FR65219E - Photographic inversion process and new products for its implementation - Google Patents
Photographic inversion process and new products for its implementationInfo
- Publication number
- FR65219E FR65219E FR65219DA FR65219E FR 65219 E FR65219 E FR 65219E FR 65219D A FR65219D A FR 65219DA FR 65219 E FR65219 E FR 65219E
- Authority
- FR
- France
- Prior art keywords
- photographic
- implementation
- new products
- inversion process
- inversion
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/485—Direct positive emulsions
- G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
- G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
- G03C1/48561—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent hydrazine compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US218072A US2604400A (en) | 1951-03-28 | 1951-03-28 | Naphthyl hydrazine sulfonic acids in direct positive photographic processes |
Publications (1)
Publication Number | Publication Date |
---|---|
FR65219E true FR65219E (en) | 1956-02-07 |
Family
ID=22813626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR65219D Expired FR65219E (en) | 1951-03-28 | 1952-03-28 | Photographic inversion process and new products for its implementation |
Country Status (5)
Country | Link |
---|---|
US (1) | US2604400A (en) |
BE (1) | BE510220A (en) |
DE (1) | DE925691C (en) |
FR (1) | FR65219E (en) |
GB (1) | GB712355A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE512294A (en) * | 1951-06-27 | |||
NL246283A (en) * | 1958-12-11 |
-
0
- BE BE510220D patent/BE510220A/xx unknown
-
1951
- 1951-03-28 US US218072A patent/US2604400A/en not_active Expired - Lifetime
-
1952
- 1952-03-21 DE DEE5231A patent/DE925691C/en not_active Expired
- 1952-03-28 FR FR65219D patent/FR65219E/en not_active Expired
- 1952-03-28 GB GB8003/52A patent/GB712355A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB712355A (en) | 1954-07-21 |
US2604400A (en) | 1952-07-22 |
DE925691C (en) | 1955-03-28 |
BE510220A (en) |
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