EP1019252A1 - Dispositif de remplissage avec de l'encre, pour une tete d'impression a encre, et tete d'impression a encre pouvant etre ainsi remplie - Google Patents

Dispositif de remplissage avec de l'encre, pour une tete d'impression a encre, et tete d'impression a encre pouvant etre ainsi remplie

Info

Publication number
EP1019252A1
EP1019252A1 EP98931892A EP98931892A EP1019252A1 EP 1019252 A1 EP1019252 A1 EP 1019252A1 EP 98931892 A EP98931892 A EP 98931892A EP 98931892 A EP98931892 A EP 98931892A EP 1019252 A1 EP1019252 A1 EP 1019252A1
Authority
EP
European Patent Office
Prior art keywords
ink
print head
volume
hollow body
discharge opening
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.)
Granted
Application number
EP98931892A
Other languages
German (de)
English (en)
Other versions
EP1019252B1 (fr
Inventor
Günter Baitz
Joachim Burchart
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.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf International GmbH
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 Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Publication of EP1019252A1 publication Critical patent/EP1019252A1/fr
Application granted granted Critical
Publication of EP1019252B1 publication Critical patent/EP1019252B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/17556—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
    • B41J2/17506—Refilling of the cartridge
    • B41J2/17509—Whilst mounted in the printer
    • 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
    • B41J2/17566—Ink level or ink residue control

Definitions

  • Ink filling device for an ink print head and ink print head that can be filled with this
  • the invention relates to an ink filling device for an ink printhead and an ink printhead which can be filled therewith according to the preamble of claim 1.
  • Ink printheads have a limited ink supply, which is usually sufficient for the printing of approx. 1-4 million print characters. For ink printers that have to be available day and night, on weekends and also during holiday periods, such as those in fax machines, as well as in applications with a high permanent load, such as with cash register printers, the ink supply stored in the ink print head is not sufficient.
  • JP-A-90 29 991 has therefore already proposed refilling an ink print head in the state installed in an ink printer.
  • the ink print head is equipped with level indicators that report its minimum and maximum permitted ink level. If the minimum fill level is undershot, the ink printhead is transported with its feed opening under an ink refill device, where a nozzle connected to a higher-level ink reservoir is lowered into the feed opening with the aid of an electromagnet and is lifted off the latter after the maximum fill level has been reached .
  • the amount of ink transferred into the ink printhead is determined using electrically controlled means and is dependent only on one level indicator. If the power supply fails during a filling process or the filling fails Level indicator, the ink flow from the ink reservoir cannot be interrupted.
  • US Pat. No. 4,178,595 already describes an ink printer in which the ink print head can be displaced in the print line direction between side walls of the printer frame, the feed opening is arranged on a side wall of the ink print head and a discharge opening of an ink filling device on a side wall of the printer frame in a coaxial orientation the feed opening is arranged.
  • the feed opening can be connected to the discharge opening in a liquid-tight manner by displacing the ink print head in the direction of the print line.
  • the discharge opening of the ink filling device is attached to a variable-volume cylinder, which takes up ink from an ink reservoir when the volume is increased and releases it through the discharge opening when the volume is reduced.
  • the cylinder is dimensioned so that it only receives and dispenses a small amount of ink.
  • a connecting line between the cylinder and the ink reservoir is closed, so that no ink can flow from the latter into the cylinder or from this back into the ink reservoir.
  • the cylinder is reduced in volume by means of a piston which can be displaced with the aid of an electromagnet, and the volume is increased by a spring which pushes the piston back.
  • the amount of ink to be transferred into the ink print head is determined by the energization time of the electromagnet.
  • the known ink filling device also requires an electromagnet and additional control effort for this.
  • the electromagnet must be designed so that it generates the flow pressure for the ink. conditions as well as the friction of the piston in the cylinder and the restoring force of the spring must be overcome.
  • the object of the invention is therefore to provide an ink filling device for an ink print head and an ink print head which can be filled with it, in which only a certain amount of ink is transferred to the ink print head without additional drive effort.
  • the invention is based on the consideration that the drive motor, which is required anyway for the displacement of the ink print head between the side walls of the ink printer along the print line, can be used to influence the volume of the hollow body if the hollow body is arranged on the inside of the side wall of the printer frame .
  • the same drive motor is used to dock the ink printhead to the delivery port.
  • the volume is then reduced by a further displacement of the ink print head against the side wall beyond the point of connection of the feed opening of the ink print head with the discharge opening.
  • the volume is increased by moving the ink print head in the opposite direction.
  • the drive motor preferably a stepper motor, required for the print head displacement along the printing line can also be used for influencing the volume of the hollow body in the sense of triple use. So no additional drive elements are required.
  • the arrangement according to the invention has the advantage that only a well-dosed volume of ink can reach the ink printhead.
  • the arrangement has an intrinsically safe operating state with regard to the ink flow during each operating state of the ink printer: only if the Hollow body is affected in the sense of a volume reduction, the discharge opening is open. If the volume is constant or the volume of the hollow body is enlarged, the discharge opening is securely closed so that no ink can flow out.
  • the amount of ink delivered by the ink filling device to the ink print head is determined by the size of the adjustment or the further displacement. In this way, partially empty ink printheads can be filled with the required amount of ink, and the use of ink printheads with different capacities is possible without changing the arrangement.
  • the hollow body is then only partially emptied. When the volume is increased, it is then only filled in accordance with the partial quantity removed.
  • the point in time and / or the amount of ink of an ink filling can be controlled depending on a predeterminable number since the ink print head was inserted into the ink printer and thereafter depending on the printed dots or printed characters since the last ink filling. Since the ink droplets ejected from the print nozzles of the ink print head have a known volume, the ink consumption can be calculated from the number of nozzles activated during printing. The same applies to the number of printed characters if the average ink consumption is known for them. This makes it easy to refill the ink printhead with an amount of ink that corresponds to the calculated consumption. The time of a refill can also be determined in this way.
  • the volume reduction and enlargement is repeated several times. can be carried out indirectly one after the other. This process can be triggered automatically by a special control command to the ink printer or, depending on the operating time of the ink print head, by the printer control itself.
  • the discharge opening is formed on a tubular connecting piece which, when the ink print head is moved, dips into the feed opening of the ink print head against the discharge opening.
  • a valve spring-loaded in its closed position is installed in the nozzle, which opens when the pressure in the hollow body exceeds a predetermined value.
  • the arrangement of the nozzle on the hollow body has the advantage that when the displacement movement of the ink print head against the discharge opening and thus against the hollow body ends, the pressure in the latter immediately falls below the predetermined value and the valve closes.
  • the nozzle When the ink print head is moved away from the hollow body, the nozzle initially remains connected to the feed opening, but a vacuum is formed in the area in front of the valve, which ensures that the ink still remaining in this area is sucked into the ink print head becomes.
  • the volume-variable hollow body can optionally be designed as a compressible balloon made of elastic plastic, as a bellows or also as a piston / cylinder arrangement.
  • 1 to 3 is a schematic front view of a
  • FIG. 1 shows a generally designated 10 ink printer in a schematic front view.
  • An ink print head 12 is slidably guided in both directions between a left side wall 14 and a right side wall 16 of a printer frame on a parallel guide 18 along a print line.
  • the ink print head 12 is displaced by a belt drive 22 which can be driven by a stepping motor 20.
  • the ink printer 10 has a printing area P which can be occupied by a maximum of one recording medium.
  • the print area P is followed by an ink fill area F in which there is an ink fill device, designated overall by 23.
  • the ink filling device 23 is constructed as described below:
  • a bellows 24 is attached to the inside of the left side wall 14. Due to its own elasticity, this is subjected to a restoring force acting in the direction of its maximum longitudinal expansion a.
  • the bellows 24 can be compressed parallel to the pressure line in the direction of arrow A against its restoring force.
  • a connecting line 26 opens into the bellows 24, the other end of which is connected to an ink reservoir 28.
  • a first valve 30 spring-loaded into its closed position is installed in the connecting line 26. This opens when the pressure in the bellows 24 is lower than the pressure in the ink reservoir 28 by a predetermined value.
  • a tubular connecting piece 34 is placed vertically, which continues in a nozzle-shaped delivery opening 36.
  • a second valve 38 which is spring-loaded in its closed position is installed in the connecting piece 34. This opens when the pressure in the bellows 24 exceeds a predetermined value.
  • the discharge opening 36 is in coaxial alignment with a feed opening 40 arranged, which is introduced into a side wall 42 of the ink print head 12 facing the ink filling device 23.
  • the feed opening 40 can be connected to the discharge opening 36 in a liquid-tight manner by displacing the ink print head 12 in the direction of arrow A.
  • This operating state of the ink printer 10 is shown in FIG. 2, the bellows 24 having already been compressed by a small amount compared to its maximum length a. The ink in the bellows 24 is thus under such an increased pressure that the first valve 30 is closed and the second valve 38 is open. If the ink print head 12 is moved further in the direction of arrow A, the bellows 24 is compressed to an increasing extent and the ink flows through the discharge opening 36 and the feed opening 40 into an ink chamber 44 located in the ink print head 12. The pressure is reduced by the ink discharge in the bellows 24 so far that the second valve 38 closes.
  • FIG. 3 shows this operating state, the ink print head 12 having already been moved away from the left side wall 14 by a small amount against the direction of the arrow A.
  • the bellows 24 begins to expand again, so that a vacuum is created in it.
  • This operating state is shown in Fig. 1.

Abstract

L'invention concerne un dispositif de remplissage (23) avec de l'encre, pour une tête d'impression à encre (12), et une tête d'impression à encre pouvant être ainsi remplie. Le dispositif de remplissage comprend un réservoir d'encre ainsi qu'une ouverture de distribution (36) et la tête d'impression à encre présente une chambre à encre avec une ouverture d'acheminement (40) pour l'encre. La tête d'impression peut être remplie une fois montée dans une imprimante à encre. L'ouverture de distribution (36) est ménagée dans un corps creux (24) à volume variable, qui prélève l'encre dans le réservoir (28) lorsqu'il augmente de volume et qui distribue de l'encre par l'ouverture de distribution (36) lorsqu'il diminue de volume.
EP98931892A 1997-07-24 1998-04-09 Dispositif de remplissage avec de l'encre, pour une tete d'impression a encre, et tete d'impression a encre pouvant etre ainsi remplie Expired - Lifetime EP1019252B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19731959A DE19731959A1 (de) 1997-07-24 1997-07-24 Tintenfülleinrichtung für einen Tintendruckkopf
DE19731959 1997-07-24
PCT/DE1998/001027 WO1999004977A1 (fr) 1997-07-24 1998-04-09 Dispositif de remplissage avec de l'encre, pour une tete d'impression a encre, et tete d'impression a encre pouvant etre ainsi remplie

Publications (2)

Publication Number Publication Date
EP1019252A1 true EP1019252A1 (fr) 2000-07-19
EP1019252B1 EP1019252B1 (fr) 2001-10-04

Family

ID=7836826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98931892A Expired - Lifetime EP1019252B1 (fr) 1997-07-24 1998-04-09 Dispositif de remplissage avec de l'encre, pour une tete d'impression a encre, et tete d'impression a encre pouvant etre ainsi remplie

Country Status (6)

Country Link
US (1) US6199975B1 (fr)
EP (1) EP1019252B1 (fr)
JP (1) JP2001510751A (fr)
DE (2) DE19731959A1 (fr)
ES (1) ES2165686T3 (fr)
WO (2) WO1999004977A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941300A1 (de) * 1999-08-31 2001-03-01 Trespa Int Bv Heißverformbare Preßstoffplatte
JP2002370374A (ja) * 2001-06-18 2002-12-24 Canon Inc インクジェットプリント装置、プリントヘッドおよびインク供給方法
US6948803B2 (en) * 2001-06-18 2005-09-27 Canon Kabushiki Kaisha Ink container, inkjet printing apparatus and ink supplying method
JP2002370375A (ja) * 2001-06-18 2002-12-24 Canon Inc インクジェットプリント装置、インクタンクおよびインク供給方法
JP2003053996A (ja) * 2001-08-22 2003-02-26 Canon Inc インク供給機構および該インク供給機構を備えたインクジェット記録装置
JP2003246078A (ja) * 2002-02-25 2003-09-02 Canon Inc インク貯留容器並びに該容器を用いるインクジェットプリント装置およびインク供給方法
ITTO20020428A1 (it) * 2002-05-20 2003-11-20 Tecnost Sistemi S P A Stampante a getto di inchiostro con serbatoio ad alta capacita' e relativo sistema di rifornimento dell'inchiostro.
KR100411332B1 (en) * 2003-02-12 2003-12-24 Taeil Systems Co Ltd Automatic ink feeding device
JP4952093B2 (ja) * 2006-06-30 2012-06-13 ブラザー工業株式会社 インクジェット記録装置
JP5114878B2 (ja) * 2006-06-30 2013-01-09 ブラザー工業株式会社 インクジェット記録装置
JP2008012677A (ja) * 2006-06-30 2008-01-24 Brother Ind Ltd 画像記録装置
JP4935208B2 (ja) * 2006-07-01 2012-05-23 ブラザー工業株式会社 画像記録装置
JP7096660B2 (ja) * 2017-11-29 2022-07-06 理想科学工業株式会社 印刷装置およびインクジェットヘッドモジュール

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JPS5461934A (en) * 1977-10-26 1979-05-18 Ricoh Co Ltd Ink replenishing method in ink jet recorder
JPS588352B2 (ja) 1977-11-04 1983-02-15 株式会社リコー インクジエツト記録装置
US4187511A (en) * 1978-03-20 1980-02-05 Centronics Data Computer Corp. Method and apparatus for filling the movable reservoir of an inkjet printer
JPS58194561A (ja) * 1982-05-11 1983-11-12 Canon Inc 記録装置
US5136305A (en) * 1990-12-06 1992-08-04 Xerox Corporation Ink jet printer with ink supply monitoring means
US5199470B1 (en) 1991-05-17 1996-05-14 Graphic Utilities Inc Method and apparatus for refilling ink cartridges
JPH06191055A (ja) * 1992-12-25 1994-07-12 Canon Inc インクジェット記録装置のインク再充填装置
US5325111A (en) * 1992-12-28 1994-06-28 Xerox Corporation Removing waste ink from capping station
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Also Published As

Publication number Publication date
EP1019252B1 (fr) 2001-10-04
ES2165686T3 (es) 2002-03-16
WO1999004975A2 (fr) 1999-02-04
JP2001510751A (ja) 2001-08-07
DE59801663D1 (de) 2001-11-08
WO1999004975A3 (fr) 1999-04-22
WO1999004977A1 (fr) 1999-02-04
US6199975B1 (en) 2001-03-13
DE19731959A1 (de) 1999-02-04

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