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GB1375747A - - Google Patents

Info

Publication number
GB1375747A
GB1375747A GB5312372A GB5312372A GB1375747A GB 1375747 A GB1375747 A GB 1375747A GB 5312372 A GB5312372 A GB 5312372A GB 5312372 A GB5312372 A GB 5312372A GB 1375747 A GB1375747 A GB 1375747A
Authority
GB
United Kingdom
Prior art keywords
toner
brush
returned
electro
charge
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
Application number
GB5312372A
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 filed Critical
Publication of GB1375747A publication Critical patent/GB1375747A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/10—Collecting or recycling waste developer
    • G03G21/105—Arrangements for conveying toner waste
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0047—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/0005—Cleaning of residual toner

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Cleaning In Electrography (AREA)

Abstract

1375747 Electro-photographic printing apparatus INTERNATIONAL BUSINESS MACHINES CORP 17 Nov 1972 [22 Dec 1971] 53123/72 Heading G2H Toner remaining on electro-photographic surface 7 after transfer of a developed image is removed by an electrically biased magnetic brush 4, after the electrostatic image has been erased by light 23, and is returned to developing apparatus 1 for re-use by electrically biased magnetic brush 2. For example the toner may be returned by being attached to the surface 7 when the apparatus if not producting prints, and corotron 22, (which usually assists transfer) gives the surface a charge which attracts toner from the brush 4. Alternatively the apparatus may be made to attach bands of returned toner to the surface 7, between positions formerly occupied by images to be developed, or toner return may be carried out by separate end portions of brush 4 and surface 7, or by auger conveyors operating independently of development. Preferably the developing apparatus 1 contains magnetic carrier particles with tetrafluorethylene coats, which give a positive charge to the toner, and the cleaning apparatus 3 contains magnetic carrier particles coated with ethyl cellulose, which places a negative charge on the toner.
GB5312372A 1971-12-22 1972-11-17 Expired GB1375747A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21075671A 1971-12-22 1971-12-22

Publications (1)

Publication Number Publication Date
GB1375747A true GB1375747A (en) 1974-11-27

Family

ID=22784152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5312372A Expired GB1375747A (en) 1971-12-22 1972-11-17

Country Status (7)

Country Link
US (1) US3700328A (en)
JP (1) JPS52382B2 (en)
CA (1) CA1017789A (en)
DE (1) DE2259911A1 (en)
FR (1) FR2164620A1 (en)
GB (1) GB1375747A (en)
IT (1) IT967828B (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918808A (en) * 1972-12-21 1975-11-11 Ricoh Kk Photoreceptor cleaning device for electrophotographic copying apparatus of the dry cleaning agent type
JPS5625672B2 (en) * 1973-05-14 1981-06-13
GB1485588A (en) * 1974-01-28 1977-09-14 Konishiroku Photo Ind Image recording system
DE2424350C3 (en) * 1974-05-20 1984-10-04 Elfotec AG, Zumikon Electrophotographic imaging method using magnetic one-component toner
JPS5921036B2 (en) * 1974-09-28 1984-05-17 株式会社リコー electrostatic recording device
US3924566A (en) * 1974-11-25 1975-12-09 Xerox Corp Reproduction machine with means for solidifying the reclaim toner
US3983841A (en) * 1975-03-21 1976-10-05 Xerox Corporation Toner reclaim conveyor
US4183655A (en) * 1975-10-07 1980-01-15 Ricoh Company, Ltd. Cleaning means for image transfer unit in electrophotographic copying machines
JPS5274344A (en) * 1975-12-17 1977-06-22 Ricoh Co Ltd Enlarged display means
JPS5328432A (en) * 1976-08-20 1978-03-16 Ricoh Co Ltd Recovering method of remaining toner and device therffor
US4141648A (en) * 1976-12-15 1979-02-27 International Business Machines Corporation Photoconductor charging technique
JPS53129639A (en) * 1977-04-19 1978-11-11 Mita Industrial Co Ltd Method of and device for electrostatic copying
JPS5424640A (en) * 1977-07-26 1979-02-24 Ricoh Co Ltd Cleaning device of transfer type electrophotographic apparatus
JPS5481853A (en) * 1977-12-13 1979-06-29 Ricoh Co Ltd Developer treating method in recording apparatus
JPS54116933A (en) * 1978-03-03 1979-09-11 Ricoh Co Ltd Conveying and recovering apparatus for untransferred toners
JPS54116932A (en) * 1978-03-03 1979-09-11 Ricoh Co Ltd Powder toner conveyor
JPS6320996Y2 (en) * 1978-04-07 1988-06-10
US4297021A (en) * 1978-06-09 1981-10-27 Ricoh Company, Ltd. Powder material transportation apparatus
US4260073A (en) * 1978-08-23 1981-04-07 International Business Machines Corporation Virgin toner and used toner supply apparatus and method
US4278342A (en) * 1979-09-04 1981-07-14 International Business Machines Corporation Xerographic charging
US4272184A (en) * 1979-10-01 1981-06-09 Xerox Corporation Conductive carrier for magnetic brush cleaner
JPS5761040U (en) * 1980-09-26 1982-04-10
JPS56138768A (en) * 1980-12-25 1981-10-29 Ricoh Co Ltd Developer treating method in recorder
US4571066A (en) * 1983-07-25 1986-02-18 Ricoh Company, Ltd. Electrophotographic copying apparatus including method of formation of toner transport grid used as a part of drum cleaning system
US4572655A (en) * 1983-07-25 1986-02-25 Ricoh Systems, Inc. Electrophotographic copying apparatus and method of use including electrostatic toner recycling procedure
US4609280A (en) * 1983-10-31 1986-09-02 International Business Machines Corporation Xerographic apparatus and process with backside photoconductor imaging
JPS617865A (en) * 1984-06-22 1986-01-14 Sharp Corp Image forming device
US4772915A (en) * 1986-04-18 1988-09-20 Alps Electric Co., Ltd. Electrophotographic printer having compact image development arrangement
US4724459A (en) * 1986-12-29 1988-02-09 Eastman Kodak Company Apparatus for selectively recycling used toner or delivering such toner to a container
US5200787A (en) * 1988-02-23 1993-04-06 Minolta Camera Kabushiki Kaisha Method and apparatus for supplying and collecting toner in an image forming device
JP3217074B2 (en) * 1990-02-20 2001-10-09 株式会社リコー Image forming device
JPH0554718U (en) * 1991-11-11 1993-07-23 武男 今井 Telescopic pole fixing device
IT1266902B1 (en) * 1993-08-05 1997-01-21 Seiko Epson Corp IMAGE FORMATION APPARATUS.
IT1268121B1 (en) * 1993-10-15 1997-02-20 Seiko Epson Corp IMAGE FORMATION EQUIPMENT
US5970297A (en) * 1994-03-28 1999-10-19 Xerox Corporation Transfer apparatus and method for removing residual material from a transfer member
US5740494A (en) * 1995-08-20 1998-04-14 Ricoh Company, Ltd. Configured to enhance toner collecting efficiency and toner redepositing efficiency
JPH10240005A (en) * 1997-02-27 1998-09-11 Brother Ind Ltd Developing device and image forming device
JP4521810B2 (en) * 2004-05-17 2010-08-11 株式会社リコー Image forming apparatus and process cartridge

Also Published As

Publication number Publication date
IT967828B (en) 1974-03-11
US3700328A (en) 1972-10-24
CA1017789A (en) 1977-09-20
DE2259911A1 (en) 1973-06-28
JPS52382B2 (en) 1977-01-07
FR2164620A1 (en) 1973-08-03
JPS4871649A (en) 1973-09-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee