GB1204696A - Colour electrophotography - Google Patents

Colour electrophotography

Info

Publication number
GB1204696A
GB1204696A GB5381167A GB5381167A GB1204696A GB 1204696 A GB1204696 A GB 1204696A GB 5381167 A GB5381167 A GB 5381167A GB 5381167 A GB5381167 A GB 5381167A GB 1204696 A GB1204696 A GB 1204696A
Authority
GB
United Kingdom
Prior art keywords
films
yellow
colour
image
superimposed
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
GB5381167A
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.)
Xerox Ltd
Original Assignee
Rank Xerox 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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Publication of GB1204696A publication Critical patent/GB1204696A/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
    • G03G13/01—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
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/12—Recording members for multicolour processes

Abstract

1,204,696. Multi-colour electro-photography. RANK XEROX Ltd. Nov.27, 1967 [Nov.29, 1966], No.53811/67. Heading G2H. A process of multi-colour electro-photography comprises forming electro-photographically different colour images on transparent supports, superimposing one support upon the other, and then superimposing the combined image. Photoconductive layers 12a, 12b, 12c, which are respectively red, green and blue sensitive are carried by conductive layer 11a, 11b, 11c, cyan magenta and yellow images 13a, 13b, 13c are formed in known manner and transferred to transparent films 14a, 14b, 14c before fixing. The films are then superimposed as shown in Fig. 3. The spaces between the films may be filled with transparent resin, e.g., by coating the back of film 14c or the image 13b and film 14b within resin to cause films 14b and 14c to stack together. In another embodiment, the two image carrying films 14a, 14b, Fig.4 are superimposed on a yellow image 13c on the layer 12c. In one example (Example 2) zine oxide paper was negatively charged and then exposed through a mesh screen and red filter to a coloured original. The latent image formed was developed with cyan toner, transferred to a (Registered Trade Mark) "Mylar" film, and fixed. Similarly magenta and yellow colour separation images were produced and the three films superimposed one over another in correct registration. Developers used may be liquid developer comprising kerosene, linseed oil and phthalocyanine blue covered with copolymer of polyvinyl chloride or a powder developer comprising iron powder covered with polyvinyl chloride acetate resin and, cyan magenta or yellow toner mixed with polystyrene.
GB5381167A 1966-11-29 1967-11-27 Colour electrophotography Expired GB1204696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7818966 1966-11-29

Publications (1)

Publication Number Publication Date
GB1204696A true GB1204696A (en) 1970-09-09

Family

ID=13655016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5381167A Expired GB1204696A (en) 1966-11-29 1967-11-27 Colour electrophotography

Country Status (1)

Country Link
GB (1) GB1204696A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089035A (en) * 1973-11-28 1975-07-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089035A (en) * 1973-11-28 1975-07-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee