CH438936A - Use of pyrazines as color bleaching catalysts in the silver color bleaching process - Google Patents

Use of pyrazines as color bleaching catalysts in the silver color bleaching process

Info

Publication number
CH438936A
CH438936A CH361864A CH361864A CH438936A CH 438936 A CH438936 A CH 438936A CH 361864 A CH361864 A CH 361864A CH 361864 A CH361864 A CH 361864A CH 438936 A CH438936 A CH 438936A
Authority
CH
Switzerland
Prior art keywords
color bleaching
pyrazines
catalysts
silver
bleaching process
Prior art date
Application number
CH361864A
Other languages
German (de)
Inventor
Walter Dr Anderau
Wartburg Rene Dr Von
Bernhard Dr Piller
Original Assignee
Ciba Geigy
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
Priority to GB1051970D priority Critical patent/GB1051970A/en
Application filed by Ciba Geigy filed Critical Ciba Geigy
Priority to CH361864A priority patent/CH438936A/en
Priority to ES0310746A priority patent/ES310746A1/en
Priority to FR9441A priority patent/FR1437510A/en
Priority to US440303A priority patent/US3394004A/en
Priority to BE661358A priority patent/BE661358A/xx
Priority to NL6503517A priority patent/NL6503517A/xx
Priority to DEP1269A priority patent/DE1269483B/en
Priority to AT251865A priority patent/AT257358B/en
Publication of CH438936A publication Critical patent/CH438936A/en

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
    • G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
CH361864A 1964-03-20 1964-03-20 Use of pyrazines as color bleaching catalysts in the silver color bleaching process CH438936A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB1051970D GB1051970A (en) 1964-03-20
CH361864A CH438936A (en) 1964-03-20 1964-03-20 Use of pyrazines as color bleaching catalysts in the silver color bleaching process
ES0310746A ES310746A1 (en) 1964-03-20 1965-03-10 Photographic material for the silver dyestuff bleaching process
FR9441A FR1437510A (en) 1964-03-20 1965-03-16 Discoloration catalysts for the silver discoloration process of color images
US440303A US3394004A (en) 1964-03-20 1965-03-16 Photographic material for the silver dyestuff bleaching process
BE661358A BE661358A (en) 1964-03-20 1965-03-19
NL6503517A NL6503517A (en) 1964-03-20 1965-03-19
DEP1269A DE1269483B (en) 1964-03-20 1965-03-19 Use of pyrazines as color bleaching catalysts for the silver color bleaching process
AT251865A AT257358B (en) 1964-03-20 1965-03-19 Color bleaching catalysts for the silver color bleaching process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH361864A CH438936A (en) 1964-03-20 1964-03-20 Use of pyrazines as color bleaching catalysts in the silver color bleaching process

Publications (1)

Publication Number Publication Date
CH438936A true CH438936A (en) 1967-06-30

Family

ID=4259842

Family Applications (1)

Application Number Title Priority Date Filing Date
CH361864A CH438936A (en) 1964-03-20 1964-03-20 Use of pyrazines as color bleaching catalysts in the silver color bleaching process

Country Status (8)

Country Link
US (1) US3394004A (en)
AT (1) AT257358B (en)
BE (1) BE661358A (en)
CH (1) CH438936A (en)
DE (1) DE1269483B (en)
ES (1) ES310746A1 (en)
GB (1) GB1051970A (en)
NL (1) NL6503517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2144298A1 (en) * 1970-09-04 1972-03-09 CIBA Geigy AG, Basel (Schweiz) Quinoxalines and their use in photographic processes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH576158A5 (en) * 1972-02-28 1976-05-31 Ciba Geigy Ag
NL7810745A (en) * 1977-10-28 1979-05-02 Ciba Geigy PROCESS FOR THE MANUFACTURE OF PHOTOGRAPHIC IMAGES.
US4304846A (en) * 1979-02-09 1981-12-08 Ciba-Geigy Ag Method for processing silver dye-bleach materials
EP0517989B1 (en) * 1991-06-11 1998-03-18 JAHLEEL Corporation Bleach bath and its use in a silver dye bleaching process
US5550009A (en) * 1995-04-17 1996-08-27 Eastman Kodak Company Stabilized peroxide bleaching solutions and their use for processing of photographic elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22308E (en) * 1936-12-14 1943-05-11 Production of colored photographic
BE579274A (en) * 1958-06-03

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2144298A1 (en) * 1970-09-04 1972-03-09 CIBA Geigy AG, Basel (Schweiz) Quinoxalines and their use in photographic processes

Also Published As

Publication number Publication date
BE661358A (en) 1965-09-20
DE1269483B (en) 1968-05-30
ES310746A1 (en) 1966-01-01
US3394004A (en) 1968-07-23
AT257358B (en) 1967-10-10
NL6503517A (en) 1965-09-21
GB1051970A (en)

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