GB1204964A - Photographic silver halide colour development - Google Patents
Photographic silver halide colour developmentInfo
- Publication number
- GB1204964A GB1204964A GB1790768A GB1790768A GB1204964A GB 1204964 A GB1204964 A GB 1204964A GB 1790768 A GB1790768 A GB 1790768A GB 1790768 A GB1790768 A GB 1790768A GB 1204964 A GB1204964 A GB 1204964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- silver halide
- indazolone
- cooh
- developing solution
- 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
- -1 silver halide Chemical class 0.000 title abstract 8
- 229910052709 silver Inorganic materials 0.000 title abstract 6
- 239000004332 silver Substances 0.000 title abstract 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 125000000896 monocarboxylic acid group Chemical group 0.000 abstract 2
- 239000001828 Gelatine Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 125000001424 substituent group Chemical group 0.000 abstract 1
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
-
- 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
- G03C7/3231—Couplers containing an indazolone ring
Abstract
1,204,964. Photographic silver halide colour development. ILFORD Ltd. April 1, 1969 [April 16, 1968], No.17907/68. Heading G2C. [Also in Division C2] A process of colour development of colour photographic material wherein at least one silver halide emulsion layer containing a developable silver halide is colour developed to yield a dye image, the developed silver and the residual silver halide being removed, comprises developing the photographic material with a colour developing solution in the presence of an image-forming colour coupler and as a competing coupler an indazolone compound of the formula where at least one of the symbols R 1 , R 2 , R 3 and R 4 represents a water-solubilizing group (e.g. -COOH, -SO 3 H, -CH 2 COOH and CH 2 SO 3 H) and the remainder represent hydrogen or substituent groups, the indazolone compound (e.g. where R 1 is COOH and R 2 , R 3 and R 4 are hydrogen) being one which will couple with the oxidized developing agent to form a dye having no affinity for gelatine and which will wash out of the film into the developing solution or a subseauent processing bath. The indazolone compound is preferably present in the colour developing solution at a concentration of 0À5 to 5g. per litre. The compounds 5-chloroindazolone-4-carboxylic acid and indazolone-5- carboxylic acid are disclosed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1790768A GB1204964A (en) | 1968-04-16 | 1968-04-16 | Photographic silver halide colour development |
| BE731606D BE731606A (en) | 1968-04-16 | 1969-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1790768A GB1204964A (en) | 1968-04-16 | 1968-04-16 | Photographic silver halide colour development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1204964A true GB1204964A (en) | 1970-09-09 |
Family
ID=10103349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1790768A Expired GB1204964A (en) | 1968-04-16 | 1968-04-16 | Photographic silver halide colour development |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE731606A (en) |
| GB (1) | GB1204964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415975A (en) * | 1994-05-24 | 1995-05-16 | Minnesota Mining And Manufacturing Company | Contrast-promoting agents in graphic arts media |
-
1968
- 1968-04-16 GB GB1790768A patent/GB1204964A/en not_active Expired
-
1969
- 1969-04-16 BE BE731606D patent/BE731606A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415975A (en) * | 1994-05-24 | 1995-05-16 | Minnesota Mining And Manufacturing Company | Contrast-promoting agents in graphic arts media |
Also Published As
| Publication number | Publication date |
|---|---|
| BE731606A (en) | 1969-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed |