GB1388434A - Charging of electrophotographic material - Google Patents

Charging of electrophotographic material

Info

Publication number
GB1388434A
GB1388434A GB3851472A GB3851472A GB1388434A GB 1388434 A GB1388434 A GB 1388434A GB 3851472 A GB3851472 A GB 3851472A GB 3851472 A GB3851472 A GB 3851472A GB 1388434 A GB1388434 A GB 1388434A
Authority
GB
United Kingdom
Prior art keywords
corona discharge
region
electro
photographic material
coating
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
GB3851472A
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1388434A publication Critical patent/GB1388434A/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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/02—Sensitising, i.e. laying-down a uniform charge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
    • Y10S430/102—Electrically charging radiation-conductive surface

Abstract

1388434 Charging photo-conductive materials FUJI PHOTO FILM CO Ltd 17 Aug 1972 [20 Aug 1971] 38514/72 Heading G2H An electro-photographic material comprising a highly insulating support 11 bearing a photoconductive insulating coating 12 is electrostatically charged by subjecting a first region of the coating to a first corona discharge 5 of one polarity while simultaneously illuminating said region with light 4, simultaneously subjecting a second region of said coating (which forms a continuation of said first region and is shielded from the illumination, e.g. by means of a plate 6) to a second corona discharge 3 of the opposite polarity to said one polarity; and causing a relative movement between said electro-photographic material and the corona discharge means in such a manner that areas of said electro-photographic material are subjected consecutively to said first corona discharge (with light irradiation) and then to said second corona discharge.
GB3851472A 1971-08-20 1972-08-17 Charging of electrophotographic material Expired GB1388434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46063430A JPS4829441A (en) 1971-08-20 1971-08-20

Publications (1)

Publication Number Publication Date
GB1388434A true GB1388434A (en) 1975-03-26

Family

ID=13229037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3851472A Expired GB1388434A (en) 1971-08-20 1972-08-17 Charging of electrophotographic material

Country Status (5)

Country Link
US (1) US3778623A (en)
JP (1) JPS4829441A (en)
DE (1) DE2240776A1 (en)
FR (1) FR2151293A5 (en)
GB (1) GB1388434A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886416A (en) * 1973-12-07 1975-05-27 Xerox Corp Method and apparatus for adjusting corotron currents
JPS51117050A (en) * 1975-04-07 1976-10-14 Ricoh Co Ltd Charge control device for automatic duplicator
US4413897A (en) * 1979-10-31 1983-11-08 Tokyo Shibaura Denki Kabushiki Kaisha Electrostatic copying apparatus
JPS5825661A (en) * 1981-08-07 1983-02-15 Ricoh Co Ltd Electrostatic charger
US4408865A (en) * 1981-11-23 1983-10-11 Hewlett Packard Company Corona discharge device for electrophotographic charging and potential leveling
JP6402989B2 (en) * 2014-07-25 2018-10-10 株式会社リコー Image forming apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955938A (en) * 1955-08-01 1960-10-11 Haloid Xerox Inc Xerography
GB1241439A (en) * 1967-10-20 1971-08-04 Katsuragawa Denki Kk Method of electrophotography

Also Published As

Publication number Publication date
JPS4829441A (en) 1973-04-19
US3778623A (en) 1973-12-11
DE2240776A1 (en) 1973-03-01
FR2151293A5 (en) 1973-04-13

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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