GB1283808A - Method of colour electrophotography - Google Patents

Method of colour electrophotography

Info

Publication number
GB1283808A
GB1283808A GB57653/70A GB5765370A GB1283808A GB 1283808 A GB1283808 A GB 1283808A GB 57653/70 A GB57653/70 A GB 57653/70A GB 5765370 A GB5765370 A GB 5765370A GB 1283808 A GB1283808 A GB 1283808A
Authority
GB
United Kingdom
Prior art keywords
layer
transparent
insulative
conductive
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
GB57653/70A
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
Application filed by Katsuragawa Electric Co Ltd filed Critical Katsuragawa Electric Co Ltd
Publication of GB1283808A publication Critical patent/GB1283808A/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
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/024—Photoelectret layers
    • 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
    • G03G13/01—Electrographic processes using a charge pattern for multicoloured copies
    • 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
    • G03G13/056—Electrographic processes using a charge pattern using internal polarisation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Color Electrophotography (AREA)

Abstract

1283808 Electro-photography KATSURAGAWA DENKI K K 4 Dec 1970 [17 Dec 1969] 57653/70 Heading G2H An element comprising a photo-conductive layer 3 between a transparent conductive layer 2 and a transparent insulating layer 4 is charged with one polarity and then with the opposite polarity on the insulative side, imagewise radiation exposure being effected on the conductive side during the second charging step. A transparent insulative layer 4<SP>1</SP> may be situated between the photo-conductive layer 3 and the transparent conductive layer 2 Fig. 2 . A second photoconductive layer 3<SP>1</SP> may be situated between the first photo-conductive layer3 and the transparent insulative layer 4<SP>1</SP> Fig. 3. In the latter form, the transparent insulative layer 4<SP>1</SP> may be omitted. Charging with both polarities may be effected with a corona discharge device 6. Uniform radiation exposure may be effected during the first charging step. In this case, a stationary light source 18 may be employed, corona discharge device 6 being oscillated. Alternatively, a scanning combination of a corona discharge device 7 and light source 8 may be employed. The resulting charge image on insulative layer 4 is developed in known manner. A multi-colour image is produced by repeating the steps of charging and developing. The multi-colour image produced may be transferred and insulative layer 4 cleaned for reuse.
GB57653/70A 1969-12-17 1970-12-04 Method of colour electrophotography Expired GB1283808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44101500A JPS4938170B1 (en) 1969-12-17 1969-12-17

Publications (1)

Publication Number Publication Date
GB1283808A true GB1283808A (en) 1972-08-02

Family

ID=14302337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57653/70A Expired GB1283808A (en) 1969-12-17 1970-12-04 Method of colour electrophotography

Country Status (7)

Country Link
US (1) US3807998A (en)
JP (1) JPS4938170B1 (en)
CA (1) CA921546A (en)
DE (1) DE2061333C3 (en)
FR (1) FR2073706A5 (en)
GB (1) GB1283808A (en)
NL (1) NL144741B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544619B2 (en) * 1973-06-14 1979-03-08
US4007044A (en) * 1973-12-11 1977-02-08 Ricoh Co., Ltd. Color electrophotographic process
US4275134A (en) * 1974-07-30 1981-06-23 Canon Kabushiki Kaisha Electrophotographic method for reproducing a multicolor image
US5061583A (en) * 1990-01-19 1991-10-29 Minnesota Mining And Manufacturing Company Color electrophotography for high quality half-tone images
JPH04276775A (en) * 1990-12-27 1992-10-01 Xerox Corp Light sensitive body, apparatus and method for forming dichroic image

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178281A (en) * 1956-07-16 1965-04-13 Eastman Kodak Co Electrostatic color printing
US3043686A (en) * 1958-07-08 1962-07-10 Xerox Corp Xerographic color masking
US3457070A (en) * 1964-07-25 1969-07-22 Matsuragawa Electric Co Ltd Electrophotography
US3376133A (en) * 1964-11-25 1968-04-02 Interchem Corp Multicolor electrostatic printing
US3615383A (en) * 1966-05-26 1971-10-26 Canon Camera Co Chargeless electrophotographic printing process
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
US3655369A (en) * 1967-09-05 1972-04-11 Katsuragawa Denki Kk Persistent internal polarization process in electrophotography

Also Published As

Publication number Publication date
DE2061333C3 (en) 1979-02-22
US3807998A (en) 1974-04-30
DE2061333A1 (en) 1971-06-24
JPS4938170B1 (en) 1974-10-16
FR2073706A5 (en) 1971-10-01
DE2061333B2 (en) 1978-06-22
NL7018038A (en) 1971-06-21
NL144741B (en) 1975-01-15
CA921546A (en) 1973-02-20

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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