GB952339A - Improvements in photographic colour processing - Google Patents

Improvements in photographic colour processing

Info

Publication number
GB952339A
GB952339A GB20160/60A GB2016060A GB952339A GB 952339 A GB952339 A GB 952339A GB 20160/60 A GB20160/60 A GB 20160/60A GB 2016060 A GB2016060 A GB 2016060A GB 952339 A GB952339 A GB 952339A
Authority
GB
United Kingdom
Prior art keywords
colour
june
fog
examples
couplers
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
GB20160/60A
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 GB952339A publication Critical patent/GB952339A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/392Additives
    • G03C7/39208Organic compounds
    • G03C7/3924Heterocyclic
    • G03C7/39276Heterocyclic the nucleus containing nitrogen and sulfur

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

952,339. Colour photographic processes. KODAK Ltd. June 8,1960 [June 11,1959],No. 20160/60. Heading G2C. In reversal processing a multilayer material is given a benzothiazolium or naphthothiazolium salt treatment between black and white development and colour development to inhibit the production of colour fog and increase maximum colour density, especially when the emulsions contain gold, sulphur or polyethylene-glycol type chemical sensitisers. Four examples quote decamethylene-bis-benzothiazolium perchlorate (for preparation see Specification 722,237) along with couplers in the colour developers to illustrate this, and give relative speed,D-max and fog figures as compared with a control; the examples using (1) a red-sensitised emulsion, (2) and (4) multilayer materials and (3) a blue sensitive emulsion. Fifteen other thiazolium salts and numerous couplers are listed. Specifications 507,841,622,223,657,749 and U.S.A. Specification 2,566,271 also are referred to.
GB20160/60A 1959-06-11 1960-06-08 Improvements in photographic colour processing Expired GB952339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US819539A US3113864A (en) 1959-06-11 1959-06-11 Reducing fog in reversal color films processed in developers containing couplers

Publications (1)

Publication Number Publication Date
GB952339A true GB952339A (en) 1964-03-18

Family

ID=25228420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20160/60A Expired GB952339A (en) 1959-06-11 1960-06-08 Improvements in photographic colour processing

Country Status (3)

Country Link
US (1) US3113864A (en)
BE (1) BE591664A (en)
GB (1) GB952339A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168400A (en) * 1961-05-22 1965-02-02 Eastman Kodak Co Rapid processing of photographic color materials
US3206310A (en) * 1961-08-25 1965-09-14 Eastman Kodak Co Modification of colloidal metals and metal sulfides to reduce action as a nucleus for physical development
DE1303059B (en) * 1964-03-11
JPS59188641A (en) 1983-04-11 1984-10-26 Fuji Photo Film Co Ltd Silver halide photographic emulsion
KR100938786B1 (en) * 2002-12-12 2010-01-27 스미또모 가가꾸 가부시끼가이샤 Method for producing polarizing film
WO2012035314A1 (en) 2010-09-17 2012-03-22 Fujifilm Manufacturing Europe Bv Photographic paper
GB202006061D0 (en) 2020-04-24 2020-06-10 Fujifilm Mfg Europe Bv Photographic paper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376141A (en) * 1941-12-29 1945-05-15 Eastman Kodak Co Fine grain developers
US2356486A (en) * 1943-04-15 1944-08-22 Eastman Kodak Co Stain prevention in color photography
US2384663A (en) * 1943-08-21 1945-09-11 Eastman Kodak Co Method of preventing aerial oxidation and color stain
US2694716A (en) * 1951-10-17 1954-11-16 Eastman Kodak Co Polymethylene-bis-benzothiazolium salts
US2648604A (en) * 1951-12-28 1953-08-11 Gen Aniline & Film Corp Photographic developer containing a pyridinium salt and process of development
US2899306A (en) * 1957-01-24 1959-08-11 Yh hci

Also Published As

Publication number Publication date
BE591664A (en)
US3113864A (en) 1963-12-10

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