GB614808A - Improvements in or relating to photographic printing paper - Google Patents
Improvements in or relating to photographic printing paperInfo
- Publication number
- GB614808A GB614808A GB2284346A GB2284346A GB614808A GB 614808 A GB614808 A GB 614808A GB 2284346 A GB2284346 A GB 2284346A GB 2284346 A GB2284346 A GB 2284346A GB 614808 A GB614808 A GB 614808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- developers
- dye
- image
- printing paper
- 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
- 239000004332 silver Substances 0.000 abstract 6
- 229910052709 silver Inorganic materials 0.000 abstract 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 5
- 239000000975 dye Substances 0.000 abstract 3
- 239000000839 emulsion Substances 0.000 abstract 3
- 239000000543 intermediate Substances 0.000 abstract 2
- -1 silver halide Chemical class 0.000 abstract 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 abstract 1
- FECNOIODIVNEKI-UHFFFAOYSA-N 2-[(2-aminobenzoyl)amino]benzoic acid Chemical class NC1=CC=CC=C1C(=O)NC1=CC=CC=C1C(O)=O FECNOIODIVNEKI-UHFFFAOYSA-N 0.000 abstract 1
- LTZDNAFMPGQDEE-UHFFFAOYSA-N 4-hydroxy-N,1-diphenylpyrazole-3-carboxamide Chemical compound C1(=CC=CC=C1)N1N=C(C(=C1)O)C(=O)NC1=CC=CC=C1 LTZDNAFMPGQDEE-UHFFFAOYSA-N 0.000 abstract 1
- PCKPVGOLPKLUHR-UHFFFAOYSA-N OH-Indolxyl Natural products C1=CC=C2C(O)=CNC2=C1 PCKPVGOLPKLUHR-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 abstract 1
- 229910001864 baryta Inorganic materials 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000001008 quinone-imine dye Substances 0.000 abstract 1
- 239000011347 resin Chemical group 0.000 abstract 1
- 229920005989 resin Chemical group 0.000 abstract 1
- 239000000126 substance Substances 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
- G03C7/3022—Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains
-
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Color Printing (AREA)
Abstract
614,808. Photographic printing paper. DIMSDALE, W. H., and ILFORD, Ltd. July 31, 1946, Nos. 22843 and 37547. [Class 98 (ii)] A photographic printing paper has an emulsion containing silver halide in amount between one and seven milligrams per square decimeter calculated as silver. By use of an aromatic primary amino developer and a dye intermediate which will combine with oxidation products formed during development of the silver image to produce an azomethine or quinoneimine dye, an image of both silver and dye is formed, and this image is of adequate density, which would not be the case with a silver image alone of this low concentration. The dye intermediate, and preferably one including a long chain alkyl group or resin group, or one formed in a resinous medium as described in Specification 524,154, may be present in the emulsion itself or in an adjacent layer, so that commercially available developers such as p-phenylene diamine or N.N-diethyl-p-phenylene diamine may be used. Dye intermediates which give a grey or neutral tone, such as described in Specification 542,149 are desirable. An example indicates the use of a baryta-coated paper with a silver chloridegelatin emulsion containing 1-phenyl-4-hydroxy pyrazole-3-carboxylic acid anilide. In a modification developers which are themselves converted to coloured substances, referred to as Howolka developers, may be used; a second example specifies indoxyl carboxylic acid for this purpose and a list of other developers of this type, giving the colours of the images produced by them, is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2284346A GB614808A (en) | 1946-07-31 | 1946-07-31 | Improvements in or relating to photographic printing paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2284346A GB614808A (en) | 1946-07-31 | 1946-07-31 | Improvements in or relating to photographic printing paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB614808A true GB614808A (en) | 1948-12-23 |
Family
ID=10185939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2284346A Expired GB614808A (en) | 1946-07-31 | 1946-07-31 | Improvements in or relating to photographic printing paper |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB614808A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002477A (en) | 1973-11-28 | 1977-01-11 | Eastman Kodak Company | Diffusion transfer processes and elements using or containing inert transitional metal complex oxidizing agents |
| EP0234292A2 (en) * | 1986-01-23 | 1987-09-02 | Fuji Photo Film Co., Ltd. | Method for forming color image |
| EP0246624A2 (en) * | 1986-05-19 | 1987-11-25 | Fuji Photo Film Co., Ltd. | Method of forming a color image |
-
1946
- 1946-07-31 GB GB2284346A patent/GB614808A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002477A (en) | 1973-11-28 | 1977-01-11 | Eastman Kodak Company | Diffusion transfer processes and elements using or containing inert transitional metal complex oxidizing agents |
| EP0234292A2 (en) * | 1986-01-23 | 1987-09-02 | Fuji Photo Film Co., Ltd. | Method for forming color image |
| EP0234292A3 (en) * | 1986-01-23 | 1989-04-26 | Fuji Photo Film Co., Ltd. | Method for forming color image |
| EP0246624A2 (en) * | 1986-05-19 | 1987-11-25 | Fuji Photo Film Co., Ltd. | Method of forming a color image |
| EP0246624A3 (en) * | 1986-05-19 | 1989-06-07 | Fuji Photo Film Co., Ltd. | Method of forming a color image and silver halide color photographic material |
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