GB900103A - A highly concentrated colour developer - Google Patents

A highly concentrated colour developer

Info

Publication number
GB900103A
GB900103A GB3270759A GB3270759A GB900103A GB 900103 A GB900103 A GB 900103A GB 3270759 A GB3270759 A GB 3270759A GB 3270759 A GB3270759 A GB 3270759A GB 900103 A GB900103 A GB 900103A
Authority
GB
United Kingdom
Prior art keywords
developer
sulphate
sept
sequestering agent
sulphite
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
GB3270759A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 Agfa AG filed Critical Agfa AG
Publication of GB900103A publication Critical patent/GB900103A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/264—Supplying of photographic processing chemicals; Preparation or packaging thereof
    • G03C5/266—Supplying of photographic processing chemicals; Preparation or packaging thereof of solutions or concentrates
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

900,103. Photographic colour developers. AGFA A.G. Sept. 25, 1959 [Sept. 26, 1958], No. 32707/59. Drawings to Specification. Class 98 (2). A photographic colour developer comprises an aqueous solution of pH 10.4 to 10.8 containing as components from 1 to 2 g./l. of an N- alkyl- and/or N-hydroxyalkyl-p-phenylene diamine sulphate, sulphite or hydrochloride, hydroxylamine sulphate, potassium carbonate, potassium bicarbonate, potassium bromide, an alkali metal sulphite and an amino carboxylic acid as a sequestering agent. The developer may be made up as two concentrated solutions, one containing the hydroxylamine sulphate and the N-substituted p-phenylene diamine salt, and the other containing the remaining components, the solutions being mixed and diluted before use. The sequestering agent may be ethylene diamine tetra-acetic acid. A number of very similar developer compositions are described for comparison purposes.
GB3270759A 1958-09-26 1959-09-25 A highly concentrated colour developer Expired GB900103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0030409 1958-09-26

Publications (1)

Publication Number Publication Date
GB900103A true GB900103A (en) 1962-07-04

Family

ID=6927212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3270759A Expired GB900103A (en) 1958-09-26 1959-09-25 A highly concentrated colour developer

Country Status (5)

Country Link
BE (1) BE583020A (en)
CH (1) CH397422A (en)
DE (1) DE1072097B (en)
FR (1) FR1238991A (en)
GB (1) GB900103A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462269A (en) * 1966-08-01 1969-08-19 Minnesota Mining & Mfg Stabilized color developing solution containing diethylenetriamine pentaacetic acid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281594A1 (en) * 1974-08-06 1976-03-05 Hunt Chem Corp Philip A Storage stable, colour developer concentrate giving true colours - contg. an N,N-disubstd. p-phenylene diamine salt with a phosphoric acid
FR2420153A1 (en) * 1978-03-15 1979-10-12 Minnesota Mining & Mfg CONCENTRATED LIQUID COMPOSITIONS OF DEVELOPERS AND THEIR APPLICATION TO COLOR PHOTOGRAPHY

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462269A (en) * 1966-08-01 1969-08-19 Minnesota Mining & Mfg Stabilized color developing solution containing diethylenetriamine pentaacetic acid

Also Published As

Publication number Publication date
FR1238991A (en) 1960-08-19
BE583020A (en)
CH397422A (en) 1965-08-15
DE1072097B (en) 1959-12-24

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