GB1326817A - Method and apparatus for electrophotography - Google Patents

Method and apparatus for electrophotography

Info

Publication number
GB1326817A
GB1326817A GB2361671*A GB2361671A GB1326817A GB 1326817 A GB1326817 A GB 1326817A GB 2361671 A GB2361671 A GB 2361671A GB 1326817 A GB1326817 A GB 1326817A
Authority
GB
United Kingdom
Prior art keywords
corona device
exposure
polarity
insulative layer
photo
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
GB2361671*A
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.)
Katsuragawa Electric Co Ltd
Original Assignee
Katsuragawa Electric 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
Priority claimed from JP45006603A external-priority patent/JPS4910056B1/ja
Application filed by Katsuragawa Electric Co Ltd filed Critical Katsuragawa Electric Co Ltd
Publication of GB1326817A publication Critical patent/GB1326817A/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
    • G03G15/056—Apparatus for electrographic processes using a charge pattern using internal polarisation

Abstract

1326817 Electro-photography KATSURAGAWA DENKI KK 19 April 1971 [24 Jan 1970] 23616/71 Heading G2H After the formation of a charge image on an insulative layer adjacent a photo-conductive layer capable of exhibiting persistent internal polarization, using a corona device of one polarity before imagewise light exposure and a corona device of the opposite polarity during exposure, the image is intensified using a corona device of the second polarity (the intensity of the third corona device being greater than that of the second). Uniform exposure may follow the third charging step. The photo-conductive layer is exposed on either surface (through the insulative layer or'an electrode layer. The charge image is developed before or after transfer to a receiver surface. The insulative layer may be the outer surface of a continuously rotating drum. The exposure may be through the second corona device, the third corona device being adjacent thereto (as shown).
GB2361671*A 1970-01-24 1971-04-19 Method and apparatus for electrophotography Expired GB1326817A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP45006603A JPS4910056B1 (en) 1970-01-24 1970-01-24
US10873371A 1971-01-22 1971-01-22
US31088172A 1972-11-30 1972-11-30

Publications (1)

Publication Number Publication Date
GB1326817A true GB1326817A (en) 1973-08-15

Family

ID=27277242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2361671*A Expired GB1326817A (en) 1970-01-24 1971-04-19 Method and apparatus for electrophotography

Country Status (2)

Country Link
US (1) US3797928A (en)
GB (1) GB1326817A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950167A (en) * 1973-09-26 1976-04-13 Xerox Corporation Imaging system
JPS5516288B2 (en) * 1974-11-07 1980-05-01
US4063945A (en) * 1977-02-17 1977-12-20 Xerox Corporation Electrostatographic imaging method
US4265998A (en) * 1979-11-13 1981-05-05 International Business Machines Corporation Electrophotographic photoreceptive background areas cleaned by backcharge process
WO2004108623A2 (en) * 2003-06-04 2004-12-16 Verline Inc. A method and apparatus of curing concrete structures

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615395A (en) * 1966-09-28 1971-10-26 Canon Camera Co Electrostatic and electrophotographic variable contrast image-forming methods
JPS4813455B1 (en) * 1968-11-05 1973-04-27

Also Published As

Publication number Publication date
US3797928A (en) 1974-03-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years