GB1327684A - Photographic silver dye-bleach process - Google Patents
Photographic silver dye-bleach processInfo
- Publication number
- GB1327684A GB1327684A GB3143671A GB3143671A GB1327684A GB 1327684 A GB1327684 A GB 1327684A GB 3143671 A GB3143671 A GB 3143671A GB 3143671 A GB3143671 A GB 3143671A GB 1327684 A GB1327684 A GB 1327684A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dye
- image
- halide emulsion
- free
- silver halide
- 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
- G03C7/28—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)
Abstract
1327684 Photographic silver dye-bleach process CIBA-GEIGY AG 5 July 1971 [7 July 1970] 31436/71 Heading G2C A photographic material comprising on a support at least one diffusion-resistant, bleachable image dye-containing silver halide emulsion layer and immediately beneath it on the side facing the support a silver halide emulsion layer free of image dyestuff is exposed and processed to a dye image in the presence of a dye bleaching catalyst, whereby the dye image is produced exclusively by the image dyes present in the material before exposure. The dye-free silver halide emulsion layer may have a sensitivity at least as high as the dyecontaining silver halide emulsion layer. The sensitivity of the dye free silver halide emulsion layer may be regulated so that the colour gradation curve is linearized by correction of the foot of the curve. The adjacent dye-free and dye-containing silver halide emulsion layers may be optically sensitized in the same spectral range e. g. with the same sensitizer. The image dye may be an azo dye. The dye-free layer may be sensitized outside or in the absorption range of the dye of the overlying layer. The image dye is bleached under the influence of the silver image produced in the dyed layer and in the underlying image dye-free layer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1026570A CH542462A (en) | 1970-07-07 | 1970-07-07 | A method for producing a color photographic image by the silver dye bleaching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1327684A true GB1327684A (en) | 1973-08-22 |
Family
ID=4361306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3143671A Expired GB1327684A (en) | 1970-07-07 | 1971-07-05 | Photographic silver dye-bleach process |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3754915A (en) |
| BE (1) | BE769545A (en) |
| CA (1) | CA995050A (en) |
| CH (1) | CH542462A (en) |
| DE (1) | DE2132836A1 (en) |
| FR (1) | FR2100278A5 (en) |
| GB (1) | GB1327684A (en) |
| NL (1) | NL167524C (en) |
| SU (1) | SU456434A3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH633641A5 (en) * | 1977-07-21 | 1982-12-15 | Ciba Geigy Ag | METHOD FOR PRODUCING MASKED POSITIVE COLOR IMAGES BY THE SILVER COLORING METHOD. |
| EP0286593A3 (en) * | 1987-04-06 | 1989-09-06 | Ciba-Geigy Ag | Process for producing colour-positive masked images according to the silver dye-bleaching process |
-
1970
- 1970-07-07 CH CH1026570A patent/CH542462A/en not_active IP Right Cessation
-
1971
- 1971-07-01 DE DE19712132836 patent/DE2132836A1/en not_active Withdrawn
- 1971-07-05 GB GB3143671A patent/GB1327684A/en not_active Expired
- 1971-07-06 FR FR7124583A patent/FR2100278A5/fr not_active Expired
- 1971-07-06 CA CA119,143A patent/CA995050A/en not_active Expired
- 1971-07-06 BE BE769545A patent/BE769545A/en unknown
- 1971-07-06 NL NL7109326.A patent/NL167524C/en not_active IP Right Cessation
- 1971-07-07 US US00160558A patent/US3754915A/en not_active Expired - Lifetime
- 1971-07-07 SU SU1688338A patent/SU456434A3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| CA995050A (en) | 1976-08-17 |
| US3754915A (en) | 1973-08-28 |
| BE769545A (en) | 1972-01-06 |
| FR2100278A5 (en) | 1972-03-17 |
| CH542462A (en) | 1973-09-30 |
| SU456434A3 (en) | 1975-01-05 |
| NL7109326A (en) | 1972-01-11 |
| NL167524C (en) | 1981-12-16 |
| NL167524B (en) | 1981-07-16 |
| DE2132836A1 (en) | 1972-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |