GB1393462A - Photographic silver halide products and diffusion transfer processes - Google Patents
Photographic silver halide products and diffusion transfer processesInfo
- Publication number
- GB1393462A GB1393462A GB1788872A GB1788872A GB1393462A GB 1393462 A GB1393462 A GB 1393462A GB 1788872 A GB1788872 A GB 1788872A GB 1788872 A GB1788872 A GB 1788872A GB 1393462 A GB1393462 A GB 1393462A
- Authority
- GB
- United Kingdom
- Prior art keywords
- complex
- silver halide
- film unit
- layer
- diffusion transfer
- 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
- G03C8/32—Development processes or agents therefor
- G03C8/36—Developers
-
- 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
- G03C8/42—Structural details
- G03C8/52—Bases or auxiliary layers; Substances therefor
-
- 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
- G03C2200/00—Details
- G03C2200/47—Polymer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
1393462 Photographic diffusion transfer material containing particulate developer complex POLAROID CORP 18 April 1972 [19 April 1971] 17888/72 Heading G2C A photographic diffusion transfer film unit comprises a photo-sensitive silver halide layer having associated therewith a dye-developer which is diffusible during processing as a function of imagewise exposure and an image-receiving layer, at least one layer in the film unit comprising a particulate dispersion of a complex of a synthetic polymer with a silver halide developing agent which is dissociable as a function of pH. The synthetic polymer may be wholly synthetic or a synthetically modified naturally occuring polymer. The complex may be a H- bond complex of the synthetic polymer with a benzenoid silver halide developing agent having at least two groups selected from amino and OH, at least one of the groups being substituted in the ortho or para position with respect to another of the groups e.g. a complex of polyvinylpyrrolidone and 4-methylphenyl-hydroquinone which may be present in the green-and blue-sensitive silver halide emulsion layers. Numerous suitable synthetic polymers and developing agents are listed. The complex particles may have a mean particle size not in excess of 1 micron. The complex is preferably water-insoluble and dissociates upon contact with aqueous alkaline processing composition. The film unit may contain an opacifying agent, a rupturable container retaining aqueous alkaline processing composition and an alkali-neutralising layer. The tendency of the auxiliary developing agent to fog silver halide in the film unit is reduced.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13521071A | 1971-04-19 | 1971-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1393462A true GB1393462A (en) | 1975-05-07 |
Family
ID=22467038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1788872A Expired GB1393462A (en) | 1971-04-19 | 1972-04-18 | Photographic silver halide products and diffusion transfer processes |
Country Status (7)
Country | Link |
---|---|
US (1) | US3707370A (en) |
JP (1) | JPS553693B1 (en) |
CA (1) | CA996397A (en) |
DE (1) | DE2219026C2 (en) |
FR (1) | FR2133899B1 (en) |
GB (1) | GB1393462A (en) |
IT (1) | IT952718B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779770A (en) * | 1972-04-24 | 1973-12-18 | Polaroid Corp | A photographic film assemblage for a diffusion transfer film |
JPS6046424B2 (en) * | 1979-01-18 | 1985-10-16 | 三菱製紙株式会社 | photographic materials |
US6479198B2 (en) * | 2000-02-01 | 2002-11-12 | Fuji Photo Film Co., Ltd. | Silver halide light-sensitive material containing tanning developing agent |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3146102A (en) * | 1960-08-22 | 1964-08-25 | Eastman Kodak Co | Photographic multicolor diffusion transfer process using dye developers |
US3415644A (en) * | 1967-03-10 | 1968-12-10 | Polaroid Corp | Novel photographic products and processes |
-
1971
- 1971-04-19 US US135210A patent/US3707370A/en not_active Expired - Lifetime
-
1972
- 1972-04-18 JP JP3906672A patent/JPS553693B1/ja active Pending
- 1972-04-18 CA CA139,967A patent/CA996397A/en not_active Expired
- 1972-04-18 GB GB1788872A patent/GB1393462A/en not_active Expired
- 1972-04-18 IT IT49730/72A patent/IT952718B/en active
- 1972-04-19 DE DE2219026A patent/DE2219026C2/en not_active Expired
- 1972-04-19 FR FR7213808A patent/FR2133899B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2133899A1 (en) | 1972-12-01 |
DE2219026A1 (en) | 1972-10-26 |
FR2133899B1 (en) | 1976-10-29 |
IT952718B (en) | 1973-07-30 |
CA996397A (en) | 1976-09-07 |
JPS553693B1 (en) | 1980-01-26 |
US3707370A (en) | 1972-12-26 |
DE2219026C2 (en) | 1982-04-22 |
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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 |