US3876282A - Container for a supply of liquid developer - Google Patents

Container for a supply of liquid developer Download PDF

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Publication number
US3876282A
US3876282A US356427A US35642773A US3876282A US 3876282 A US3876282 A US 3876282A US 356427 A US356427 A US 356427A US 35642773 A US35642773 A US 35642773A US 3876282 A US3876282 A US 3876282A
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United States
Prior art keywords
container
chambers
housing
supply
liquid developer
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
US356427A
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English (en)
Inventor
Klaus Peter Schon
Helmut Stieger
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle 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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Application granted granted Critical
Publication of US3876282A publication Critical patent/US3876282A/en
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Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/104—Preparing, mixing, transporting or dispensing developer

Definitions

  • ABSTRACT A liquid developer container for an electrophotographic copier which has a housing impervious to liquids, a slidable wall within the housing which subdivides the housing into two chambers, means for moving the slidable wall which can be operated from the outside and on operation change the space ratio between the two chambers, connecting pipes between the two chambers, and an inlet pipe connection and an outlet pipe connection leading into one of the chambers.
  • the present invention relates to a container for a supply of liquid developer for an electrophotographic copying apparatus.
  • a developer may be employed which may be described as consisting substantially of a dispersion of tacky, colored toner particles in a carrier liquid.
  • a developer may be employed which may be described as consisting substantially of a dispersion of tacky, colored toner particles in a carrier liquid.
  • this object is achievedby'a container for a supply of lquid developer which is characterized by i a. a'housing which is impervious to liquids,
  • c.. means for moving the slidable wall which can be :operated from the outside
  • the connecting pipe between the two chambers consists of a bore in the slidable wall.
  • a corresponding portion of the contents of one chamber may be displaced into the other chamber in this manner.
  • No valve is necessary for such a bore, because the bore may be made of such a size that no undesirable mixing of the contents of the two chambers takes place as long as the separating wall is not moved.
  • the ready-for-use developer described above is contained in the chamber equipped with the inlet and outlet pipe connections, and it may-be conveyed from the chamber to the developing station and back to the chamber by means of a circulating pump, for example.
  • the slidable wall may take the form of a movable piston.
  • the deice for moving the piston may be controlled by the number of copies produced and the piston may travel through a defined stroke for each copy.
  • At least one of the chambers should be equipped with stirrers which can be operated from the outside of the apparatus.
  • the container according to thepresent invention may be constructed as a cartridge which is simply inserted into an electrophotographicapparatus, the connection to the inlet and outlet pipes and the mechanical coupling between the drive of the copying apparatus and the means for moving the slidable wall and, possibly, also the driving means for the stirrer or stirrers being made during insertion.
  • FIG. 1 is a diagrammatic representation of a container according to the present invention which, in this case, forms part of an electrophotographic copying apparatus,
  • FIG. 2 is a further embodiment of the container according to the present invention.
  • FIG. 3 is an example of still another embodiment of a container according to the present invention.
  • the whole container is designated as 1. It comprises a housing 2 which a is subdivided into the chambers 4 and 5 by a slidable separating wall 3. Chamber 5 is filled with liquid developer which is conveyed, by means of a feed pump 7, from the chamber 5 through the pipe 6 into the developer station of the electrophotographic apparatus, designated in the FIG. as 8. After it has been used for development, the liquid developer is pumped back through the pipe 9 into the chamberS.
  • Chamber 4 contains the developer concentrate, which is 3 to 6 times more concentrated than the developer contained in chamber 5, This means that the same carrier liquids are contained'in both chambers, but that the toner liquids dispersed therein differ in their concentration.
  • a pipe 10 leads from the chamber 4 to a dispersing unit 11 which is connected over a pipe 12 with a tank 13 containing developer concentrate. This tank 13 also is connected to the developer chamber 5 by a pipe'l4.
  • the slidable wall 3 which in the present invention where the housing 2 is cylindrical in shape, consists of a displaceable piston with sealings 15 and 16 may be moved to the right and to the left by a threaded rod operated by driving means 17.
  • the driving means 17 may consist, for example, of a mechanical connection to the drive of a photoconductor drum in the electrophotographic apparatus.
  • the driving means 17 may consist of a separate motor which is controlled either by the number of copies or by a measurement of the toner concentration.
  • the separating wall 3 is moved to the left. Over the dispersing unit 11, the pipe 12, the tank 13, and the pipe 14, the toner concentrate contained in chamber 4 is thereby displaced into the correspondingly enlarged chamber 5.
  • FIG. 2 A further embodiment of the container according to the present invention is shown in FIG. 2.
  • a pipe 6 leads from the developer chamber to the electrophotographic apparatus 8 and a pipe 9 leads back to the developer chamber 5.
  • the outside pipes 10, 12, and 14 shown in FIG. 1 are omitted in this embodiment, instead the developer concentrate contained in the chamber 4 is conveyed to the developer chamber 5 simply through two bores 21 and 22 provided in the slidable wall.
  • toner concentrate flows from the chamber containing the concentrate, i.e., chamber 4, through the bores 21 and 22 into the developer chamber 5.
  • two stirrers 24 and 25 are provided which are attached to a shaft 23 and serve to mix the contents of chambers 4 and 5, respectively, in order to prevent sedimentation.
  • two guide or operating rods 26 and 27 are provided for displacing the slidable wall or piston 3.
  • FIG. 3 Still another embodiment of the device according to the present invention is shown in FIG. 3.
  • the chamber 4 containing the concentrate is disposed above the developer chamber 5, but in all other respects the device corresponds substantially to the device illustrated by FIG. 2.
  • the piston is provided with two bores 21 and 22 through which the volumes ofchambers 4 and 5 are balanced.
  • only one stirrer is provided which is installed in the chamber containing the concentrate. The stirrer is capable of being moved upward together with the piston 3.
  • the housing 2 has a tapered wall 28. At the bottom of the wall, a pump 7 is provided which conveys the liquid developer through the pipe 6 to the electrophotographic apparatus 8. Through the pipe 9, the liquid developer flows back to the chamber 5.
  • the pump 7 has the function of a stirrer.
  • the pump 7 prevents a sedimentation of the toner in exactly the position where the liquid toner would deposit, i.e., it crushes the enlarged toner drops which are being formed.
  • Container for a supply of liquid developer for an electrophotographic copying apparatus comprising a. a housing which is impervious to liquids,
  • this slidable wall consists of a piston means, which is movable by a threaded means operated by driving means from the outside,
  • liquid-tight housing is of substantially cylindrical shape and that the slidable wall consists of a piston which is advantageously provided with sealings.
  • the container for a supply of liquid developer according to claim 1 in which the housing consists of a first section which substantially defines a first chamber and is of substantially cylindrical shape, and that the remainder of the housing has a tapered wall which at its lowest and narrowest end is provided with a pump.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US356427A 1972-05-05 1973-05-02 Container for a supply of liquid developer Expired - Lifetime US3876282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2221974A DE2221974C3 (de) 1972-05-05 1972-05-05 Vorratseinrichtung für ein elektrophotographisches Kopiergerät

Publications (1)

Publication Number Publication Date
US3876282A true US3876282A (en) 1975-04-08

Family

ID=5844088

Family Applications (1)

Application Number Title Priority Date Filing Date
US356427A Expired - Lifetime US3876282A (en) 1972-05-05 1973-05-02 Container for a supply of liquid developer

Country Status (7)

Country Link
US (1) US3876282A (en, 2012)
JP (1) JPS5624952B2 (en, 2012)
AU (1) AU471639B2 (en, 2012)
DE (1) DE2221974C3 (en, 2012)
FR (1) FR2183733B1 (en, 2012)
GB (1) GB1365468A (en, 2012)
NL (1) NL7305773A (en, 2012)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992003765A1 (en) * 1990-08-22 1992-03-05 Spectrum Sciences B.V. Liquid toner replenishment system
US5208637A (en) * 1990-08-22 1993-05-04 Spectrum Sciences B.V. Liquid toner replenishment system
US5394232A (en) * 1992-03-25 1995-02-28 Tokyo Industries, Inc. Electrophotographic color printing method
US5918093A (en) * 1997-08-27 1999-06-29 Samsung Electronics Co., Ltd. Developing solution supplying system for wet type developer
US5930555A (en) * 1997-12-12 1999-07-27 Samsung Electronics Co., Ltd. Developer liquid supply device of wet type electrophotographic printer
US5970273A (en) * 1998-07-07 1999-10-19 Imation Corp. Ink cartridge for liquid electrographic imaging devices
US5995788A (en) * 1998-01-31 1999-11-30 Samsung Electronics Co., Ltd. Refill cartridge for printer and ink refill apparatus adopting the same
US6088560A (en) * 1998-07-07 2000-07-11 Imation Corp. Liquid ink replenishment system for liquid electrographic imaging devices
US6823161B2 (en) * 2002-01-04 2004-11-23 Samsung Electronics Co., Ltd. Developer of electrophotographic image forming system
US20070052773A1 (en) * 2005-09-02 2007-03-08 Canon Kabushiki Kaisha Liquid container
US20070052771A1 (en) * 2005-09-02 2007-03-08 Canon Kabushiki Kaisha Ink tank and recording apparatus using ink tank
US20070052768A1 (en) * 2005-09-02 2007-03-08 Canon Kabushiki Kaisha Liquid Container
US20070263052A1 (en) * 2006-05-11 2007-11-15 Canon Kabushiki Kaisha Liquid container
US20090262164A1 (en) * 2008-04-17 2009-10-22 Fuji Xerox Co., Ltd. Developer supply device, process cartridge, and image forming apparatus
US20120262523A1 (en) * 2011-04-14 2012-10-18 Levi Yaakov Ink tank system
US8491107B2 (en) 2010-10-29 2013-07-23 Funai Electric Co., Ltd. Fluid container having mixing chambers for micro-fluid applications
US8590756B2 (en) 2011-04-26 2013-11-26 Funai Electric Co., Ltd. Container with tube drawing desired fluid concentrations for micro-fluid applications

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905741A1 (de) * 1979-02-15 1980-08-28 Agfa Gevaert Ag Toner-zufuehreinrichtung fuer eine elektrophoretische entwicklungsstation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1094810A (en) * 1913-03-19 1914-04-28 Henry Rauch Apparatus for pitching casks.
US2293201A (en) * 1936-01-21 1942-08-18 Arthur H Gaebel Etching machine
US3369524A (en) * 1964-08-28 1968-02-20 Lumoprint Zindler Kg Copying device for electro-photographic copying materials
US3550520A (en) * 1966-12-02 1970-12-29 Bernard Andre Lucas Device for automatic developing of photographic sensitive surfaces
US3605682A (en) * 1969-06-23 1971-09-20 Loveshaw Corp Coating computer
US3658030A (en) * 1968-06-21 1972-04-25 Schaper & Brummer Kg Apparatus for coating discrete articles
US3712203A (en) * 1969-11-15 1973-01-23 Iwatsu Electric Co Ltd Automatic control device for the toner concentration within a developer in an electrostatic copy machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1094810A (en) * 1913-03-19 1914-04-28 Henry Rauch Apparatus for pitching casks.
US2293201A (en) * 1936-01-21 1942-08-18 Arthur H Gaebel Etching machine
US3369524A (en) * 1964-08-28 1968-02-20 Lumoprint Zindler Kg Copying device for electro-photographic copying materials
US3550520A (en) * 1966-12-02 1970-12-29 Bernard Andre Lucas Device for automatic developing of photographic sensitive surfaces
US3658030A (en) * 1968-06-21 1972-04-25 Schaper & Brummer Kg Apparatus for coating discrete articles
US3605682A (en) * 1969-06-23 1971-09-20 Loveshaw Corp Coating computer
US3712203A (en) * 1969-11-15 1973-01-23 Iwatsu Electric Co Ltd Automatic control device for the toner concentration within a developer in an electrostatic copy machine

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992003765A1 (en) * 1990-08-22 1992-03-05 Spectrum Sciences B.V. Liquid toner replenishment system
US5208637A (en) * 1990-08-22 1993-05-04 Spectrum Sciences B.V. Liquid toner replenishment system
US5394232A (en) * 1992-03-25 1995-02-28 Tokyo Industries, Inc. Electrophotographic color printing method
US5784677A (en) * 1992-03-25 1998-07-21 Toray Industries Inc. Electrophotographic printer and printing method using specific intermediate transfer drum and transfer roller arrangement
US5918093A (en) * 1997-08-27 1999-06-29 Samsung Electronics Co., Ltd. Developing solution supplying system for wet type developer
US5930555A (en) * 1997-12-12 1999-07-27 Samsung Electronics Co., Ltd. Developer liquid supply device of wet type electrophotographic printer
EP0923005A3 (en) * 1997-12-12 2001-03-28 Samsung Electronics Co., Ltd. Developer liquid supply device of wet type electrographic printer
US5995788A (en) * 1998-01-31 1999-11-30 Samsung Electronics Co., Ltd. Refill cartridge for printer and ink refill apparatus adopting the same
US5970273A (en) * 1998-07-07 1999-10-19 Imation Corp. Ink cartridge for liquid electrographic imaging devices
US6088560A (en) * 1998-07-07 2000-07-11 Imation Corp. Liquid ink replenishment system for liquid electrographic imaging devices
US6823161B2 (en) * 2002-01-04 2004-11-23 Samsung Electronics Co., Ltd. Developer of electrophotographic image forming system
US20070052771A1 (en) * 2005-09-02 2007-03-08 Canon Kabushiki Kaisha Ink tank and recording apparatus using ink tank
US8690299B2 (en) * 2005-09-02 2014-04-08 Canon Kabushiki Kaisha Liquid container
US20070052768A1 (en) * 2005-09-02 2007-03-08 Canon Kabushiki Kaisha Liquid Container
US20070052773A1 (en) * 2005-09-02 2007-03-08 Canon Kabushiki Kaisha Liquid container
US7618136B2 (en) * 2005-09-02 2009-11-17 Canon Kabushiki Kaisha Ink tank and recording apparatus using ink tank
US7621627B2 (en) * 2005-09-02 2009-11-24 Canon Kabushiki Kaisha Liquid container
US7708394B2 (en) * 2005-09-02 2010-05-04 Canon Kabushiki Kaisha Liquid container
US20070263052A1 (en) * 2006-05-11 2007-11-15 Canon Kabushiki Kaisha Liquid container
US7735984B2 (en) * 2006-05-11 2010-06-15 Canon Kabushiki Kaisha Liquid container
US20090262164A1 (en) * 2008-04-17 2009-10-22 Fuji Xerox Co., Ltd. Developer supply device, process cartridge, and image forming apparatus
US8090299B2 (en) * 2008-04-17 2012-01-03 Fuji Xerox Co., Ltd. Developer supply device, process cartridge, and image forming apparatus
US8491107B2 (en) 2010-10-29 2013-07-23 Funai Electric Co., Ltd. Fluid container having mixing chambers for micro-fluid applications
US20120262523A1 (en) * 2011-04-14 2012-10-18 Levi Yaakov Ink tank system
US8590756B2 (en) 2011-04-26 2013-11-26 Funai Electric Co., Ltd. Container with tube drawing desired fluid concentrations for micro-fluid applications

Also Published As

Publication number Publication date
DE2221974B2 (de) 1977-12-15
DE2221974C3 (de) 1978-08-17
FR2183733B1 (en, 2012) 1977-02-11
JPS5624952B2 (en, 2012) 1981-06-09
AU471639B2 (en) 1976-04-29
JPS4962147A (en, 2012) 1974-06-17
DE2221974A1 (de) 1973-11-15
GB1365468A (en) 1974-09-04
AU5527673A (en) 1974-11-07
NL7305773A (en, 2012) 1973-11-07
FR2183733A1 (en, 2012) 1973-12-21

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