US3909271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat developable photographic material containing sensitizers
Assignee: Fujifilm Holdings Corp
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Filing: 1974-01-31
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Granted: 1975-09-30
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Expires: 1994-01-31
Abstract
Abstract A sensitized heat developable photographic material having at least one photosensitive layer on a support, said layer containing the following components: A. AN ORGANIC SILVER SALT, B. A CATALYTIC AMOUNT OF A PHOTOSENSITIVE SILVER HALIDE OR A COMPOUND WHICH REACTS WITH THE ORGANIC SILVER SALT (A) TO PRODUCE A PHOTOSENSITIVE SILVER HALIDE, C. A REDUCING AGENT, D. A BINDER, AND E. AT LEAST ONE SENSITIZER AS HEREINAFTER DESCRIBED. The compounds (e) are sensitizers providing particularly excellent sensitizing effects.
Inventors
- 👤 Shinpei Ikenoue
- 👤 Takao Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:33
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845; G03C1/49854
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
68 words
A SENSITIZED HEAT DEVELOPABLE PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE PHOTOGRAPHIC LAYER CONTAINING THE FOLLOWING COMPONENTS: A. AN ORGANIC SILVER SALT, B. A CATALYTIC AMOUNT OF A PHOTOSENSITIVE SILVER HALIDE OR A COMPOUND WHICH REACTS WITH SAID ORGANIC SILVER SALT (A) TO PRODUCE A PHOTOSENSITIVE SILVER HALIDE, C. A REDUCING AGENT D. A BINDER, AND E. AT LEAST ONE COMPOUND OF THE FOLLOWING FORMULAE:
Claim 2
Dependent Claim
68 words
A SENSITIZED HEAT DEVELOPABLE PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE PHOTOGRAPHIC LAYER CONTAINING THE FOLLOWING COMPONENTS: A. AN ORGANIC SILVER SALT, B. A CATALYTIC AMOUNT OF A PHOTOSENSITIVE SILVER HALIDE OR A COMPOUND WHICH REACTS WITH SAID ORGANIC SILVER SALT (A) TO PRODUCE A PHOTOSENSITIVE SILVER HALIDE, C. A REDUCING AGENT D. A BINDER, AND E. AT LEAST ONE COMPOUND OF THE FOLLOWING FORMULAE:
Claim 3
Dependent Claim
24 words
The photographic material as claimed in claim 1, wherein said component (e) is selected from the group consisting of compounds having the following formula:
Claim 4
Dependent Claim
34 words
The photographic material as claimed in claim 1, wherein Ar1, Ar2, Ar3, Ar4 and Ar5 each represents an unsubstituted or substituted phenyl group, or an unsubstituted or substituted Alpha - or Beta -naphthyl group.
Claim 5
Dependent Claim
46 words
The photographic material as claimed in claim 3, wherein said aryl group is substituted with an alkyl group, a halogen atom, a hydroxy group, an SO3M group, a COOM group, an aryl group, a nitro group, an amino group, an acyl group or an alkoxy group.
Claim 6
Dependent Claim
18 words
The photographic material as claimed in claim 1, wherein said alkali metal is Li, Na, K or Rb.
Claim 7
Dependent Claim
18 words
The photographic material as claimed in claim 1, wherein said alkaline earth metal is Ca, Mg or Ba.
Claim 8
Dependent Claim
34 words
The photographic material as claimed in claim 1, wherein said alkyl group, alkoxy group, acyl group and alkylamino group represented by Ar1 through Ar5 and R1 through R19 have 1 to 8 carbon atoms.
Claim 9
Dependent Claim
42 words
The photographic material as claimed in claim 1, wherein the substituents of said aryl group and R1 through R19 are a methyl group, an ethyl group, an isopropyl group, a t-butyl group, an ethoxy group, an acetyl group or a dimethylamino group.
Claim 10
Dependent Claim
23 words
The photographic material as claimed in claim 2, wherein R20 through R23 each represents an alkyl group having 1 to 8 carbon atoms.
Claim 11
Dependent Claim
23 words
The photographic material as claimed in claim 9, wherein said alkyl group is substituted with a phenyl group or a sodium sulfophenyl group.
Claim 12
Dependent Claim
31 words
The photographic material as claimed in claim 1, wherein said aryl group represented by R20 through R23 is substituted with a phenyl group, a sodium sulfophenyl group or a tolyl group.
Claim 13
Dependent Claim
22 words
The photographic material as claimed in claim 1, wherein said component (e) is selected from the group consisting of the following compounds
Claim 14
Dependent Claim
34 words
The photographic material as claimed in claim 1, wherein said component (e) is present in an amount ranging from about 10 6 to 10 2 mole per 1 mole of said organic silver salt.
Claim 15
Dependent Claim
32 words
The photographic material as claimed in claim 1, including an optical sensitizing dye, in an amount of about 10 6 to 10 2 mole per 1 mole of said organic silver salt.
Claim 16
Dependent Claim
16 words
The photographic material as claimed in claim 1, including an over-coating layer on said photosensitive layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |