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GB581789A - Improvements in photographic reversal processes - Google Patents

Improvements in photographic reversal processes

Info

Publication number
GB581789A
GB581789A GB6577/44A GB657744A GB581789A GB 581789 A GB581789 A GB 581789A GB 6577/44 A GB6577/44 A GB 6577/44A GB 657744 A GB657744 A GB 657744A GB 581789 A GB581789 A GB 581789A
Authority
GB
United Kingdom
Prior art keywords
colour
emulsions
red
green
silver
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
GB6577/44A
Other languages
English (en)
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB581789A publication Critical patent/GB581789A/en
Priority claimed from GB402849A external-priority patent/GB665682A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/407—Development processes or agents therefor
    • G03C7/413—Developers
    • 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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
GB6577/44A 1942-09-01 1942-09-01 Improvements in photographic reversal processes Expired GB581789A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB657742 1942-09-01
GB402849A GB665682A (en) 1942-09-01 1949-02-14 Improvements in photographic processes

Publications (1)

Publication Number Publication Date
GB581789A true GB581789A (en) 1946-10-24

Family

ID=32232342

Family Applications (2)

Application Number Title Priority Date Filing Date
GB6577/44A Expired GB581789A (en) 1942-09-01 1942-09-01 Improvements in photographic reversal processes
GB12423/42A Expired GB581773A (en) 1942-09-01 1942-09-02 Improvements in photographic reversal processes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB12423/42A Expired GB581773A (en) 1942-09-01 1942-09-02 Improvements in photographic reversal processes

Country Status (6)

Country Link
US (1) US2592298A (xx)
BE (2) BE493810A (xx)
CH (1) CH281461A (xx)
FR (3) FR942478A (xx)
GB (2) GB581789A (xx)
NL (1) NL69460C (xx)

Also Published As

Publication number Publication date
BE468653A (xx)
FR58875E (fr) 1954-04-06
FR942478A (fr) 1949-02-09
GB581773A (en) 1946-10-24
NL69460C (xx)
FR60059E (fr) 1954-09-22
US2592298A (en) 1952-04-08
BE493810A (xx)
CH281461A (fr) 1952-03-15

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