GB1296997A - - Google Patents

Info

Publication number
GB1296997A
GB1296997A GB1296997DA GB1296997A GB 1296997 A GB1296997 A GB 1296997A GB 1296997D A GB1296997D A GB 1296997DA GB 1296997 A GB1296997 A GB 1296997A
Authority
GB
United Kingdom
Prior art keywords
developer
development
developing
toner
residual toner
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
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 GB1296997A publication Critical patent/GB1296997A/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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0801—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer for cascading
    • 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)
  • Cleaning In Electrography (AREA)

Abstract

1296997 Electro-photographic copiers RANK XEROX Ltd 22 Dec 1969 [31 Dec 1968] 62311/69 Heading G2H An electro-photographic copier comprises image forming, developing and transfer stations but no separate cleaning station; the developing station serving both to remove residual toner left from a previous copy cycle and to develop a new electrostatic latent image formed on top of the residual toner. As shown, as toner and carrier particles are cascaded down a drum 11, the carrier particles remove residual toner and the toner particles develop the new latent image. Preferably an electrically biassed development electrode 26 and guide baffle 27 are provided. Electrode 26 may comprise a solid sheet, a screen, or a series of wires or points. The specification also describes cascading developer down an inclined plate; fur brush developing; fluidized bed development (the developer being agitated by a gas stream or by mechanical vibration); and development by passage through a C-shaped trough of developer.
GB1296997D 1968-12-31 1969-12-22 Expired GB1296997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78903168A 1968-12-31 1968-12-31

Publications (1)

Publication Number Publication Date
GB1296997A true GB1296997A (en) 1972-11-22

Family

ID=25146360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296997D Expired GB1296997A (en) 1968-12-31 1969-12-22

Country Status (6)

Country Link
US (1) US3649262A (en)
BE (1) BE743661A (en)
DE (1) DE1965293A1 (en)
FR (1) FR2027431A1 (en)
GB (1) GB1296997A (en)
NL (1) NL6919477A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144408B1 (en) * 1970-12-26 1976-11-29
US4330199A (en) * 1972-04-13 1982-05-18 Canon Kabushiki Kaisha Electrophotographic device
US3865080A (en) * 1973-01-17 1975-02-11 Xerox Corp Toner pickoff apparatus
US3851962A (en) * 1973-08-29 1974-12-03 Savin Business Machines Corp Electrostatic hold down apparatus
US3921577A (en) * 1974-05-28 1975-11-25 Xerox Corp Magnetic development units
US4063811A (en) * 1975-04-11 1977-12-20 Minolta Camera Kabushiki Kaisha Electrophotographic copier
US4265998A (en) * 1979-11-13 1981-05-05 International Business Machines Corporation Electrophotographic photoreceptive background areas cleaned by backcharge process
US4470693A (en) * 1982-01-11 1984-09-11 Pitney Bowes Inc. Self-cleaning xerographic apparatus
JPS58122566A (en) * 1982-01-18 1983-07-21 Toshiba Corp Image forming device
DE3309984C2 (en) * 1982-04-16 1986-10-30 Ricoh Co., Ltd., Tokio/Tokyo A method of controlling the image density of copies made by an electrophotographic copier
US4500198A (en) * 1982-12-10 1985-02-19 International Business Machines Corporation Multiple roller magnetic brush developer having development electrode voltage switching
US4664504A (en) * 1983-01-20 1987-05-12 Tokyo Shibaura Denki Kabushiki Kaisha Image forming apparatus
US4534641A (en) * 1983-10-31 1985-08-13 Xerox Corporation Charge erase device for copying or reproduction machines and printers
US4609280A (en) * 1983-10-31 1986-09-02 International Business Machines Corporation Xerographic apparatus and process with backside photoconductor imaging
US4538900A (en) * 1983-11-09 1985-09-03 Ricoh Company, Ltd. Electrophotographic copying apparatus including drum conditioning apparatus and method
US4652114A (en) * 1985-04-05 1987-03-24 Minnesota Mining And Manufacturing Company Electrophotographic copying apparatus and process
US4769676A (en) * 1986-03-04 1988-09-06 Kabushiki Kaisha Toshiba Image forming apparatus including means for removing residual toner
US4800147A (en) * 1987-08-03 1989-01-24 Xerox Corporation Xerographic process without conventional cleaner
JPH0283556A (en) * 1988-09-20 1990-03-23 Minolta Camera Co Ltd Color image forming device
JP2633686B2 (en) * 1989-05-31 1997-07-23 株式会社東芝 Image forming device
JP2598131B2 (en) * 1989-05-31 1997-04-09 株式会社東芝 Image forming device
JP2917357B2 (en) * 1990-02-07 1999-07-12 ミノルタ株式会社 Magnetic powder containing members for copying machines
JPH056088A (en) * 1991-02-15 1993-01-14 Toshiba Corp Electrostatic image recording device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573881A (en) * 1948-11-02 1951-11-06 Battelle Development Corp Method and apparatus for developing electrostatic images with electroscopic powder
US2756676A (en) * 1953-05-04 1956-07-31 Haloid Co Method for the production of electrophotographic prints
US2911944A (en) * 1954-09-16 1959-11-10 Haloid Xerox Inc Xerographic development apparatus
US2956487A (en) * 1955-03-23 1960-10-18 Rca Corp Electrostatic printing
US2874064A (en) * 1955-05-16 1959-02-17 Haloid Xerox Inc Xerographic cleaner
US2959153A (en) * 1955-12-21 1960-11-08 Ibm Xerographic image developing apparatus
US2880699A (en) * 1957-10-21 1959-04-07 Haloid Xerox Inc Xerographic development
US3008826A (en) * 1958-03-06 1961-11-14 Xerox Corp Xerographic development
BE602721A (en) * 1960-04-19
US3257223A (en) * 1962-11-01 1966-06-21 Xerox Corp Electrostatic powder cloud xerographic development method and apparatus
US3424131A (en) * 1964-09-30 1969-01-28 Xerox Corp Electroded cascade development system
US3472657A (en) * 1965-04-30 1969-10-14 Xerox Corp Xerographic development method and apparatus
US3424615A (en) * 1966-01-03 1969-01-28 Xerox Corp Method and apparatus for cleaning xerographic plates
US3503776A (en) * 1966-02-21 1970-03-31 Xerox Corp Xerographic development
US3484265A (en) * 1966-07-21 1969-12-16 Xerox Corp Transversely reciprocating fluidized bed development method
US3412710A (en) * 1966-10-11 1968-11-26 Xerox Corp Cleanup electrode
US3520604A (en) * 1967-10-16 1970-07-14 Addressograph Multigraph Photoelectrostatic copier

Also Published As

Publication number Publication date
NL6919477A (en) 1970-07-02
DE1965293A1 (en) 1970-09-17
FR2027431A1 (en) 1970-09-25
US3649262A (en) 1972-03-14
BE743661A (en) 1970-06-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee