GB804662A - Improvements in sensitive materials for colour photography - Google Patents
Improvements in sensitive materials for colour photographyInfo
- Publication number
- GB804662A GB804662A GB22496/56A GB2249656A GB804662A GB 804662 A GB804662 A GB 804662A GB 22496/56 A GB22496/56 A GB 22496/56A GB 2249656 A GB2249656 A GB 2249656A GB 804662 A GB804662 A GB 804662A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- washed
- layers
- diffusing
- reducing agent
- 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
-
- 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
- G03C7/26—Silver halide emulsions for subtractive colour processes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
804,662. Colour photographic materials. KODAK, Ltd. July 20, 1956 [July 26, 1955], No. 22496/56. Class 98(2) A support bears at least two superposed differentially sensitive silver halide emulsion layers each containing a different non- diffusing colour coupler and each containing a nucleating agent for catalyzing the reduction of or for precipitating dissolved silver salts, and also containing a non- diffusing non-colour forming reducing agent. The emulsion layers may be of the usual red/cyan, green/magenta and blue/ yellow sensitivity/coupler sequence starting from the support and may all be fast, in which case a yellow filter is included beneath the upper layer, or the lower layers may be slow, with omission of the yellow filter. The material may be exposed, black and white developed, acidstopped, washed, then directly colour developed with a developer including a silver halide solvent, stopped, washed, bleached, washed, fixed and washed; thus effecting reversal without re-exposure before the colour development. An example describes production and processing of such material in full detail, using colloidal silver as nucleating agent and 2 : 5-di-sec octyl hydroquinone as the reducing agent referred to above. Numerous similar agents of both types, and also colour formers for the layers are quoted. A somewhat similar procedure in which the non-diffusing. non-colour forming reducing agent is not used, but requiring the presence of additional, barrier, layers containing nuclei between the emulsion layers to check diffusion of silver salts dissolved during colour development is described. Specifications 545,448, 547,064, 562,205, 680,488 and 804,661 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US524362A US2937086A (en) | 1955-07-26 | 1955-07-26 | Multilayer reversal color material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB804662A true GB804662A (en) | 1958-11-19 |
Family
ID=32326797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22496/56A Expired GB804662A (en) | 1955-07-26 | 1956-07-20 | Improvements in sensitive materials for colour photography |
Country Status (3)
Country | Link |
---|---|
US (1) | US2937086A (en) |
FR (1) | FR1155229A (en) |
GB (1) | GB804662A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE584331A (en) * | 1959-11-05 | |||
US3243294A (en) * | 1963-11-06 | 1966-03-29 | Eastman Kodak Co | Photographic direct-positive color process |
US3266894A (en) * | 1964-04-22 | 1966-08-16 | Eastman Kodak Co | Photographic image transfer systems utilizing processing compositions containing high viscosity hydroxyethyl cellulose |
CA1057109A (en) * | 1975-04-10 | 1979-06-26 | Nicholas H. Groet | Enhancement of interimage effects |
GB8309845D0 (en) * | 1983-04-12 | 1983-05-18 | Kodak Ltd | Photographic silver halide dye image-forming elements |
JP2855035B2 (en) * | 1992-10-20 | 1999-02-10 | 富士写真フイルム株式会社 | Silver halide color photographic materials |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2306410A (en) * | 1936-07-07 | 1942-12-29 | Eastman Kodak Co | Color development |
NL59365C (en) * | 1939-11-02 | |||
US2403721A (en) * | 1943-09-23 | 1946-07-09 | Eastman Kodak Co | Preventing color fog in photographic material |
CH278309A (en) * | 1949-07-04 | 1951-10-15 | Bayer Ag | Process for the direct production of positive photographic images. |
US2725298A (en) * | 1952-05-03 | 1955-11-29 | Eastman Kodak Co | Transfer process of photographic printing |
BE519520A (en) * | 1952-05-03 |
-
1955
- 1955-07-26 US US524362A patent/US2937086A/en not_active Expired - Lifetime
-
1956
- 1956-07-20 GB GB22496/56A patent/GB804662A/en not_active Expired
- 1956-07-26 FR FR1155229D patent/FR1155229A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2937086A (en) | 1960-05-17 |
FR1155229A (en) | 1958-04-24 |
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