GB1266997A - - Google Patents

Info

Publication number
GB1266997A
GB1266997A GB1266997DA GB1266997A GB 1266997 A GB1266997 A GB 1266997A GB 1266997D A GB1266997D A GB 1266997DA GB 1266997 A GB1266997 A GB 1266997A
Authority
GB
United Kingdom
Prior art keywords
paper
toner
charges
electrostatic
transfer
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 GB1266997A publication Critical patent/GB1266997A/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
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/163—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap
    • G03G15/1635—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap the field being produced by laying down an electrostatic charge behind the base or the recording member, e.g. by a corona device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

1,266,997. Electrostatic printing apparatus. INTERNATIONAL BUSINESS MACHINES CORP. 21 Oct., 1970 [24 Nov., 1969], No. 49918/70. Heading B6C. An electrophotographic copying machine comprises a photoconductive member 12 on which an electrostatic image is formed and developed by application of toner and a transfer corona unit 35 which charges a paper web or sheet 33 to a polarity opposite to that of the toner particles and also charges an auxiliary grid or flap 86 to the same polarity as the paper, so that the paper is pressed against the member 12 by electrostatic repulsion and transfer of toner to the paper is enhanced.
GB1266997D 1969-11-24 1970-10-21 Expired GB1266997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87907369A 1969-11-24 1969-11-24

Publications (1)

Publication Number Publication Date
GB1266997A true GB1266997A (en) 1972-03-15

Family

ID=25373384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266997D Expired GB1266997A (en) 1969-11-24 1970-10-21

Country Status (7)

Country Link
US (1) US3620617A (en)
JP (1) JPS4916504B1 (en)
CA (1) CA938833A (en)
FR (1) FR2071749A5 (en)
GB (1) GB1266997A (en)
NL (1) NL7015036A (en)
SE (1) SE362154B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238019A (en) * 1989-11-10 1991-05-22 Asahi Optical Co Ltd Transfer device for electrophotographic device

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013354A (en) * 1971-06-03 1977-03-22 Canon Kabushiki Kaisha Apparatus for separating transfer material in an electrostatic copying device
JPS4826140A (en) * 1971-08-05 1973-04-05
US3870541A (en) * 1972-01-27 1975-03-11 Xerox Corp Selective transfer of an electrostatic toner image
JPS4898153U (en) * 1972-02-21 1973-11-20
JPS573000Y2 (en) * 1972-08-22 1982-01-19
US3811048A (en) * 1972-09-12 1974-05-14 Xerox Corp Electrophotographic charging apparatus
US3850519A (en) * 1973-01-12 1974-11-26 Xerox Corp Xerographic image transfer apparatus
US3851962A (en) * 1973-08-29 1974-12-03 Savin Business Machines Corp Electrostatic hold down apparatus
DE2361062C3 (en) * 1973-12-07 1980-06-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Electrostatic latent image development chamber
US4027962A (en) * 1975-01-13 1977-06-07 Xerox Corporation Color transparency reproducing machine
US3966199A (en) * 1975-03-17 1976-06-29 Xerox Corporation Belt transfer loading system
US4110024A (en) * 1976-05-14 1978-08-29 Xerox Corporation Transfer assembly for electrostatic transfer of a toner image from a curvilinear recording surface
US4174170A (en) * 1976-12-16 1979-11-13 Minolta Camera Kabushiki Kaisha Conductive toner transfer photocopying machine
JPS53129639A (en) * 1977-04-19 1978-11-11 Mita Industrial Co Ltd Method of and device for electrostatic copying
JPS5680075A (en) * 1979-12-06 1981-07-01 Toshiba Corp Exfoliating device of recording paper
US4575216A (en) * 1983-11-09 1986-03-11 Ricoh Company, Ltd. Electrophotographic copying apparatus including transfer charge corona and shield
GB8426044D0 (en) * 1984-10-15 1984-11-21 Xerox Corp Electrostatographic apparatus
JPS6250781A (en) * 1985-08-29 1987-03-05 Sharp Corp Transferring and peeling device
JP2661055B2 (en) * 1987-08-21 1997-10-08 ミノルタ株式会社 Corona discharge transfer device for electrophotography
US4891680A (en) * 1988-04-25 1990-01-02 Xerox Corporation Transfer apparatus
DE69009074T2 (en) * 1989-02-08 1994-10-06 Toshiba Kawasaki Kk Transmission device.
JP3223004B2 (en) * 1993-09-21 2001-10-29 株式会社東芝 Image forming device
US5713063A (en) * 1994-08-03 1998-01-27 Kabushiki Kaisha Toshiba Electrostatic image transfer device having a two level transfer voltage for improving image quality at leading and trailing edge regions
DE10121289A1 (en) * 2001-05-02 2002-11-07 Nexpress Solutions Llc Device for guiding print media through an unloading device
US6687479B2 (en) 2002-05-31 2004-02-03 Xerox Corporation Paper input guide for a transfer zone in a xerographic printing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777957A (en) * 1950-04-06 1957-01-15 Haloid Co Corona discharge device
US3332396A (en) * 1963-12-09 1967-07-25 Xerox Corp Xerographic developing apparatus with controlled corona means
US3470417A (en) * 1966-10-03 1969-09-30 Eastman Kodak Co Method of altering electrostatic charge on an insulating material
US3532494A (en) * 1969-09-08 1970-10-06 Gopal C Bhagat Solid area development in xerography employing an insulating screen in the charging step

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238019A (en) * 1989-11-10 1991-05-22 Asahi Optical Co Ltd Transfer device for electrophotographic device
US5101239A (en) * 1989-11-10 1992-03-31 Asahi Kogaku Kogyo Kabushiki Kaisha Transfer device for electrophotographic printer
GB2238019B (en) * 1989-11-10 1994-01-12 Asahi Optical Co Ltd Transfer device for electrophotographic printer

Also Published As

Publication number Publication date
JPS4916504B1 (en) 1974-04-23
DE2057494B2 (en) 1976-04-15
FR2071749A5 (en) 1971-09-17
DE2057494A1 (en) 1971-06-09
NL7015036A (en) 1971-05-26
CA938833A (en) 1973-12-25
SE362154B (en) 1973-11-26
US3620617A (en) 1971-11-16

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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