GB1362294A - Photographic colour process and materials therefor - Google Patents
Photographic colour process and materials thereforInfo
- Publication number
- GB1362294A GB1362294A GB5086971A GB5086971A GB1362294A GB 1362294 A GB1362294 A GB 1362294A GB 5086971 A GB5086971 A GB 5086971A GB 5086971 A GB5086971 A GB 5086971A GB 1362294 A GB1362294 A GB 1362294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dye
- layer
- silver halide
- catechol
- hydroquinone
- 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/08—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
1362294 Photographic dye diffusion transfer process EASTMAN KODAK CO 2 Nov 1971 [3 Nov 1970] 50869/71 Heading G2C A photographic assemblage comprises (I) a photo-sensitive element comprising a support having thereon at least one photo-sensitive silver halide emulsion layer which contains or which is contiguous to a layer containing a quinone-coupling dye (i.e. a dye which in alkaline aqueous medium forms a -CH 2 - group and is diffusible therein and which is capable of coupling in the medium with the quinone, formed by oxidation of the hydroquinone or catechol silver halide developing agent, to form a non-diffusible product), (II) a dye imagereceiving layer and (III) a rupturable container containing alkaline processing liquid positioned so that during processing the container's contents are discharged within the assemblage, the assemblage containing a hydroquinone or catechol silver halide developing agent. The invention also comprises a photosensitive element as defined at (I) above containing a hydroquinone or catechol developing agent. The quinone-coupling dye may be a ketomethylene containing compound e.g. a 3- methyl-5-pyrazolone having a dye molecule attached to a N in the ring system and is preferably a compound of the formula:- or where dye is a dye group; n is 0 or 1; Z completes a non-metallic heterocyclic nucleus; X is an anion; and R is H, alkyl, aryl, substituted alkyl or substituted aryl. The hydroquinone or catechol may have one of the formulae: - where R<SP>3</SP> is H, alkyl, alkoxy, halogen or optionally substituted aryl. The photosensitive element may comprise red-, green- and blue-sensitive silver halide emulsion layers each containing or having in a contiguous layer a cyan, magenta and yellow quinonecoupling dye respectively. The assemblage may contain a polymeric acid layer and a timing layer to delay the reduction in pH caused by the polymeric acid layer. The silver halide emulsions may be negative or direct-positive.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8659370A | 1970-11-03 | 1970-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1362294A true GB1362294A (en) | 1974-08-07 |
Family
ID=22199598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5086971A Expired GB1362294A (en) | 1970-11-03 | 1971-11-02 | Photographic colour process and materials therefor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3653896A (en) |
| CA (1) | CA956832A (en) |
| FR (1) | FR2113491A5 (en) |
| GB (1) | GB1362294A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506340A (en) * | 1973-05-16 | 1975-01-23 | ||
| US4141730A (en) * | 1975-04-08 | 1979-02-27 | Fuji Photo Film Co., Ltd. | Multilayer color photographic materials |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3087817A (en) * | 1956-10-03 | 1963-04-30 | Polaroid Corp | Process and product for forming color images from complete dyes |
-
1970
- 1970-11-03 US US86593A patent/US3653896A/en not_active Expired - Lifetime
-
1971
- 1971-10-05 CA CA124,450A patent/CA956832A/en not_active Expired
- 1971-11-02 GB GB5086971A patent/GB1362294A/en not_active Expired
- 1971-11-03 FR FR7139316A patent/FR2113491A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3653896A (en) | 1972-04-04 |
| CA956832A (en) | 1974-10-29 |
| FR2113491A5 (en) | 1972-06-23 |
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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 |