WO2006008178A1 - Cartouche d'encre pour systeme d'imprimante a jet d'encre, joint d'etancheite pour cartouche d'encre, et procede pour leur fabrication - Google Patents

Cartouche d'encre pour systeme d'imprimante a jet d'encre, joint d'etancheite pour cartouche d'encre, et procede pour leur fabrication Download PDF

Info

Publication number
WO2006008178A1
WO2006008178A1 PCT/EP2005/008027 EP2005008027W WO2006008178A1 WO 2006008178 A1 WO2006008178 A1 WO 2006008178A1 EP 2005008027 W EP2005008027 W EP 2005008027W WO 2006008178 A1 WO2006008178 A1 WO 2006008178A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
ink cartridge
ink
opening
supply connection
Prior art date
Application number
PCT/EP2005/008027
Other languages
German (de)
English (en)
Inventor
Reinhard Maier
Mathias Nagl
Original Assignee
Kmp Printtechnik 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 Kmp Printtechnik Ag filed Critical Kmp Printtechnik Ag
Priority to EP05761580A priority Critical patent/EP1771303A1/fr
Publication of WO2006008178A1 publication Critical patent/WO2006008178A1/fr

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
    • B41J2/1752—Mounting within the printer
    • B41J2/17523—Ink connection
    • 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
    • B41J2/17596—Ink pumps, ink valves

Definitions

  • the present invention relates to an ink cartridge for an inkjet printing system, comprising a supply connection for filling and / or removing ink and a seal for sealing the ink cartridge against leakage of ink at the supply connection, the supply connection being a receptacle for the seal has and the seal has an opening; a seal for an ink cartridge and a method for the manufacture of such an ink cartridge.
  • Ink is usually supplied to inkjet printers via a hollow needle and a tubular, protruding mandrel, a fluid-conducting connection being established between the printer and an ink-filled, replaceable, disposable ink cartridge serving as a storage container.
  • a tube section the so-called dome, is generally formed in the ink cartridge, which is closed at its inward opening with a fine-meshed filter screen and at its outer opening with sealing means for sealingly receiving the aforementioned hollow needles , of the cathedral.
  • the ink cartridge for an ink jet printing system comprises a supply connection for the ink supply and / or removal and a seal for sealing the ink cartridge against leakage of ink at the supply connection, the supply connection having a receptacle for the seal and the seal having an opening, wherein the Sealing has an internal pressure of at least 10 mbar, in particular of at least 100 mbar, preferably of at least 1 bar, by means of which the opening is compressed, in particular sealed.
  • the ink cartridge can be filled with ink and / or ink can be supplied from the ink cartridge to the inkjet printing system.
  • the ink cartridge can be connected, for example, to the inkjet printing system.
  • the ink cartridge has such a hollow needle and engages in a corresponding dome on the ink jet printing system.
  • the supply connection has a receptacle into which the seal can be inserted.
  • Internal pressure means the pressure inside the seal, which can be measured, for example, by a miniaturized pressure sensor inside the seal. With the help of the inner pressure in the seal, a sealing ability of the seal is ensured even when the ink cartridge is installed and removed several times. The sealing effect is achieved in particular when the ink cartridge is not inserted into the printer and, in particular, no hollow needle passes through the opening. Especially with multiple penetration of the Sealing through the hollow needle ensures the necessary pressure for the internal pressure.
  • the internal pressure can be measured, for example, by providing the seal with a small slot into which two capacitor plates which are spaced apart by means of a gas cushion are introduced, the pressure being determinable via the capacitance of the capacitor.
  • the ink cartridge according to the invention for a ink jet printing system comprises a supply connection for filling and / or removing ink and a seal for sealing the ink cartridge against leakage of ink at the supply connection, the supply connection having a receptacle for the seal and the seal has an opening, the seal being compressed by the receptacle, as a result of which the opening is compressed, in particular sealed.
  • the compression of the seal with the aid of the receptacle ensures a seal even when the ink cartridge is installed and removed several times in or out of the inkjet printer.
  • the sealing effect is achieved in particular when the ink cartridge is not inserted in the printer. Compression takes place through a correspondingly different shape of the seal and its reception.
  • the cross section of the receptacle into which the seal is inserted is smaller than the cross section of the seal.
  • the internal pressure or the compression is advantageously anisotropic.
  • Anisotropic in this context means that the internal pressure or compression is stronger in one direction than in another.
  • the internal pressure or the compression in one direction within the opening level of the supply connection is negligible and is sufficiently high in a direction perpendicular to this in order to achieve a sealing effect.
  • the internal pressure or the compression acts advantageously within an opening level of the supply connection.
  • squeezing the seal in a direction perpendicular to the opening plane of the supply connection causes a compression or an internal pressure within the opening plane, whereby a sealing effect can be achieved.
  • the seal advantageously has an opening, in particular an elongated opening, preferably a slot. This opening ensures reproducible opening and closing of the seal even when comparatively blunt needles are used. As soon as the seal comes into engagement with the blunt hollow needle, it opens at its opening and, due to the internal pressure or the compression, establishes a tight connection between the ink cartridge and the inkjet printing system.
  • the direction of the internal pressure or the compression is advantageously transverse, preferably perpendicular, to the longitudinal direction of the opening, in particular the opening is compressed by the internal pressure or the compression.
  • the longitudinal direction of the opening relative to the compression or the internal pressure, it is ensured that the opening is securely sealed against leakage of ink.
  • the seal and / or the receptacle is rotationally unsymmetrical, in particular oval or rectangular. A certain discrepancy between the outer contour of the seal and the inner contour of the receptacle is advantageous for compression.
  • an oval-shaped seal is pressed into a circular-shaped receptacle or, conversely, a seal with a circular cross-section is pressed into a non-circular (for example oval) shaped receptacle. It is also conceivable to insert a square seal in a somewhat smaller, rectangular receptacle, which compresses the seal in one direction. In such solutions, compression of the seal is caused by a contour incompatibility of the seal and the receptacle.
  • sealing can also be achieved by intrinsic tension.
  • the seal is clamped by a snap action: the seal is produced in a first state in which the seal is relaxed accordingly, ie without internal pressure or compression; the seal is then deformed such that the seal snaps into a mechanically quasi-meta-stable state.
  • the seal remains in a stable state, which, however, due to the deformation causes a pressure inside the seal or an internal compression of the seal.
  • the metastable state represents only a local secondary minimum.
  • a sealing effect can be achieved can be achieved even with repeated installation and removal of the ink cartridge from the inkjet printing system.
  • the seal is advantageously formed by a membrane. With the help of this membrane, the supply connection is sealed over its opening level.
  • the seal expediently has an elastomer, in particular a thermoplastic elastomer. Due to the flexible property of the seal, an opening in it is always sealed off due to the compression or the internal pressure.
  • sealing system described can in principle be used both for filling and for removing ink, it is particularly suitable, in particular, for removing ink from the ink cartridge, since here special requirements are placed on the robustness of the seal, in particular also for repeated installation and removal of the ink cartridge in and out of the printer.
  • the ink cartridge comprising a supply connection for filling and / or removing ink and a seal for sealing the ink cartridge against leakage of ink at the supply connection
  • the supply connection has a receptacle for the seal and the seal has an opening
  • the internal pressure or the compression can be effected with the aid of the receptacle, in particular a difference between the shape of the seal and the shape of the receptacle, preferably the inner contour of the receptacle and the outer contour of the seal.
  • the internal pressure or the compression can, however, also be induced by a corresponding shaping of the seal and a corresponding deformation of the seal, in that the seal experiences a potential minimum due to the shaping in the deformed state, as a result of which a mechanically metastable state of the seal is achieved, in which the seal remains stable with a certain tension or an internal pressure.
  • the seal is manufactured in a mechanically relaxed first state in such a way that it can be deformed into a mechanically clamped second state in which it can remain stable; the seal is then transferred from the first to the second state by elastic deformation.
  • the internal pressure or the compression is advantageously anisotropic, as a result of which, in particular, large, elongated openings can be securely closed and sealed against leakage of ink.
  • FIG. 1 shows a perspective oblique view of a seal used in the ink cartridge according to the invention
  • FIG. 2 shows the seal according to FIG. 1 in a perspective cross section
  • FIG. 3 shows a detail of an ink cartridge according to the invention with a dome
  • Figure 4 shows the seal of Figures 1 and 2 in plan view.
  • FIG. 5 a shows a seal in a relaxed state for a further ink cartridge according to the invention in cross section
  • FIG. 5b the seal according to Fig. 5a in a clamped state.
  • 3 shows a section of an ink cartridge 7 according to the invention, which has a receptacle 2 on a supply connection 1, which is designed as a dome 9.
  • the oval seal 3 becomes due to the essentially circular receptacle 2 compressed along the longitudinal direction of the oval, whereby the opening 4, which is designed as a slot 5, is compressed and sealed.
  • Fig. 1 shows the seal 3 in the form of a membrane 6, which has an opening 4 through which a hollow needle (not shown) of an ink jet printing system (not shown) can penetrate.
  • the opening 4 is formed as an elongated slot 5, which is compressed after the seal 3 has been inserted into a receptacle 2 (see FIG. 3) and the resulting compression.
  • Fig. 2 shows the seal 3 of FIG. 1 in cross section.
  • FIG. 5a and 5b show a further embodiment of the seal 3 for an ink cartridge 7 according to the invention, in which compression or internal pressure is not built up with the aid of a receptacle 2, but is intrinsically effected by the seal 3 itself.
  • the seal 3 is made of an elastomer, in particular a thermoplastic elastomer, as can be seen, for example, from FIG. 5a.
  • the seal 3 is in a completely relaxed state.
  • the seal 3 is then folded over in a direction R, as a result of which a compression pressure P arises in an inner region of the seal 3.
  • the seal 3 snaps from a first deformation state into a second deformation state. Both the first and the second state of deformation can be mechanically stable.
  • the compression pressure causes an internal pressure or a compression in this area.
  • a stabilizing means 8 which is configured here as a bulge on the seal, the membrane 3 is stabilized in the folded state, so that the seal 3 in the tensioned state, shown in FIG. 5b, does not in the relaxed state by itself according to Fig. 5a can fold back.
  • the shape of the seal or of the stabilizing agent is measured such that penetration of a hollow needle of an inkjet printing system (not shown) cannot cause the membrane to fold back.
  • the compression pressure P effects a sealing effect in an inner region 10 of the membrane 3.
  • the sealing is effected by means of a compression that is inherent in the seal or a resulting internal pressure, in particular by means of a special shape of the seal and a subsequent deformation of the seal.
  • This can lead, for example, to a configuration of the seal in such a way that the seal itself, for example, is relaxed when the needle is inserted, but tensions in the specified manner when the needle is pulled out, and thus seals the ink cartridge at the ink outlet from the environment becomes.
  • the invention relates to an ink cartridge 7 for an ink jet printing system, comprising a supply connection 1 for filling and / or removing ink and a seal 3 for sealing the ink cartridge 7 against leakage of ink at the supply connection 1, the supply connection 1 having a receptacle 2 for the seal 3 and wherein the seal 3 has an internal pressure of at least 10 mbar, in particular at least 100 mbar, preferably at least 1 bar, and / or the seal 3 is compressed by the receptacle 2; as well as a seal 3 and a method for producing such an ink cartridge 7.
  • the invention is characterized in that a particularly tight connection between the ink cartridge 7 and an ink jet printing system can be produced, which makes the ink cartridge extremely robust and sealable even when used with a dullness Needles and a short path of movement of the needle guaranteed even with repeated installation and removal of the ink cartridge 7.
  • Reference numerals are characterized in that a particularly tight connection between the ink cartridge 7 and an ink jet printing system can be produced, which makes the ink cartridge extremely robust and sealable even when used with a dullness Needles and a short path of movement of the needle guaranteed even with repeated installation and removal of the ink cartridge 7.

Landscapes

  • Ink Jet (AREA)

Abstract

L'invention concerne une cartouche d'encre (7) pour un système d'imprimante à jet d'encre, comprenant un raccord d'alimentation (1) pour le remplissage et/ou la vidange de l'encre, et un joint (3) assurant l'étanchéité de la cartouche contre une sortie d'encre au niveau du raccord d'alimentation (1), ce dernier présentant un logement (2) pour le joint (3), et le joint (3) présentant une ouverture (4), caractérisée en ce que le joint (3) présente une pression intérieure d'au moins 10 mbar, en particulier, d'au moins 100 mbar, de préférence d'au moins 1 bar, au moyen de laquelle l'ouverture (4) est compressée, en particulier, étanchéifiée, et/ou en ce que le joint (3) est compressé à travers le logement (2), de sorte que l'ouverture (4) est compressée, en particulier étanchéifiée. L'invention concerne en outre un joint d'étanchéité (3) et un procédé de production d'une telle cartouche d'encre (7). L'invention est remarquable en ce qu'elle permet d'obtenir une robustesse particulièrement élevée et un pouvoir étanche particulièrement élevé de la cartouche d'encre (7), même lors de l'utilisation d'aiguilles émoussées sur l'imprimante à jet d'encre, ainsi que dans le cas d'un court parcours de déplacement de l'aiguille, et même pour de multiples montages et démontages de la cartouche (7).
PCT/EP2005/008027 2004-07-22 2005-07-22 Cartouche d'encre pour systeme d'imprimante a jet d'encre, joint d'etancheite pour cartouche d'encre, et procede pour leur fabrication WO2006008178A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05761580A EP1771303A1 (fr) 2004-07-22 2005-07-22 Cartouche d'encre pour systeme d'imprimante a jet d'encre, joint d'etancheite pour cartouche d'encre, et procede pour leur fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410035573 DE102004035573A1 (de) 2004-07-22 2004-07-22 Tintenkartusche für ein Tintenstrahldrucksystem sowie Verfahren zur Herstellung derselben
DE102004035573.8 2004-07-22

Publications (1)

Publication Number Publication Date
WO2006008178A1 true WO2006008178A1 (fr) 2006-01-26

Family

ID=35219594

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/008027 WO2006008178A1 (fr) 2004-07-22 2005-07-22 Cartouche d'encre pour systeme d'imprimante a jet d'encre, joint d'etancheite pour cartouche d'encre, et procede pour leur fabrication

Country Status (3)

Country Link
EP (1) EP1771303A1 (fr)
DE (1) DE102004035573A1 (fr)
WO (1) WO2006008178A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4078387B1 (ja) * 2007-06-29 2008-04-23 ワールドネットワーク株式会社 インクタンク及びインクカートリッジ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19943947A1 (de) 1999-09-14 2001-03-22 Artech Gmbh Design & Prod Tintenkartusche für ein Tintenstrahl-Drucksystem
US20020075367A1 (en) * 2000-12-14 2002-06-20 Industrial Technology Research Institute Ink cartridge
US20030128257A1 (en) * 2000-08-16 2003-07-10 Unicorn Image Products Co., Ltd. Ink cartridge having bellows valve, ink filling method and apparatus used thereof
US20040001127A1 (en) 2002-07-01 2004-01-01 Cyber Imaging Limited Ink cartridge sealing member
EP1584476A1 (fr) * 2003-01-14 2005-10-12 Print-Rite Unicorn Image Products Co. Ltd of Zhuhai Bague d'etancheite et cartouche d'encre comprenant cette derniere

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918804A1 (de) * 1969-04-14 1970-12-03 Wilfried Niemes Hydraulische und pneumatische Dichtungen
JP3796439B2 (ja) * 2001-02-09 2006-07-12 キヤノン株式会社 液体収納容器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19943947A1 (de) 1999-09-14 2001-03-22 Artech Gmbh Design & Prod Tintenkartusche für ein Tintenstrahl-Drucksystem
US20030128257A1 (en) * 2000-08-16 2003-07-10 Unicorn Image Products Co., Ltd. Ink cartridge having bellows valve, ink filling method and apparatus used thereof
US20020075367A1 (en) * 2000-12-14 2002-06-20 Industrial Technology Research Institute Ink cartridge
US20040001127A1 (en) 2002-07-01 2004-01-01 Cyber Imaging Limited Ink cartridge sealing member
EP1584476A1 (fr) * 2003-01-14 2005-10-12 Print-Rite Unicorn Image Products Co. Ltd of Zhuhai Bague d'etancheite et cartouche d'encre comprenant cette derniere

Also Published As

Publication number Publication date
DE102004035573A1 (de) 2006-02-16
EP1771303A1 (fr) 2007-04-11

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