GB856907A - Acid photographic hardener fixing solutions - Google Patents

Acid photographic hardener fixing solutions

Info

Publication number
GB856907A
GB856907A GB15953/59A GB1595359A GB856907A GB 856907 A GB856907 A GB 856907A GB 15953/59 A GB15953/59 A GB 15953/59A GB 1595359 A GB1595359 A GB 1595359A GB 856907 A GB856907 A GB 856907A
Authority
GB
United Kingdom
Prior art keywords
sulphite
hypo
acid
moles
equivalent
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
GB15953/59A
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 GB856907A publication Critical patent/GB856907A/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
    • G03C5/386—Hardening-fixing

Landscapes

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

Abstract

856,907. Photographic processing. KODAK Ltd. May 8, 1959 [May 12, 1958], No. 15953/59. Class 98(2) An acid hardener-fixing solution having a high proportion of sulphite relative to the hypo and with which less hypo is retained in films and papers for a given amount of washing comprises a hardening agent for gelatin, an acid, 0À25 to 1À6 moles of anhydrous alkali metal or ammonium thiosulphate (equivalent to 40 to 250 grams anhydrous hypo) and 0À6 to 1À5 moles of sulphite per mole of thiosulphate per litre, the sulphite including bisulphite if desired and of which 2 moles are calculated as equivalent to 1 mole of sulphite. Potassium alum, ammonium alum and aluminium chloride are quoted as hardening agents, the acid is usually acetic; and the tetrasodium salt of ethylene-diamine tetracetic acid as sequestering agent as for calcium, copper and iron may be included in the solution. Five examples present the washing results using various hypo/sulphite ratios in comparison with such when using the usual hardener-fixing solutions having about 5 or 10 times as much hypo as sulphite.
GB15953/59A 1958-05-12 1959-05-08 Acid photographic hardener fixing solutions Expired GB856907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US734429A US3008828A (en) 1958-05-12 1958-05-12 Acid-type photographic fixer-hardener baths

Publications (1)

Publication Number Publication Date
GB856907A true GB856907A (en) 1960-12-21

Family

ID=24951663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15953/59A Expired GB856907A (en) 1958-05-12 1959-05-08 Acid photographic hardener fixing solutions

Country Status (2)

Country Link
US (1) US3008828A (en)
GB (1) GB856907A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335004A (en) * 1963-12-09 1967-08-08 Eastman Kodak Co Method for stabilization processing of color emulsions

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994729A (en) * 1973-04-06 1976-11-30 Fuji Photo Film Co., Ltd. Method for processing photographic light-sensitive material
GB9001145D0 (en) * 1990-01-18 1990-03-21 Kodak Ltd Thiosulphate fixing solutions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB561095A (en) * 1942-10-31 1944-05-04 Kodak Ltd Improvements in the processing of photographic silver salt emulsions and fixing baths therefor
FR1121989A (en) * 1955-01-31 1956-08-29 Leonar Werke Ag Process for obtaining photographic images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335004A (en) * 1963-12-09 1967-08-08 Eastman Kodak Co Method for stabilization processing of color emulsions

Also Published As

Publication number Publication date
US3008828A (en) 1961-11-14

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