located on the top of a meandering groove 8, whose one end 8a opens into a vent opening 9.
  • the vent 9 shown here leads, unlike the previously described embodiment, in one of the empty chambers, in the present case in the right empty chamber.
  • this empty chamber communicates via the groove with the environment.
  • a connection line 10 designed as a groove can be seen in the cover 2, which connects the ink chamber to the one empty chamber.
  • the one end of the groove opens into a connecting opening 11 which leads to the empty chamber, and the other end of the connecting line 10 opens into an opening 12 which leads to the ink container leads.
  • the cover is completely or only in the region of the grooves and openings shown covered by a sealing film, which is partially indicated here by hatched lines.
  • a sealing film which is partially indicated here by hatched lines.
  • At the dotted line in the upper left corner of the lid may be formed a predetermined breaking point, through which the front end 8b of the meandering groove can be exposed.
  • connection line 10 is not formed as a groove on the top of the lid, but as a groove on the underside of the lid.
  • the connection openings 11 and 12 can be omitted in this embodiment.
  • An advantage of this embodiment is that less sealing film is consumed, since only the area of the meandering groove 8 and the ventilation opening 9 must be covered by foil.

Landscapes

  • Ink Jet (AREA)
  • Pens And Brushes (AREA)

Claims (9)

  1. Cartouche d'encre pour une imprimante à jet d'encre, comportant un boîtier (1) doté de parois longitudinales (3) et d'un couvercle (2), les parois longitudinales (3) du boîtier (1) comportant un rétrécissement (3c) entre leurs extrémités supérieures (3a) respectives et leurs extrémités inférieures (3b) respectives, de sorte que le boîtier (1) de la cartouche d'encre soit rétréci, caractérisée en ce que des cloisons de séparation (4) sont formées à l'intérieur de la cartouche d'encre, qui délimitent au moins un compartiment d'encre (5) en forme de disque pour la réception d'un matériau poreux, et en ce qu'au moins un compartiment vide (6 ; 7) est prévu à côté de l'au moins un compartiment d'encre (5).
  2. Cartouche d'encre selon la revendication 1, caractérisée en ce que l'au moins un compartiment vide (6 ; 7) est délimité vers un côté pour l'essentiel par le rétrécissement (3c).
  3. Cartouche d'encre selon l'une des revendications précédentes, caractérisée en ce que l'au moins un compartiment vide (6 ; 7) ne s'étend pas jusqu'à un fond de la cartouche d'encre.
  4. Cartouche d'encre selon l'une des revendications précédentes, caractérisée en ce qu'une rainure (8) en forme de méandres est pratiquée sur la face supérieure du couvercle (2), dont une extrémité (8a) débouche à l'intérieur du boîtier (1) dans un orifice de ventilation (9) .
  5. Cartouche d'encre selon la revendication 4, caractérisée en ce que l'orifice de ventilation (9) débouche dans le compartiment d'encre (5), le compartiment d'encre (5) étant hermétiquement étanche par rapport à l'au moins un compartiment vide (6 ; 7).
  6. Cartouche d'encre selon la revendication 4, caractérisée en ce que l'orifice de ventilation (9) débouche dans l'un des compartiments vides (6), une conduite de liaison (10) étant prévue entre ce compartiment vide (6) et le compartiment d'encre (5).
  7. Cartouche d'encre selon la revendication 6, caractérisée en ce que la conduite de liaison (10) est réalisée sous la forme d'une rainure pratiquée dans le couvercle (2).
  8. Cartouche d'encre selon la revendication 7, caractérisée en ce que la rainure constituant la conduite de liaison (10) est prévue sur la face supérieure du couvercle (2), et est recouverte d'un film.
  9. Cartouche d'encre selon l'une des revendications 6 à 8, caractérisée en ce qu'un matériau absorbant est appliqué sur le compartiment vide (6) dans la zone de l'orifice de liaison (11) vers le compartiment d'encre.
EP02013465A 2001-07-10 2002-06-14 Cartouche d'encre comportant une chambre vide Expired - Lifetime EP1275509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133465A DE10133465B4 (de) 2001-07-10 2001-07-10 Tintenpatrone mit Leerkammer
DE10133465 2001-07-10

Publications (3)

Publication Number Publication Date
EP1275509A2 EP1275509A2 (fr) 2003-01-15
EP1275509A3 EP1275509A3 (fr) 2003-08-20
EP1275509B1 true EP1275509B1 (fr) 2006-10-11

Family

ID=7691264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02013465A Expired - Lifetime EP1275509B1 (fr) 2001-07-10 2002-06-14 Cartouche d'encre comportant une chambre vide

Country Status (3)

Country Link
EP (1) EP1275509B1 (fr)
AT (1) ATE342168T1 (fr)
DE (2) DE10133465B4 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3513979B2 (ja) * 1994-09-16 2004-03-31 セイコーエプソン株式会社 インクジェットプリンタ用インクカートリッジ
US6247803B1 (en) * 1983-10-13 2001-06-19 Seiko Epson Corporation Ink jet recording apparatus and method for replenishing ink in the tank cartridge
EP0589540B1 (fr) * 1989-10-20 1997-10-01 Canon Kabushiki Kaisha Appareil à jet d'encre et cartouche avec réservoir d'encre pouvant être installée dans cet appareil
US6007191A (en) * 1993-08-19 1999-12-28 Fuji Xerox Co., Ltd. Ink supply unit
EP0640482B1 (fr) * 1993-08-23 2002-04-10 Canon Kabushiki Kaisha Cartouche d'encre échangeable
US6168266B1 (en) * 1995-09-29 2001-01-02 Canon Kabushiki Kaisha Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge
DE69733176T2 (de) * 1996-02-21 2006-02-16 Seiko Epson Corp. Tintenkartusche
JP3287791B2 (ja) * 1997-07-30 2002-06-04 キヤノン株式会社 液体収容室を有する液体収容容器への液体充填方法及び液体充填装置
EP1300248B1 (fr) * 1998-03-30 2008-10-22 Brother Kogyo Kabushiki Kaisha Cartouche d'encre et procédé de détection du volume d'encre restant

Also Published As

Publication number Publication date
DE10133465A1 (de) 2003-01-30
EP1275509A2 (fr) 2003-01-15
EP1275509A3 (fr) 2003-08-20
ATE342168T1 (de) 2006-11-15
DE10133465B4 (de) 2006-10-05
DE50208383D1 (de) 2006-11-23

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