GB1326514A - Process for preparing a positive print from a negative original - Google Patents

Process for preparing a positive print from a negative original

Info

Publication number
GB1326514A
GB1326514A GB5025671A GB5025671A GB1326514A GB 1326514 A GB1326514 A GB 1326514A GB 5025671 A GB5025671 A GB 5025671A GB 5025671 A GB5025671 A GB 5025671A GB 1326514 A GB1326514 A GB 1326514A
Authority
GB
United Kingdom
Prior art keywords
print
preparing
negative
oct
positive
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
GB5025671A
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 GB1326514A publication Critical patent/GB1326514A/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
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
    • G03G5/0622—Heterocyclic compounds
    • G03G5/0644—Heterocyclic compounds containing two or more hetero rings
    • G03G5/0661—Heterocyclic compounds containing two or more hetero rings in different ring systems, each system containing at least one hetero ring
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • 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
    • G03G13/04—Exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • 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
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
    • G03G5/0664—Dyes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1326514 Positive print from negative RANK XEROX Ltd 28 Oct 1971 [31 Oct 1970] 50256/71 Heading G2H [Also in division C4] A temporary positive photo-chromic print produced from a negative is used as an original in the production of a permanent xerographic print. The photo-chromic material may comprise a spyropyran and have an absorbency peak in the range 550-610 mÁ. The electro-photographic material may comprise zinc oxide and a sensitizing dye having a spectral sensitivity of at least 550 mÁ. Examples of spyropyrans and sensitizing dyes are given.
GB5025671A 1970-10-31 1971-10-28 Process for preparing a positive print from a negative original Expired GB1326514A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9622070 1970-10-31

Publications (1)

Publication Number Publication Date
GB1326514A true GB1326514A (en) 1973-08-15

Family

ID=14159138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5025671A Expired GB1326514A (en) 1970-10-31 1971-10-28 Process for preparing a positive print from a negative original

Country Status (3)

Country Link
CA (1) CA940757A (en)
DE (1) DE2154491A1 (en)
GB (1) GB1326514A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1510200A (en) * 1975-10-31 1978-05-10 Oce Van Der Grinten Nv Photoconductive element for electrophotography
DE69025227T2 (en) * 1989-04-25 1996-10-02 Oki Electric Ind Co Ltd Image recording device with a reversible heat-sensitive medium

Also Published As

Publication number Publication date
DE2154491A1 (en) 1972-05-04
CA940757A (en) 1974-01-29

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Legal Events

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