GB1228987A - - Google Patents

Info

Publication number
GB1228987A
GB1228987A GB1228987DA GB1228987A GB 1228987 A GB1228987 A GB 1228987A GB 1228987D A GB1228987D A GB 1228987DA GB 1228987 A GB1228987 A GB 1228987A
Authority
GB
United Kingdom
Prior art keywords
roller
ceramic
july
charging apparatus
addressograph
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 GB1228987A publication Critical patent/GB1228987A/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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
    • G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
    • G03G15/0233—Structure, details of the charging member, e.g. chemical composition, surface properties

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

1,228,987. Roller charging apparatus. ADDRESSOGRAPH-MULTIGRAPH CORP. July 12, 1968 [July 28, 1967], No. 33387/68. Heading G2H. An electrostatic charging apparatus comprises a pair of driven roller electrodes 12, 16 arranged to feed a photo-sensitive paper between them. The roller 16 is of metal and roller 12 comprises a ceramic shell 14 on a conductive drive-shaft, the ceramic having a resistivity within the range of about 10<SP>7</SP>-10<SP>9</SP> ohm-centimeters. The ceramic material 14 contains sub-micron metallic particles uniformely distributed throughout an alumina or beryllia matrix.
GB1228987D 1967-07-28 1968-07-12 Expired GB1228987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65682067A 1967-07-28 1967-07-28

Publications (1)

Publication Number Publication Date
GB1228987A true GB1228987A (en) 1971-04-21

Family

ID=24634714

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1228987D Expired GB1228987A (en) 1967-07-28 1968-07-12

Country Status (3)

Country Link
US (1) US3521126A (en)
BE (1) BE718180A (en)
GB (1) GB1228987A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035745A2 (en) * 1980-03-10 1981-09-16 Kabushiki Kaisha Toshiba Charging device
EP1055973A2 (en) * 1999-05-25 2000-11-29 Lexmark International, Inc. Coated charge roller

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1267535A (en) * 1968-03-19 1972-03-22 Iwatsu Electric Co Ltd Electrophotographic process and apparatus
GB1349055A (en) * 1970-05-04 1974-03-27 Agfa Gevaert Method for the control of charge on a moving web
US3697836A (en) * 1970-06-03 1972-10-10 Coors Porcelain Co Ceramic electrical resistor roll for copying machine
US4079437A (en) * 1976-04-30 1978-03-14 Minnesota Mining And Manufacturing Machine and method for poling films of pyroelectric and piezoelectric material
US4089034A (en) * 1976-04-30 1978-05-09 Minnesota Mining And Manufacturing Company Machine and method for poling films of pyroelectric and piezoelectric material
DE69021234T2 (en) * 1989-03-14 1996-01-04 Canon Kk Charging element and electrophotographic device with such an element.
US5245392A (en) * 1992-10-02 1993-09-14 Xerox Corporation Donor roll for scavengeless development in a xerographic apparatus
US5408070A (en) * 1992-11-09 1995-04-18 American Roller Company Ceramic heater roller with thermal regulating layer
DE69329203T2 (en) * 1992-11-09 2001-03-29 American Roller Co., Union Grove CHARGER ROLLER WITH A LAYER MADE OF A CERAMIC MIXTURE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980834A (en) * 1956-04-26 1961-04-18 Bruning Charles Co Inc Charging of photo-conductive insulating material
US2975145A (en) * 1958-04-16 1961-03-14 Bendix Corp Semi-conductive ceramic composition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035745A2 (en) * 1980-03-10 1981-09-16 Kabushiki Kaisha Toshiba Charging device
EP0035745A3 (en) * 1980-03-10 1982-02-03 Tokyo Shibaura Denki Kabushiki Kaisha Charging device
EP1055973A2 (en) * 1999-05-25 2000-11-29 Lexmark International, Inc. Coated charge roller
EP1055973A3 (en) * 1999-05-25 2002-01-09 Lexmark International, Inc. Coated charge roller

Also Published As

Publication number Publication date
BE718180A (en) 1968-12-31
US3521126A (en) 1970-07-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees