US3775130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material comprising benzopyrylium dye sensitizer
Assignee: Ricoh Co Ltd
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Filing: 1971-12-23
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Granted: 1973-11-27
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Expires: 1991-12-23
Abstract
Abstract A photosensitive material for producing a photographic recording material, comprising a resinous binder solution containing dispersed therein a photo-polymerizable N-vinyl monomer, a photoactive agent and a dye sensitizer, said dye sensitizer consisting essentially of a salt selected from the group consisting of (1) a benzopyrylium salt and (2) a double complex salt consisting essentially of said benzopyrylium salt and a decolorized derivative of said benzopyrylium salt.
Inventors
- 👤 T Enomoto
- 👤 T Kawanishi
- 👤 A Yasumori
- 👤 T Shiga
- 👤 Y Hirosawa
- 👤 T Kubota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/116; Y10S430/127
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
37 words
A photosensitive material according to claim 1, in which said photo-polymerizable N-vinyl monomer is a member selected from the group consisting of N-vinylindole, N-vinylcarbazole, N-vinyl-phenyl- Alpha -naphthylamine, N-vinylpyrrole, N-vinylpyrrolidone, N-vinyldiphenylamine, N-vinylsuccinimide, N-vinylphthaliumide, N-vinyl-N-phenylacetamide, N-vinyl-N-methylacetamide, N-vinyldigly-collylimide and 3,6-dibromo-N-vinylcarbazole.
Claim 2
Dependent Claim
71 words
A photosensitive material according to claim 1, in which said photo-active halide is selected from the group consisting of chloroform, carbon tetrachloride, carbon tetrabromide, iodoform, hexachloroethane, hexachlorobenzene, tetrabromobutane, tetrachlorotetrahydronaphthalene and polychlorobiphenyl, and the amount of said photo-active halide contained in said resinous binder solution is in the range of from 5 to 100 parts by weight per 100 parts by weight of said N-vinyl monomer contained in said resinous binder solution.
Claim 3
Dependent Claim
94 words
A photosensitive material according to claim 1, in which a resinous binder dissolved in said resinous binder solutions is a member selected from the group consisting of cellulose acetate, cellulose acetate propionate, ethylcellulose, cellulose nitrate, polyvinylchloride, polyvinylidene chloride, polyvinylacetate, polyvinyl acetal, polyvinyl alcohol, polymethyl methacrylate, polystyrene, rubber hydrochloride, gelatine, casein,, carboxymethyl cellulose and gum arabi, and a mixing ratio of said resinous binder against said N-vinyl monomer contained in said resinous binder solution is in the range of from 50 to 500 parts by weight per 100 parts by weight of said N-vinyl monomer.
Claim 4
Dependent Claim
49 words
A photosensitive material according to claim 1, in which the amount of said salt dye sensitizer container in said resinous binder solution is in the range of from 0.001 to 1.0 part by weight per 100 parts by weight of said N-vinyl monomer contained in said resinous binder solution.
Claim 5
Dependent Claim
34 words
A photosensitive material according to claim 1, in which a solvent used in said resinous binder solution is a member selected from the group consisting of water, methylethylketone, ethylacetate, acetone, toluene, trichloroethylene and methyl-alcohol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |