EP0560729B1 - Cartouche d'encre pour tête d'impression d'une imprimante à jet d'encre - Google Patents

Cartouche d'encre pour tête d'impression d'une imprimante à jet d'encre Download PDF

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Publication number
EP0560729B1
EP0560729B1 EP93810169A EP93810169A EP0560729B1 EP 0560729 B1 EP0560729 B1 EP 0560729B1 EP 93810169 A EP93810169 A EP 93810169A EP 93810169 A EP93810169 A EP 93810169A EP 0560729 B1 EP0560729 B1 EP 0560729B1
Authority
EP
European Patent Office
Prior art keywords
ink cartridge
cartridge according
casing
opening
ink
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
EP93810169A
Other languages
German (de)
English (en)
Other versions
EP0560729A2 (fr
EP0560729A3 (en
Inventor
Jürg Geissmann
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 Produktions AG
Original Assignee
Pelikan Produktions 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
Priority claimed from DE9203206U external-priority patent/DE9203206U1/de
Priority claimed from DE9300132U external-priority patent/DE9300132U1/de
Application filed by Pelikan Produktions AG filed Critical Pelikan Produktions AG
Publication of EP0560729A2 publication Critical patent/EP0560729A2/fr
Publication of EP0560729A3 publication Critical patent/EP0560729A3/de
Application granted granted Critical
Publication of EP0560729B1 publication Critical patent/EP0560729B1/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

Definitions

  • An ink cartridge according to the preamble of claim 1 and a printhead according to the preamble of claim 15 are known from IBM Technical Disclosure Bulletin Vol. 34, no. 1, June 1991, page 459 ff.
  • the ink cartridge has a housing filled with an ink-soaked foam body and on one side an opening for plugging onto a tubular socket of the print head. A small air inlet opening is arranged on the opposite side.
  • inserting the cartridge is somewhat unsafe because the position of the cartridge in the print head is undefined. It is sometimes difficult to restart the print head after replacing the cartridge.
  • the present invention has for its object to avoid the above disadvantages. This object is achieved by the combination of features of claim 1.
  • the print head 1 is only indicated schematically. It consists of a rectangular base plate 2, from which a projection 3 protrudes along a narrow side. A nozzle plate 5 is installed in the end face 4 of this projection 3.
  • the nozzle plate 5 contains a series of narrow ink channels. The pressure in these channels can be pulsed piezoelectric or thermoelectric be increased so that an ink droplet is ejected from the nozzle in question. The surface tension at the nozzle mouth then sucks the ejected ink volume out of an interior space 6 of a tubular nozzle 7 which communicates with the nozzle channels.
  • the flat end face 8 of the connector 7 is covered with a close-meshed sieve 9 and projects beyond the rear side 10 of the base plate 2.
  • a prismatic tube with four side walls 11 protrudes from the base plate 2, into which an ink cartridge 20 is inserted.
  • a sealing ring 12, shown in more detail in FIG. 5, is placed on the section of the connecting piece 7 projecting beyond the rear.
  • the elastomeric sealing ring 12, for example made of silicone rubber, is tubular and has a flat end face 13 at the front and a circumferential sealing bead 15 on the cylindrical outer circumference 14.
  • the end face 13 supports the protruding edge of the sieve 9 and protects it from tearing when the cartridge 20 is pulled out
  • the sealing bead 15 seals the connector 7 against the cartridge housing. In operation, the end face 4 is directed downward and the interior 6 is full of ink.
  • two opposite side walls 11 of the printhead 1 have coaxial bores 16.
  • the ink cartridge 20 has a plastic housing 22 consisting of a hollow body 24 which is open at the bottom in the illustration according to FIG. 2 and is closed off by a cover 26 which is sealed or glued on.
  • An end wall 28 of the housing 22 has an opening 30 with a cylindrical wall 32 for receiving the nozzle 7.
  • the sealing bead 15 seals against the wall 32.
  • the housing 22 is largely with an ink-soaked foam body 34 filled.
  • Two side walls 36 of the housing 22 have spherical cap-shaped projections 38 for snapping into the holes in the side walls 11 of the print head 1.
  • a cavity 40 is formed between the foam body 34 and the housing 22, which can be filled with air or ink.
  • a pumping element 42 protrudes into this cavity 40, in the form of a piston pump in the embodiment according to FIG.
  • a cylindrical tube 44, in which a piston 46 is guided, is formed on the cover 26.
  • the piston 46 is loaded by a spring 48 into the basic position shown in FIG. 2, in which a piston shaft 50 projects beyond the housing 22.
  • the piston 46 is shown enlarged in FIG. 3. It consists of a piston crown 52 and the stem 50 snapped onto it. An O-ring 54 is inserted between two end faces of the stem 50 and the bottom 52 and seals against the cylindrical inner wall of the tube 44. The interior of the shaft 50 is connected to the atmosphere via openings 56.
  • the piston crown 52 contains a check valve 58.
  • a pin 64 molded onto a rotationally symmetrical membrane 62 is inserted into a central bore 60.
  • the membrane 62 consists of an elastomer, for example of silicone rubber. At the periphery, it has a projecting, thin-walled, thoracic segment-shaped sealing bead 66 which seals against a flat end face 68 of the piston crown 52.
  • the check valve 58 has a very low opening or closing pressure of a few mbar, for example at most 20 mbar.
  • An opening 70 connects the outside of the membrane 62 to the interior of the shaft 50.
  • the shaft 50 of the pumping goose 42 is pressed in until ink emerges from the nozzle plate 5.
  • the print head 1 is expediently held with the nozzle plate 5 upward so that the air can escape from the space 6.
  • the interior 6 is then filled with ink and the print head 1 is ready for operation.
  • the shaft 50 is released, there is then a negative pressure of a few mbar inside the housing 22, so that no more ink can drip from the nozzle plate 5.
  • the stroke volume of the piston 46 is preferably somewhat larger than the volume of the interior 6. This space 6 can be filled with a single push in of the piston 46. However, the check valve 58 also makes it possible to repeat the pumping process if a single push in is not sufficient.
  • FIGS. 6-8 differ from those according to FIGS. 2-4 only in the design of the pumping goose 42, so that the parts identical to the embodiment according to FIGS. 2-4 are partially omitted in the illustration according to FIGS. 6-8. Analog parts have the same reference numerals, so that a detailed description of these parts is unnecessary.
  • the pump element 42 is designed as a bellows pump.
  • the pump organ 42 according to FIG. 6 has a dome-shaped, elastomeric bellows 76 with a flange 78 which is clamped between a sleeve 80 pressed into the tube 44 and an end wall 82 of the tube 44.
  • the wall 82 has an opening 84.
  • the check valve 58 which can be of the same design as that according to FIGS. 3 and 4, is inserted in the end wall 86 of the housing 22 opposite the end wall 28.
  • the bellows 76 is a bellows which is pushed onto a tubular extension 88 of the wall 82.
  • the check valve 58 is mounted here in the wall 82.
  • FIG. 8 differs from that according to FIGS. 2-4 in that the spring 48 and the check valve 58 are missing.
  • the piston 46 is pressed in two stages into the depressed position which is also shown. In a first stage, the piston is pushed in so that the O-ring 54 is still on the side of the radial opening 90 in the tube 44 facing the cover 26. This position can be determined by a not shown stop or by the outer end face 92 of the piston skirt 50 being flush with the outer face of the cover 26.
  • the opening 90 can also be formed, for example, in the end wall 86 and can be closed in the delivery state, for example by an adhesive tape.
  • the "two-phase movement" consists in pressing in the piston 46 and then detaching the adhesive tape.
  • the opening 30 of the housing 22 is also sealed by an adhesive film which is removed before the ink cartridge 20 is inserted into the print head 1.
  • the print head 1 is of the same design as that according to FIG. 1, except that the sealing ring 12 is missing.
  • the cartridge 120 of the embodiment according to FIG. 9 consists of a housing 121 with a prismatic hollow body 122 which is open on one side and has four side walls 123 and a rear wall 124 made of thermoplastic material and a cover 125 which is sealed onto the free end edge of the hollow body 121, for example ultrasonically welded on cover 125
  • the cover 125 engages with a circumferential rim 126 in a form-fitting manner in the inside of the side walls 123. Adjacent to one narrow side, the cover 125 has a bore 127 in which the connector 7 fits.
  • the cover 125 Adjacent to the opposite narrow side, the cover 125 has a small ventilation hole 128 which is connected to one another by closely inner ribs 129 on the side wall 123 formed channel 130 is aligned.
  • the channel 130 opens at the rear wall 124 into a ventilation cavity 132, which is also formed by ribs 131.
  • An open-pore foam body 135 is inserted into the housing 121 with some compression.
  • the foam is e.g. "Melamine” foam (registered trademark) or polyurethane foam.
  • Body 135 is soaked in ink.
  • an elastomeric sealing film 136 e.g. made of silicone rubber, which has the size of the inner contour of the hollow body 122 at the free edge.
  • the sealing film 136 has a circular hole 137 of smaller diameter coaxial to the bore 127. With the edge region adjacent to this hole 137, the film 136 seals the interior of the housing 121 against the end face 8 of the connector 7. In the area of the vent hole 128, the film 136 has a further recess.
  • Two opposite side walls 123 of the hollow body 122 each have a spherical cap-shaped locking projection 139.
  • the projections 139 snap into corresponding bores in the side walls 11 of the print head 1.
  • two opposite side walls 123 of the housing 121 have molded-on grip cams 140 which make it easier for the cartridge 120 to be pulled out of the print head 1.
  • the bore 127 and the ventilation hole 128 are closed with an adhesive strip or a sealing film 141 for transport and storage. This will clean the cartridge 120 guaranteed.
  • the film 141 closes both openings at the same time, it is avoided that the ventilation hole 128 could remain closed due to incorrect operation when inserting the cartridge 120, as a result of which safe operation of the print head 1 would not be possible. For this reason, the arrangement of the ventilation hole 128 in the cover 125 is advantageous.
  • the channels 130, 132 formed by the ribs 129, 131 nevertheless ensure that the foam body 135 is exposed to atmospheric pressure as desired from the opposite side of the bore 127.
  • the nozzle 7 compresses the foam body 135 locally and therefore at the same time presses an ink supply into the interior 6 of the nozzle 7. This ensures reliable operation of the print head 1 immediately after the cartridge 20 has been inserted. Because the relatively large-area sieve 9 of the nozzle 7 presses directly onto the foam body 135, the ink supply is guaranteed until the end of the ink supply. The contact pressure of the foam body 135 against the screen 9 of the connector 7 can be ensured by a positive engagement of the locking cams 139 in the locking bores of the print head 1.

Landscapes

  • Ink Jet (AREA)

Claims (15)

  1. Cartouche d'encre pour une tête d'impression d'une imprimante à jet d'encre, comprenant un boîtier fermé de tous côtés (22, 121) avec une paroi frontale (28, 125), qui présente une première ouverture (30, 127) pour recevoir un ajutage tubulaire (7) à face avant plate (8) de la tête d'impression (1), et une seconde ouverture (80, 90, 128) plus petite pour l'amenée d'air, le boîtier contenant un corps cellulaire imbibé d'encre (34, 135), caractérisée en ce que le boîtier (22, 121) comprend des éléments d'encliquetage (38, 139), destinés à s'enclencher dans des moyens d'encliquetage de la tête d'impression (1), et en ce qu'il est en outre prévu un organe de pompage (42) afin de produire une pression interne au niveau du côté du boitier (22) opposé à la paroi frontale (28).
  2. Cartouche d'encre selon la revendication 1, dans laquelle l'organe de pompage (42) est incorporé dans le boîtier (22).
  3. Cartouche d'encre selon la revendication 2, dans laquelle l'organe de pompage (42) comprend un clapet de non-retour (58) qui permet un passage libre de l'air vers une cavité (40), située entre le corps cellulaire (34) et une paroi (86), située en face de la paroi frontale (28) du boîtier (22), mais qui interdit le passage d'air dans le sens inverse.
  4. Cartouche d'encre selon la revendication 3, dans laquelle la pression d'ouverture ou de fermeture du clapet de non-retour (58) est inférieure à 20 mbars.
  5. Cartouche d'encre selon l'une des revendications 1 à 4, dans laquelle l'organe de pompage (42) est réalisé sous la forme d'une pompe à piston.
  6. Cartouche d'encre selon la revendication 5, dans laquelle le piston (46) de l'organe de pompage (42) est précontraint, par un ressort (48), dans une position initiale dans laquelle un corps de piston (50) dépasse du boitier (22).
  7. Cartouche d'encre selon les revendications 3 et 5, dans laquelle le clapet de non-retour (58) est incorporé dans le piston (46).
  8. Cartouche d'encre selon l'une des revendications 1 à 4, dans laquelle l'organe de pompage (42) comprend un soufflet (76) en élastomère.
  9. Cartouche d'encre selon l'une des revendications 1 à 8, dans laquelle le boîtier (121) consiste en un corps creux (122) prismatique et ouvert d'un côté, avec quatre parois latérales (123), la paroi frontale (125) étant fixée à l'extrémité libre, tandis qu'il est prévu une feuille d'élastomère (136), qui est insérée entre la paroi frontale (125) et le corps cellulaire (135) et qui présente, de façon coaxiale à la première ouverture (127), un trou (137) de plus petit diamètre, de telle manière que, lorsque la cartouche (120) est en place, la zone de bord du trou (137), dépassant au-delà du bord de l'ouverture, vienne s'appliquer contre l'ajutage (7) pour assurer l'étanchéité.
  10. Cartouche d'encre selon la revendication 9, dans laquelle la seconde ouverture (128) est située dans la paroi frontale (125) et communique, par l'intermédiaire d'un passage (130) ménagé à l'intérieur du boîtier (121), avec une cavité (132) du côté du corps cellulaire (135) opposé à la paroi frontale (125).
  11. Cartouche d'encre selon la revendication 10, dans laquelle le passage (130) et la cavité (132) sont chacun constitués par deux nervures voisines (129, 131) contre la face interne du boîtier (121).
  12. Cartouche d'encre selon l'une des revendications 1 à 11, dans laquelle les deux ouvertures (127, 128) sont obturées, pour l'expédition, au moyen d'une bande adhésive ou d'une feuille de scellement (141).
  13. Cartouche d'encre selon l'une des revendications 1 à 12, dans laquelle les éléments d'encliquetage (139) sont réalisés sous la forme de saillies sur des parois latérales opposées (123) du boîtier (121).
  14. Cartouche d'encre selon l'une des revendications 1 à 13, dans laquelle deux parois latérales opposées (123) du boîtier (121) présentent, à l'extrémité distante de la paroi frontale (125), des saillies de préhension (140), destinées à faciliter l'extraction de la cartouche (120) hors de la tête d'impression (1).
  15. Tête d'impression avec une cartouche d'encre selon l'une des revendications 1 à 14, comportant un ajutage tubulaire (7) à face avant plate (8), tandis qu'il est prévu un anneau d'étanchéité (12) en élastomère, posé sur l'ajutage tubulaire (7) et assurant l'étanchéité contre une paroi cylindrique (32) de l'ouverture (30), caractérisée en ce que l'anneau d'étanchéité (12) est réalisé en forme de manchon, en ce qu'il a une face avant (13) plate et en ce qu'il présente tout autour de sa surface extérieure cylindrique, un bourrelet d'étanchéité (15).
EP93810169A 1992-03-10 1993-03-05 Cartouche d'encre pour tête d'impression d'une imprimante à jet d'encre Expired - Lifetime EP0560729B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9203206U DE9203206U1 (de) 1992-03-10 1992-03-10 Tintenpatrone für einen Druckkopf eines Ink Jet Printers
DE9203206U 1992-03-10
DE9300132U 1993-01-07
DE9300132U DE9300132U1 (de) 1993-01-07 1993-01-07 Tintenpatrone für einen Druckkopf eines Ink-Jet-Printers

Publications (3)

Publication Number Publication Date
EP0560729A2 EP0560729A2 (fr) 1993-09-15
EP0560729A3 EP0560729A3 (en) 1994-06-22
EP0560729B1 true EP0560729B1 (fr) 1996-05-15

Family

ID=25959256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810169A Expired - Lifetime EP0560729B1 (fr) 1992-03-10 1993-03-05 Cartouche d'encre pour tête d'impression d'une imprimante à jet d'encre

Country Status (4)

Country Link
EP (1) EP0560729B1 (fr)
AT (1) ATE138015T1 (fr)
DE (1) DE59302549D1 (fr)
ES (1) ES2087698T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6059403A (en) * 1995-12-21 2000-05-09 Pelikan Produktions Ag Liquid cartridge and print head for an ink-jet printer
US6074049A (en) * 1994-04-06 2000-06-13 Pelikan Produktions Ag Ink cartridge for a printing head of an inkjet printer

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2272160C (fr) * 1992-07-31 2003-10-14 Canon Kabushiki Kaisha Contenant pour liquide dans un appareil enregistreur
US6170939B1 (en) 1992-07-31 2001-01-09 Canon Kabushiki Kaisha Liquid storing container for recording apparatus
JP3229444B2 (ja) * 1993-07-06 2001-11-19 ブラザー工業株式会社 インク供給装置及びラッピングインク含浸フォーム
US5619239A (en) * 1993-11-29 1997-04-08 Canon Kabushiki Kaisha Replaceable ink tank
US5949461A (en) * 1994-02-18 1999-09-07 Nu-Kote Imaging International, Inc. Ink refill bottle
CH689616A5 (de) * 1994-03-16 1999-07-15 Pelikan Produktions Ag Mehrfarben-Druckkopf fuer einen Ink-Jet-Printer
TW373595U (en) * 1994-05-25 1999-11-01 Canon Kk An ink container and an ink jet recording apparatus using the same
EP1203668B1 (fr) 1994-08-24 2008-10-22 Canon Kabushiki Kaisha Réservoir d'encre pour imprimante par jet d'encre, support pour le réservoir, chariot pour le support et imprimante par jet d'encre
US5663753A (en) * 1994-11-14 1997-09-02 Jetfill, Inc. Recording cartridge with replaceable liquid-containing reservoir
US5680164A (en) * 1994-11-29 1997-10-21 Hewlett-Packard Company Refill method and apparatus for ink cartridge units
DE4443290A1 (de) * 1994-12-06 1996-06-13 Eastman Kodak Co Vorrichtung zur Flüssigkeitsversorgung einer Mikrodosiervorrichtung
US5784087A (en) * 1995-04-27 1998-07-21 Owens-Illinois Closure Inc. Liquid containment and dispensing device
US5900896A (en) * 1995-04-27 1999-05-04 Hewlett-Packard Company Ink cartridge adapters
US5856839A (en) * 1995-04-27 1999-01-05 Hewlett-Packard Company Ink supply having an integral pump
DE29507743U1 (de) * 1995-05-10 1996-09-12 Pelikan Produktions Ag, Egg Druckkopf für einen Ink-Jet-Printer
US6257714B1 (en) * 1995-10-27 2001-07-10 Hewlett-Packard Company Method and apparatus for removing air from an inkjet print cartridge
DE19618986B8 (de) * 1995-10-30 2012-12-20 Pelikan Produktions Ag Tintenpatrone für einen Druckkopf eines Ink-Jet-Printers
US5917525A (en) * 1995-10-30 1999-06-29 Pelikan Produktions Ag Ink cartridge for a print head of an ink-jet printer
EP1134083B1 (fr) 1995-12-21 2004-04-07 Pelikan Hardcopy Production AG Cartouche à liquide et tête d'impression pour imprimante à jet d'encre
DE19548032C2 (de) * 1995-12-21 1997-11-20 Pelikan Produktions Ag Flüssigkeitspatrone für einen Ink-Jet-Printer
DE19920921B4 (de) * 1999-05-06 2005-03-03 Artech Gmbh Design + Production In Plastic Tintenversorgungstank für einen Tintenstrahldruckkopf
DE10135894A1 (de) 2001-07-24 2003-02-06 Pelikan Hardcopy Production Ag Vorrichtung zum Reinigen eines Druckkopfes eines Inkjet-Printers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131837U (ja) * 1983-02-23 1984-09-04 シャープ株式会社 インクジエツトプリンタのインクカ−トリツジ装置
US4785314A (en) * 1984-03-14 1988-11-15 Canon Kabushiki Kaisha Internally pressure-regulated ink supply
JP2575205B2 (ja) 1989-01-13 1997-01-22 キヤノン株式会社 インクタンク

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6074049A (en) * 1994-04-06 2000-06-13 Pelikan Produktions Ag Ink cartridge for a printing head of an inkjet printer
US6059403A (en) * 1995-12-21 2000-05-09 Pelikan Produktions Ag Liquid cartridge and print head for an ink-jet printer

Also Published As

Publication number Publication date
EP0560729A2 (fr) 1993-09-15
DE59302549D1 (de) 1996-06-20
ES2087698T3 (es) 1996-07-16
ATE138015T1 (de) 1996-06-15
EP0560729A3 (en) 1994-06-22

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