WO2007087972A1 - Reservoir a encre - Google Patents

Reservoir a encre Download PDF

Info

Publication number
WO2007087972A1
WO2007087972A1 PCT/EP2007/000206 EP2007000206W WO2007087972A1 WO 2007087972 A1 WO2007087972 A1 WO 2007087972A1 EP 2007000206 W EP2007000206 W EP 2007000206W WO 2007087972 A1 WO2007087972 A1 WO 2007087972A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink tank
ink
tank according
opening
printer
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.)
Ceased
Application number
PCT/EP2007/000206
Other languages
German (de)
English (en)
Inventor
Dieter Stellmach
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Priority to CN200780003185XA priority Critical patent/CN101374667B/zh
Publication of WO2007087972A1 publication Critical patent/WO2007087972A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

  • the invention relates to an ink tank for an ink printer according to the preamble of claim 1.
  • serial printers with a printer housing in which a carriage is arranged parallel to the print line direction. On this a removable or detachable ink tank and a thus often rigidly connected printer head are mounted.
  • the printer head and the ink container on the carriage traverses between the two carriage ends while the paper fed to the printer is transported perpendicular to the carriage in the line feed direction.
  • acceleration and braking forces act on the ink tank and lead to undulating movements and to the swelling of the ink in the ink tank. This leads to pressure fluctuations in the ink tank and to strong differences in the amount of ink supplied to the printer head and thus to a poor quality ink image.
  • the swelling of the ink increases with increasing size of the ink tank, so that the positioning of the print head and thus the ink print image is adversely affected. This is especially the case when the ink tank and the printer head are rigidly connected. Further, rocking may cause the ink to flow out of the ink tank via vents, for example. Therefore, precautions must be taken to prevent the ink from swirling.
  • US Pat. No. 4,771,295 discloses an ink tank in which a foam core with pores is used as the ink absorber with air chambers. This binds the ink and prevents it from rocking and spilling over the ink.
  • the foam core creates a negative pressure in the ink tank through its cavernous pores, thus preventing leakage of the ink from bottom-side openings of the ink tank. Therefore, the ink tank can be constructive advantageously be arranged spatially above the nozzles.
  • this foam core for an ink tank, a large foamed foam block is cut into several foam cores. During the cutting process, individual small particles remain on the foam core, which can not be completely removed despite repeated extensive washing. These particles can later be transported to the nozzles with the flow of ink and clog them up.
  • foam blocks Another major disadvantage of using foam blocks is the uneven distribution of the pores and the variance of the pore size. Therefore, foam cores cut from the same foam block can have large differences in the number and size of the pores. Since the size and number of pores determines the negative pressure at the nozzles, in practice a vote of the negative pressure at the nozzles by controlling the pore size in the series is not possible in required quality.
  • a very significant drawback is the limited resistance of the foam to solvent-based inks and its uncontrollable swelling in all non-water based ink types. Depending on the ingredients of the ink and depending on the temperature and the storage time swells the foam. This changes the pore size and, correspondingly, the retention force of the foam on the ink.
  • the extractable amount of the stored ink is unsatisfactory because a large part of the ink remains stored in the foam.
  • DE 100 59 130 it is proposed instead of a foam as an ink absorber in the ink tank to use a fiber bundle with fiber spaces as air chambers. This is to achieve a better storage volume and a better flow of ink, and to avoid the inclusion of air bubbles during the filling process.
  • this solution also has the disadvantage that the size of the individual air chambers is different and can not be controlled.
  • the ink comes out of the larger pores first, and it comes with progressive emptying to the formation of air channels in the fiber bundle, so that the print head sucks air instead of ink and there is pressure in spite of sufficient ink supply.
  • liquid reservoirs have become known, which are additionally provided with a so-called Blubbergenerator, such as. in EP 1 022 144.
  • this type of construction ensures that the necessary negative pressure prevails at the nozzles of the printer head, which is why this type of tank is arranged spatially above the nozzles.
  • the invention is therefore based on the object to develop a simply designed ink tank for a printer, with which a constant negative pressure is realized in the ink tank.
  • the ink tank is connected via a suction opening to a printer head of a printer and has a trough with a bottom and side walls for receiving ink and a cover connected to the trough via the side walls with a ventilation opening.
  • At least one for moving the direction of the ink tank transversely oriented and connected to the bottom of the tub intermediate wall is provided with an opening.
  • This partition divides the ink tank into several chambers.
  • an ink absorber for storing the ink can be dispensed with in the ink tank according to the invention, so that a considerably increased free volume for receiving ink is achieved with the same ink tank dimensions.
  • the amount of ink that can be fed to the printer head from the ink tank of the present invention is also larger than that of an ink tank with prior art ink absorbers because almost all the ink can be supplied to the printer head without leaving any significant ink residue in the ink tank.
  • ink tanks with ink absorbers a part of the ink always remains bound in it.
  • the cost of an ink absorber can be saved.
  • the breakthrough in the intermediate wall ensures that the ink can flow from one chamber to the other and level differences in the chambers are compensated.
  • An advantageous embodiment provides that the opening is arranged in the connection area to the floor. This achieves the advantage that the ink flows from one chamber to the other even at a low ink level and level differences are compensated.
  • Ink sump having a recess formed in the direction facing away from the lid, in which a suction pipe for supplying ink to the printer head is guided with its suction-side end. This allows most of the ink to be delivered from the ink tank to the printer head. The remaining ink remaining in the ink tank is substantially reduced.
  • valves are provided as closure elements for the suction opening and the ventilation opening. They are more appropriate Mechanically and / or electrically controllable and arranged within the suction opening and ventilation opening.
  • a cost-effective production of the ink tank is achieved by the use of plastic injection molded parts, wherein advantageously the lid and the tub are held together by a low-priced snap connection.
  • a closable opening is provided below the opening and in an imaginary extension of the intermediate wall. Due to the arrangement of the opening, the advantage is achieved that the tub with its partition and the breakthrough can be made with a plastic injection molding tool without slide for forming the opening. As a result, the production costs remain low.
  • An advantageous embodiment of the invention provides that a plurality of intermediate walls are provided in the ink tank. This is advantageous because it allows a larger volume of ink to be stored without increasing the hydrodynamic pressure fluctuations at the nozzles of the printhead.
  • the arrangement of a plurality of partitions moreover, the advantage that the ink tank in its dimensions and thus its free volume for receiving ink can be significantly increased without causing significant pressure fluctuations in the ink tank and / or to different the Printer head supplied amounts of ink comes.
  • FIG. 1 shows a perspective view of the removal side of the ink tank from a printer with two valves
  • FIG. 3 shows a longitudinal section through the tank with its ink sump, in which a suction tube is inserted, FiG.4 a cross section through the tank with a closed and an open valve and
  • FIG. 5 shows a cross section through the tank with intermediate walls arranged therein with openings which form connection channels between the individual ink chambers.
  • the ink tank of the invention for a printer with a printer head, not shown, is arranged at least in the printing operation below the print head.
  • a negative pressure is generated at the nozzles of the printhead, which is necessary for a sharp print image.
  • the ink tank according to FIGS. 1 and 2 for a printer, not shown, comprises a lid (1) and for receiving ink a substantially square pan (2) with a bottom (2.1) surrounded by side walls (2.2).
  • the cover (1) is liquid-tightly connected to the side walls (2.2) via a snap connection or latching connection.
  • a circumferential sealing ring (17) is inserted between the cover (1) and the side walls (2.2).
  • the lid (1) can be welded or glued liquid-tight with the side walls (2.2).
  • injection-molded cross pin (4, 5) are provided as means for releasably securing the ink tank in a printer housing, not shown.
  • the lid (1) has a suction opening (23) and a ventilation opening (6). Within the openings (6, 23) valves are arranged with molded parts (14) for opening and closing this.
  • an exhaust pipe (16) emanating from the cover (1) is guided into the ink tank. It is extended by an adapter piece (3) protruding beyond the cover (1) and mounted in the suction opening (23) (see Fig. 1), which forms a simple connection possibility to a printer head (not shown).
  • a valve is arranged within the suction pipe (16) at the level of the lid (1). It comprises, in addition to the molded part (14) acting as a closure, a profiled ring (12), only a sealing ring (13) and a compression spring (15).
  • the valve (6) inserted in the ventilation opening (6) is identical in construction to the valve used in the suction pipe (16).
  • the valve inserted in the ventilation opening (6) is shown in Fig. 4 in its closed state.
  • the preferably spherical shaped part (20) of the compression spring (19) against the between the profile ring (12) and the lid (1) arranged sealing ring (13) is pressed. It can be opened by displacement of the molding (20) in the direction of the bottom (2.1). This can be done, for example, by a not shown on the lid (1) fixed rod-shaped actuator.
  • intermediate walls (24) connected to the floor (2.1) are arranged in the tub (2). They are oriented transversely to the direction of movement of the ink tank during the printing process and subdivide the ink tank into a plurality of chambers (29).
  • at least one aperture (18) is arranged per intermediate wall (24) to ensure a balance of the ink level in the chambers (29).
  • the bottom (2.1) below the openings (18) and in an imaginary extension of the associated partition wall (24) closable openings (27).
  • the openings (27) are surrounded to improve the elasticity of the wall of an annular bead (8,9,10,11) and closed by a respective ball (26).
  • the bottom (2.1) of the trough (2) contains a recess formed as an ink sump (7), which is pronounced in the direction away from the cover (1).
  • the suction pipe (16) is guided with its suction-side end into the depression.
  • the suction pipe (16) serves for the flow connection to a printer head, not shown, of a printer.
  • the depression forms on the one hand the deepest point of the ink tank, where the last remainder of the ink collects.
  • the depression is profiled corresponding to the suction tube.
  • the ink tank of the invention for a printer with a printer head, not shown, is arranged at least in the printing operation below the print head.
  • a negative pressure is generated at the nozzles of the printhead, which is necessary for a sharp print image.

Landscapes

  • Ink Jet (AREA)

Abstract

L'invention concerne un réservoir à encre pour une imprimante dotée d'une tête d'impression. Le réservoir à encre contient une ouverture d'aspiration (23) qui le relie à la tête d'impression et, pour recevoir l'encre, une cuve (2) dotée d'un fond (2.1), de parois latérales (2.2) ainsi que d'un couvercle (1) placé sur les parois latérales (2.2) et doté d'une ouverture d'évent (6). Pour obtenir un réservoir d'encre de configuration simple pour une imprimante, qui permet d'établir en permanence une dépression dans le réservoir d'encre, on propose de disposer dans la cuve (2) au moins une paroi intermédiaire (24) reliée au fond (2.1), transversalement par rapport à la direction de déplacement du réservoir lors de l'opération d'impression, la paroi intermédiaire (24) présentant une perforation (18).
PCT/EP2007/000206 2006-01-20 2007-01-11 Reservoir a encre Ceased WO2007087972A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200780003185XA CN101374667B (zh) 2006-01-20 2007-01-11 墨盒

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006003055.9 2006-01-20
DE200610003055 DE102006003055B4 (de) 2006-01-20 2006-01-20 Tintentank

Publications (1)

Publication Number Publication Date
WO2007087972A1 true WO2007087972A1 (fr) 2007-08-09

Family

ID=37993921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/000206 Ceased WO2007087972A1 (fr) 2006-01-20 2007-01-11 Reservoir a encre

Country Status (3)

Country Link
CN (1) CN101374667B (fr)
DE (1) DE102006003055B4 (fr)
WO (1) WO2007087972A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000168B4 (de) * 2011-01-17 2013-07-11 OCé PRINTING SYSTEMS GMBH Tintenvorratsbehälter für einen Tintendrucker und Tintendrucker
CN107757131B (zh) * 2017-09-28 2019-06-25 北京盛通印刷股份有限公司 一种改进的喷墨打印机用墨盒的储墨装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0542247A2 (fr) * 1991-11-12 1993-05-19 Canon Kabushiki Kaisha Réservoir de liquide pour tête d'enregistrement et appareil d'enregistrement l'utilisant
EP0803364A2 (fr) * 1996-04-25 1997-10-29 Canon Kabushiki Kaisha Méthode de recharge pour cartouche d'impression par jet d'encre, appareil d'enregistrement utilisant cette méthode et réservoir d'encre
EP0805033A2 (fr) * 1993-06-29 1997-11-05 Canon Kabushiki Kaisha Conteneur pour liquide, cartouche à jet d'encre comportant ledit conteneur et appareil à jet d'encre comportant ladite cartouche à jet d'encre
US6145974A (en) * 1983-10-13 2000-11-14 Seiko Epson Corporation Ink-supplied printer head and ink container

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306245A (en) * 1978-09-21 1981-12-15 Canon Kabushiki Kaisha Liquid jet device with cleaning protective means
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
US4771295B1 (en) * 1986-07-01 1995-08-01 Hewlett Packard Co Thermal ink jet pen body construction having improved ink storage and feed capability
US4940997A (en) * 1989-08-08 1990-07-10 Hewlett-Packard Company Out-of-ink sensing method
EP0562717B1 (fr) * 1992-02-24 1999-04-21 Canon Kabushiki Kaisha Un récipient de liquide, une cartouche à jet d'encre comprenant un récipient de liquide et un appareil d'enregistrement à jet d'encre ayant ladite cartouche
CN100343064C (zh) * 1992-07-24 2007-10-17 佳能株式会社 用于喷液头的墨盒
US5619238A (en) * 1992-07-24 1997-04-08 Canon Kabushiki Kaisha Method of making replaceable ink cartridge
JP3374209B2 (ja) * 1994-11-18 2003-02-04 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供給装置
US5975687A (en) * 1995-11-06 1999-11-02 Lexmark International, Inc. Insertable baffle for an ink supply reservoir
DE10059130A1 (de) * 1999-12-03 2001-06-07 Microjet Technology Co Tintenspeicher-Material für Tinten-Patronen
EP1366908A1 (fr) * 2002-05-23 2003-12-03 Agfa-Gevaert N.V. Réservoir d'encre pour l'alimentation d'une tête d'enregistrement à jet d'encre
KR100571776B1 (ko) * 2004-02-06 2006-04-18 삼성전자주식회사 잉크카트리지
CN2740403Y (zh) * 2004-04-22 2005-11-16 张家伟 方便加墨的墨盒

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145974A (en) * 1983-10-13 2000-11-14 Seiko Epson Corporation Ink-supplied printer head and ink container
EP0542247A2 (fr) * 1991-11-12 1993-05-19 Canon Kabushiki Kaisha Réservoir de liquide pour tête d'enregistrement et appareil d'enregistrement l'utilisant
EP0805033A2 (fr) * 1993-06-29 1997-11-05 Canon Kabushiki Kaisha Conteneur pour liquide, cartouche à jet d'encre comportant ledit conteneur et appareil à jet d'encre comportant ladite cartouche à jet d'encre
EP0803364A2 (fr) * 1996-04-25 1997-10-29 Canon Kabushiki Kaisha Méthode de recharge pour cartouche d'impression par jet d'encre, appareil d'enregistrement utilisant cette méthode et réservoir d'encre

Also Published As

Publication number Publication date
CN101374667B (zh) 2010-09-01
DE102006003055B4 (de) 2008-02-07
DE102006003055A1 (de) 2007-08-02
CN101374667A (zh) 2009-02-25

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