EP1088666A1 - Flüssigkeitsbehälter und Abgabevorrichtung - Google Patents

Flüssigkeitsbehälter und Abgabevorrichtung Download PDF

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Publication number
EP1088666A1
EP1088666A1 EP00121230A EP00121230A EP1088666A1 EP 1088666 A1 EP1088666 A1 EP 1088666A1 EP 00121230 A EP00121230 A EP 00121230A EP 00121230 A EP00121230 A EP 00121230A EP 1088666 A1 EP1088666 A1 EP 1088666A1
Authority
EP
European Patent Office
Prior art keywords
dispensing device
chassis
diaphragm
shaped members
cup
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.)
Withdrawn
Application number
EP00121230A
Other languages
English (en)
French (fr)
Inventor
Mark R. Hock
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.)
BPrex Healthcare Brookville Inc
Original Assignee
Owens Illinois Closure Inc
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 Owens Illinois Closure Inc filed Critical Owens Illinois Closure Inc
Publication of EP1088666A1 publication Critical patent/EP1088666A1/de
Withdrawn legal-status Critical Current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
    • B41J2/17559—Cartridge manufacturing
    • 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

  • This invention relates to a liquid containment and dispensing device. More particularly, this invention relates to a liquid containment and dispensing device with a self-contained pump. The device of this invention is useful for containing and dispensing printing ink in an ink jet printer.
  • U.S. Patent 5,784,087 (Wallace et al.), the disclosure of which is incorporated herein by reference, describes a liquid containment and dispensing device with a self-contained pump that was developed for use in containing and dispensing printing ink in an ink jet printer.
  • the pump of the aforesaid device includes a linearly acting pumping member that reciprocates within a pumping chamber, which is defined by a perimetrical wall, and the pumping chamber is covered by a thin, flexible diaphragm, which is fabricated from a laminate of thin films. The diaphragm is then heat-staked to a free edge of the perimetrical wall that surrounds the pumping chamber.
  • the device of the aforesaid '087 patent uses a flexible pouch that is fabricated from a single sheet for containing ink, the single flexible sheet being formed from a laminate of thin films.
  • the pouch of such reference is supported only at its open end, and is unsupported on its sides and closed end.
  • Such a construction increases the resistance of the device to shock loads.
  • a pouch formed from a single flexible sheet was also used, the edges of the folds of the folded sheet in such a device being heat staked to the sides of the frame rather than to one another.
  • a liquid containment and dispensing device especially a liquid containment and dispensing device that is useful in containing and dispensing printing ink in an ink jet printer, with a pumping chamber cover that does not tend to wrinkle around its outside, where it is joined to a free edge of a perimetrical wall of the pumping chamber.
  • the invention as described above incorporates a crimped metallic ring to help secure the pumping chamber cover to the free edge of the perimetrical wall of the pumping chamber to augment the seat that is formed therebetween by heat-staking.
  • the elimination of wrinkles in the pumping chamber cover according to the present invention is obtained by pre-shaping a sheetlike cover material by a thermoforming operation, to thereby provide a domed configuration to a central portion of the cover that results in sufficient flexibility to accommodate the reciprocation of a pumping element without requiring excessive material in the surrounding portion of the cover.
  • the cover is formed from a sheetlike material that is a thin laminate of two or more polymeric films, with a suitable adhesive between adjacent layers of such laminate to prevent delamination of the layers thereof.
  • At least one of the films is a maternal with good resistance to oxygen and moisture vapor transmission, such as ethylene vinyl alcohol copolymer (EVOH), which is preferably used in the interior of the laminate, with an innermost layer of a low density polyethylene (LDPE), which has good flexibility and bonds well to the perimetrical wall of the pumping chamber when the wall and the liquid containment and dispensing device chassis of which it is a part is formed from polyethylene by injection molding.
  • the outermost layer of the pumping chamber cover is then formed from a high heat resistant polymer such as nylon (a polyamide material) for good resistance to abrasion and to prevent the film structure from sticking to the heat staking die.
  • an object of the present invention to provide an improved liquid containment and dispensing device of a type that has a self-contained pump. More particularly, it is an object of the present invention to provide a liquid containment and dispensing device as described above that has utility in containing and dispensing printing ink in an ink jet printer.
  • a liquid containment and dispensing device is indicated generally by reference numeral 10 in Fig. 1.
  • the liquid containment and dispensing device 10 is made up of a hard protective shell 12 that is closed at an end 12a, which will be the upper end when the device 10 is installed, for example, in an ink jet printer.
  • a molded plastic chassis 14 is installed in an opposed, open end 12b of the shell 12, and the chassis 14 has a pumping chamber 16 defined and surrounded by a perimetrical wall 18, which is formed integrally with the chassis 14.
  • a pumping element 20, shown fragmentarily, is positioned within the pumping chamber 16 and is reciprocable therein, a coil spring 22 being provided to bias the pumping element 20 away from the closed end 12a of the shell 12.
  • the pumping chamber 16 is closed by a cover or diaphragm 24, whose outer portion is heat-staked to a free edge of the perimetrical wall 18 that surrounds the pumping chamber 16.
  • the diaphragm 24 is then further secured to the perimetrical wall 18 by an aluminum crimp ring 26 to further ensure that the seal between the diaphragm 24 and the perimetrical wall 18 remains secure throughout the life of the ink containment and dispensing device 10.
  • Ink or other liquid is dispensed from the liquid containment and dispensing device 10 by deflecting the central part of the diaphragm 24 to deflect the pumping element 20 within the pumping chamber 16, against the force of the coil spring 20, to thereby pump the liquid from a flexible pouch (not shown in Fig. 1), which is secured to the underside (in the illustrated arrangement) of the chassis 14 through a fluid outlet portion 28 of the chassis 14.
  • the liquid containment and dispensing device 10 functions in the manner described in the aforesaid US. Patent 5,784,087, except that the device of such reference does not disclose the use of a crimp ring corresponding to the crimp ring 26 of the device 10 of Fig. 1.
  • the device 10 of Fig. 2 differs further from the device of the aforesaid reference in that the diaphragm 24 is preshaped, for example, by a thermoforming operation, to provide it with a domed central portion 24a and a planar surrounding edge portion 24b, which is the portion that is heat-staked to the penmetrical wall 18 on the chassis 14.
  • the diaphragm 24, thus, has sufficient excess material in its central portion 24a without requiring excess material in its surrounding edge portion 24b to be able to flex as required during the pumping of ink or other liquid from the device 10, as described above.
  • Such excess material can lead to wrinkling in an otherwise planar diaphragm, which can complicate the problem in properly heat-staking a diaphragm to the free edge of a perimetrical wall of a liquid containment and dispensing device of the type described. Such wrinkling can also cause premature failure of the diaphragm material as a result of the flexing cycle.
  • the diaphragm 24 is formed from a lamination of layers of polymeric materials of various compositions.
  • the layers include an innermost layer 24c of any member of the polyethylene material such as LDPE, LLDPE, HDPE, metallocene PE, ethylene vinyl acetate and ethylene ethyl acrylate or blends thereof, preferably with a density in the range of 0.880g./cc.-0.964g./cc. Any such material has good strength and flexibility and heat-stakes well to the perimetrical wall of the chassis 14 when the chassis 14 is formed of polyethylene.
  • the diaphragm 24 also includes an intermediate layer 24d of a material with good resistance to gas and moisture vapor transmission, such as nylon and nylon co-polymers, PVDC and EVOH, which is the preferred material.
  • the diaphragm 24 also includes an outermost layer 24e of a polymer selected for high melt temperature, abrasion resistance and flex life, such as nylon and nylon co-polymers and polypropylene. Since the material of the layers 24c, 24d, 24e, as described, do not bond well to one another, preferably layers 24f, 24g of an adhesive are provided between adjacent layers of the diaphragm 24 to prevent the layers 24c, 24d, 24e from delaminating in service.
  • the diaphragm 24, as described, is preferably produced by co-extrusion because adhesives used in co-extrusion are usually higher in molecular weight than those used in laminated composites, such higher molecular weight adhesives being less susceptible to being dissolved by aggressive printing inks.
  • Figs. 2 and 3 may create the impression that the diaphragm 24 has substantial thickness
  • the diaphragm 10 will have a total thickness of the order of 5 mils (0.005 in.).
  • the molded plastic chassis 14 has a perimetrical frame 17 that depends therefrom and is integral therewith, the frame 17 having a spaced apart opposed pair of side members 17a, 17b and a transversely extending bottom member 17c that extends between the side members 17a, 17b.
  • An open-ended pouch indicated generally by reference numeral 19 is formed by sealingly joining the free, planar edges of an opposed pair of generally cup-shaped members 21, 23 to the side members 17a, 17b and the bottom member 17c, for example, by heat staking.
  • each cup-shaped member 21, 23 is formed from a laminated sheet into the illustrated cup-shaped configuration, for example, by thermoforming, and the laminated sheet from which each cup-shaped member 21, 23 is formed may correspond, for example, to the laminate used in the manufacture of the diaphragm 23 by co-extrusion. Because the interior of each of the cup-shaped members 21, 23 is pre-shaped, as described, its planar free edges 21a, 23a, respectively, need not undergo any wrinkling to match up precisely with the adjacent portions of the frame 17 in order to define a pouch 19 with sufficient internal volume to hold the required amount of ink or other liquid, such as up to 100 ml. of such liquid. Thus, the heat staking of the members 21, 23 to the frame 17 does not involve quality assurance risks of the type involved in heat staking flat sheets with sufficient internal volume to the frame 17.
EP00121230A 1999-09-29 2000-09-29 Flüssigkeitsbehälter und Abgabevorrichtung Withdrawn EP1088666A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40727199A 1999-09-29 1999-09-29
US407271 1999-09-29

Publications (1)

Publication Number Publication Date
EP1088666A1 true EP1088666A1 (de) 2001-04-04

Family

ID=23611333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121230A Withdrawn EP1088666A1 (de) 1999-09-29 2000-09-29 Flüssigkeitsbehälter und Abgabevorrichtung

Country Status (8)

Country Link
EP (1) EP1088666A1 (de)
JP (1) JP2001158114A (de)
KR (1) KR20010050531A (de)
CN (1) CN1291548A (de)
BR (1) BR0004527A (de)
CA (1) CA2319606A1 (de)
ID (1) ID27325A (de)
SG (1) SG93266A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2965913A4 (de) * 2013-03-07 2017-11-08 Seiko Epson Corporation Flüssigkeitsversorgungsvorrichtung und flüssigkeitsbehälter
EP4067091A1 (de) * 2021-03-30 2022-10-05 Canon Kabushiki Kaisha Flüssigkeitsbehälter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10124593B2 (en) * 2016-12-08 2018-11-13 Funai Electric Co., Ltd. Fluidic dispensing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784087A (en) 1995-04-27 1998-07-21 Owens-Illinois Closure Inc. Liquid containment and dispensing device
EP0890441A2 (de) * 1997-06-05 1999-01-13 Hewlett-Packard Company Tintenzurückhaltungsvorrichtung für Tintenstrahldrucker
EP0891867A2 (de) 1997-07-14 1999-01-20 Owens-Illinois Closure Inc. Behältnis und Ausgabevorrichtung für Flüssigkeit mit verbesserter Stossbeständigkeit
EP0940258A1 (de) * 1998-03-04 1999-09-08 Hewlett-Packard Company Tintenbehälternachfüllverfahren

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5734990A (en) * 1980-08-12 1982-02-25 Canon Inc Apparatus for detecting ink residual amount
US5856839A (en) * 1995-04-27 1999-01-05 Hewlett-Packard Company Ink supply having an integral pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784087A (en) 1995-04-27 1998-07-21 Owens-Illinois Closure Inc. Liquid containment and dispensing device
EP0890441A2 (de) * 1997-06-05 1999-01-13 Hewlett-Packard Company Tintenzurückhaltungsvorrichtung für Tintenstrahldrucker
EP0891867A2 (de) 1997-07-14 1999-01-20 Owens-Illinois Closure Inc. Behältnis und Ausgabevorrichtung für Flüssigkeit mit verbesserter Stossbeständigkeit
EP0940258A1 (de) * 1998-03-04 1999-09-08 Hewlett-Packard Company Tintenbehälternachfüllverfahren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2965913A4 (de) * 2013-03-07 2017-11-08 Seiko Epson Corporation Flüssigkeitsversorgungsvorrichtung und flüssigkeitsbehälter
EP4067091A1 (de) * 2021-03-30 2022-10-05 Canon Kabushiki Kaisha Flüssigkeitsbehälter

Also Published As

Publication number Publication date
CA2319606A1 (en) 2001-03-29
KR20010050531A (ko) 2001-06-15
JP2001158114A (ja) 2001-06-12
CN1291548A (zh) 2001-04-18
BR0004527A (pt) 2001-04-17
ID27325A (id) 2001-03-29
SG93266A1 (en) 2002-12-17

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