GB615218A - Improvements in and relating to photographic colour developers and photographic colour development - Google Patents
Improvements in and relating to photographic colour developers and photographic colour developmentInfo
- Publication number
- GB615218A GB615218A GB33443/45A GB3344345A GB615218A GB 615218 A GB615218 A GB 615218A GB 33443/45 A GB33443/45 A GB 33443/45A GB 3344345 A GB3344345 A GB 3344345A GB 615218 A GB615218 A GB 615218A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photographic colour
- colour
- coupler
- aromatic amino
- photographic
- 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
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
- G03C7/32—Colour coupling substances
- G03C7/36—Couplers containing compounds with active methylene groups
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
615,218. Photographic colour development. GEVAERT PHOTO-PRODUCTEN N. V. Dec. 11, 1945, No. 33443. Convention date, March 17,1941. [Class 98 (ii)] A reducible silver salt image is colour developed with an aromatic amino developing agent in presence of a colour coupler of the formula (CN-CH2-CO-NH-N = )nX, wherein n is 1 or 2 and X is any organic residue containing no reactive methylene group and capable of forming a hydrazone by reaction with a hydrazine. The coupler may be in the developer or a silver halide emulsion layer. The usual aromatic amino developing agents may be used. Formulµ for suitable developing solutions incorporating the couplers are given. Compounds specified are the cyanacetylhydrazones of vanillin, piperonal, phenylacetaldehyde, crotonaldehyde, #-furylacrolein, terephthalaldehyde, pyruvic aldehyde, acetophenone, benzalacetone, mono-bromisatin, 5- nitro-7-methylisatin, cinnamaldehyde and ethyl alpha-phenylacetoacetate. Specification 590,637 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG0103197 | 1941-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB615218A true GB615218A (en) | 1949-01-04 |
Family
ID=7141695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33443/45A Expired GB615218A (en) | 1941-03-17 | 1945-12-11 | Improvements in and relating to photographic colour developers and photographic colour development |
Country Status (5)
Country | Link |
---|---|
US (1) | US2527476A (en) |
BE (1) | BE444782A (en) |
FR (1) | FR880244A (en) |
GB (1) | GB615218A (en) |
NL (1) | NL58029C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2710851A (en) * | 1951-08-22 | 1955-06-14 | Monsanto Chemicals | Cyanoacyl hydrazide resins |
DE963297C (en) * | 1954-07-13 | 1957-05-02 | C Schleussner Fotowerke G M B | Process for producing color photographic images by chromogenic development |
NL246283A (en) * | 1958-12-11 | |||
FR79706E (en) * | 1959-11-13 | 1963-04-17 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1969479A (en) * | 1931-05-11 | 1934-08-07 | Eastman Kodak Co | Method of producing color photographic images by development |
GB458664A (en) * | 1935-03-21 | 1936-12-21 | Eastman Kodak Co | Improvements in and relating to colour forming developers and processes of colour development |
US2266442A (en) * | 1937-04-10 | 1941-12-16 | Eastman Kodak Co | Color print by multiple color development |
BE440740A (en) * | 1940-03-13 |
-
1942
- 1942-03-11 BE BE444782D patent/BE444782A/xx unknown
- 1942-03-16 FR FR880244D patent/FR880244A/en not_active Expired
- 1942-03-17 NL NL105163A patent/NL58029C/xx active
-
1945
- 1945-12-11 GB GB33443/45A patent/GB615218A/en not_active Expired
-
1947
- 1947-03-14 US US734854A patent/US2527476A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL58029C (en) | 1946-08-15 |
BE444782A (en) | 1942-04-30 |
US2527476A (en) | 1950-10-24 |
FR880244A (en) | 1943-03-17 |
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