GB782304A - Improvements in or relating to the stabilisation of photographic developers - Google Patents

Improvements in or relating to the stabilisation of photographic developers

Info

Publication number
GB782304A
GB782304A GB1783255A GB1783255A GB782304A GB 782304 A GB782304 A GB 782304A GB 1783255 A GB1783255 A GB 1783255A GB 1783255 A GB1783255 A GB 1783255A GB 782304 A GB782304 A GB 782304A
Authority
GB
United Kingdom
Prior art keywords
stabilisation
relating
photographic developers
sodium
sodium salt
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
GB1783255A
Inventor
Harald Muhr
Anthony Joseph Axford
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford 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 Ilford Ltd filed Critical Ilford Ltd
Priority to GB1783255A priority Critical patent/GB782304A/en
Publication of GB782304A publication Critical patent/GB782304A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

4 - O - Sulphophenyl - 2 - oxytetronimide is prepared by adding in rapid succession to sodium carbonate solution under nitrogen potassium cyanide, glyoxal bisulphite, and benzaldehyde-o-sulphonic acid (sodium salt) and salting out with sodium chloride to obtain the sodium salt.
GB1783255A 1955-06-20 1955-06-20 Improvements in or relating to the stabilisation of photographic developers Expired GB782304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1783255A GB782304A (en) 1955-06-20 1955-06-20 Improvements in or relating to the stabilisation of photographic developers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1783255A GB782304A (en) 1955-06-20 1955-06-20 Improvements in or relating to the stabilisation of photographic developers

Publications (1)

Publication Number Publication Date
GB782304A true GB782304A (en) 1957-09-04

Family

ID=10101991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1783255A Expired GB782304A (en) 1955-06-20 1955-06-20 Improvements in or relating to the stabilisation of photographic developers

Country Status (1)

Country Link
GB (1) GB782304A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057875B (en) * 1957-04-17 1959-05-21 Ilford Ltd Photographic developer for color development
US3330655A (en) * 1963-09-20 1967-07-11 Eastman Kodak Co Preparation of photographic direct positive color images

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057875B (en) * 1957-04-17 1959-05-21 Ilford Ltd Photographic developer for color development
US3330655A (en) * 1963-09-20 1967-07-11 Eastman Kodak Co Preparation of photographic direct positive color images

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