GB660856A - Improvements in or relating to photographic materials - Google Patents
Improvements in or relating to photographic materialsInfo
- Publication number
- GB660856A GB660856A GB9811/49A GB981149A GB660856A GB 660856 A GB660856 A GB 660856A GB 9811/49 A GB9811/49 A GB 9811/49A GB 981149 A GB981149 A GB 981149A GB 660856 A GB660856 A GB 660856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compounds
- developing
- fixing
- compound
- photographic
- 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
- 239000000463 material Substances 0.000 title abstract 7
- 150000001875 compounds Chemical class 0.000 abstract 5
- 239000000839 emulsion Substances 0.000 abstract 5
- 108010010803 Gelatin Proteins 0.000 abstract 2
- 229910021607 Silver chloride Inorganic materials 0.000 abstract 2
- 229920000159 gelatin Polymers 0.000 abstract 2
- 239000008273 gelatin Substances 0.000 abstract 2
- 235000019322 gelatine Nutrition 0.000 abstract 2
- 235000011852 gelatine desserts Nutrition 0.000 abstract 2
- -1 silver halide Chemical class 0.000 abstract 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 1
- 150000002391 heterocyclic compounds Chemical class 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 125000001624 naphthyl group Chemical group 0.000 abstract 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
- G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/13—Antibronze agent or process
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
660,856. Photographic light-sensitive materials. ILFORD, Ltd. April 5, 1950 [April 11, 1949], No. 9811/49. Class 98 (ii). The quality of the images developed in photographic silver halide emulsions is improved by applying to the emulsions, e.g. by including in the emulsion, or in another layer of the photographic material, or in a developing, fixing, or other processing bath (e.g. a glazing bath) with which the material is treated, a heterocyclic compound of the general formula wherein R is H or a hydrocarbon group, e.g. an alkyl (methyl or ethyl), aralkyl (benzyl), or aryl (phenyl or naphthyl) group. The compounds may be used as free bases, as ammonium or alkali metal salts, or as substantially waterinsoluble colourless metal derivatives. More than one compound of the general formula may be used, and the compound or compounds may be used in more than one way, e.g. in both an overcoating layer and the developing solution, or in both developing and fixing solutions. Mixtures of the compounds with those of Specifications 573,745 and 583,648 may be used. In example 1, a gelatin overcoating layer containing 3-thio-5-iminourazole is applied over both silver chloride and silver bromide emulsion layers on paper supports, and the maximum densities after cold-drying and hot glazing of these materials are compared with those for similar materials having plain gelatin overcoating layers. In example 2, the maximum density for an exposed silver chloride emulsion developed in a. metol-hydroquinone developer, fixed, and hot-glazed is compared with the maximum densities of material similarly treated, but in which the developer or the fixing bath contains 3 - thio - 5 phenyliminourazole.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9811/49A GB660856A (en) | 1949-04-11 | 1949-04-11 | Improvements in or relating to photographic materials |
| US155356A US2590775A (en) | 1949-04-11 | 1950-04-11 | Silver halide emulsion containing a thio-imino-urazole as a stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9811/49A GB660856A (en) | 1949-04-11 | 1949-04-11 | Improvements in or relating to photographic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB660856A true GB660856A (en) | 1951-11-14 |
Family
ID=9879237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9811/49A Expired GB660856A (en) | 1949-04-11 | 1949-04-11 | Improvements in or relating to photographic materials |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2590775A (en) |
| GB (1) | GB660856A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL95865C (en) * | 1953-09-04 | |||
| US2857275A (en) * | 1954-11-08 | 1958-10-21 | Polaroid Corp | Photographic compositions and processes |
| DE1068118B (en) * | 1954-11-23 | 1959-10-29 | ||
| GB1138587A (en) * | 1966-02-14 | 1969-01-01 | Agfa Gevaert Nv | Improvements in or relating to photographic material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1560240A (en) * | 1924-08-11 | 1925-11-03 | Jelley Edwin Ernest | Photographic sensitizer |
| BE475247A (en) * | 1940-10-15 | |||
| US2363493A (en) * | 1941-06-13 | 1944-11-28 | Du Pont | Photographic processes and compositions |
-
1949
- 1949-04-11 GB GB9811/49A patent/GB660856A/en not_active Expired
-
1950
- 1950-04-11 US US155356A patent/US2590775A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2590775A (en) | 1952-03-25 |
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