GB906034A - Photographic developing and fixing composition and process - Google Patents

Photographic developing and fixing composition and process

Info

Publication number
GB906034A
GB906034A GB3448858A GB3448858A GB906034A GB 906034 A GB906034 A GB 906034A GB 3448858 A GB3448858 A GB 3448858A GB 3448858 A GB3448858 A GB 3448858A GB 906034 A GB906034 A GB 906034A
Authority
GB
United Kingdom
Prior art keywords
photographic
developer
sodium
pyrazolidone
hydroquinone
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
GB3448858A
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.)
CORMAC CHEMICAL CORP
Original Assignee
CORMAC CHEMICAL CORP
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 CORMAC CHEMICAL CORP filed Critical CORMAC CHEMICAL CORP
Publication of GB906034A publication Critical patent/GB906034A/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
    • G03C5/38—Fixing; Developing-fixing; Hardening-fixing
    • G03C5/383—Developing-fixing, i.e. mono-baths

Landscapes

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

Abstract

906,034. Photographic developer/fixer compositions. CORMAC CHEMICAL CORPORATION. Oct. 28, 1958 [Oct. 29, 1957], No. 34488/58. Class 98 (2). A combined developer and fixer for photographic silver halide emulsions comprises an aqueous solution of 1 -phenyl-3-pyrazolidone, hydroquinone, sodium sulphite, sodium thiosulphate and, as alkaline buffer, an alkali metal aluminate or a mixture of sodium hydroxide and potassium alum, the pH of the resulting solution being 11 to 12, the ratio of total developer to sodium thiosulphate being from 1 : 2 to 1 : 20 by weight and the ratio of 1-phenyl- 3-pyrazolidone to hydroquinone being 1 : 40 to 1 : 1 by weight. The compositions may also include photographic glycin, potassium bromide and benztriazole or 6-nitrobenzimidazole.
GB3448858A 1957-10-29 1958-10-28 Photographic developing and fixing composition and process Expired GB906034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69300457A 1957-10-29 1957-10-29

Publications (1)

Publication Number Publication Date
GB906034A true GB906034A (en) 1962-09-19

Family

ID=24782933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3448858A Expired GB906034A (en) 1957-10-29 1958-10-28 Photographic developing and fixing composition and process

Country Status (3)

Country Link
BE (1) BE583400Q (en)
FR (1) FR1204273A (en)
GB (1) GB906034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205124A (en) * 1978-02-09 1980-05-27 The United States Of America As Represented By The Secretary Of The Air Force Low gamma photographic developer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243296A (en) * 1963-02-18 1966-03-29 Fugi Shashin Film Kabushiki Ka Method for stabilizing developed photosensitive materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205124A (en) * 1978-02-09 1980-05-27 The United States Of America As Represented By The Secretary Of The Air Force Low gamma photographic developer

Also Published As

Publication number Publication date
BE583400Q (en) 1960-02-01
FR1204273A (en) 1960-01-25

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