Patent US3870523A successfully refreshed from Google Patents.
US3870523A
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Heat developable photographic material containing azo dyes as sensitizers
Assignee: Fujifilm Holdings Corp
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Filing: 1974-01-17
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Granted: 1975-03-11
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Expires: 1994-01-17
Abstract
Abstract Heat developable photographic materials having at least one photosensitive layer on a support, this 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. AS A SENSITIZER, AT LEAST ONE OF THE FOLLOWING COMPOUNDS (I) and (II): Ar1 - N N - Ar2 (I) Ar3 - N N - Ar4 - N N - Ar5 (II) wherein Ar1, Ar2Ar3 and Ar5 each represents an aryl group and Ar4 represents an arylene group, with the proviso that at least one of Ar1 and Ar2, and at least one of Ar3, Ar4 and Ar5 are substituted with -SO3M or -COOM, M being a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, or a -NH4 group. The sensitizer (e) has a particularly excellent sensitizing effect.
Inventors
- 👤 Shinpei Ikenoue
- 👤 Takao Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845; G03C1/49854
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
158 words
A 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 OG A PHOTOSENSITIVE SILVER HALIDE OR A COMPOUND CAPABLE OF REACTING WITH SAID ORGANIC SILVER SALT (A) TO PRODUCE A PHOTOSENSITIVE SILVER HALIDE, C. REDUCING AGENT, D. A BINDER, AND E. AS A SENSITIZER, AT LEAST ONE OF THE FOLLOWING COMPOUNDS (I) AND (II)AR1 - N = N - AR2 AR3 - N = N - AR4 - N = N - AR5 WHEREIN AR1, AR2, AR3 AND AR5 EACH REPRESENTS AN ARYL GROUP AND AR4 REPRESENTS AN ARYLENE GROUP, WITH THE PROVISO THAT AT LEAST ONE OF AR1 AND AR2 AND AT LEAST ONE OF AR3, AR4 AND AR5 IS SUBSTITUTED WITH A -SO3M GROUP AR A - COOM GROUP, M BEING A HYDROGEN ATOM, AN ALKALI METAL ATOM, AN ALKALINE EARTH METAL ATOM, OR A -NH4 GROUP.
Claim 2
Dependent Claim
158 words
A 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 OG A PHOTOSENSITIVE SILVER HALIDE OR A COMPOUND CAPABLE OF REACTING WITH SAID ORGANIC SILVER SALT (A) TO PRODUCE A PHOTOSENSITIVE SILVER HALIDE, C. REDUCING AGENT, D. A BINDER, AND E. AS A SENSITIZER, AT LEAST ONE OF THE FOLLOWING COMPOUNDS (I) AND (II)AR1 - N = N - AR2 AR3 - N = N - AR4 - N = N - AR5 WHEREIN AR1, AR2, AR3 AND AR5 EACH REPRESENTS AN ARYL GROUP AND AR4 REPRESENTS AN ARYLENE GROUP, WITH THE PROVISO THAT AT LEAST ONE OF AR1 AND AR2 AND AT LEAST ONE OF AR3, AR4 AND AR5 IS SUBSTITUTED WITH A -SO3M GROUP AR A - COOM GROUP, M BEING A HYDROGEN ATOM, AN ALKALI METAL ATOM, AN ALKALINE EARTH METAL ATOM, OR A -NH4 GROUP.
Claim 3
Dependent Claim
158 words
A 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 capable of reacting with said organic silver salt (a) to produce a photosensitive silver halide, c. a reducing agent, d. a binder, and e. as a sensitizer, at least one of the following Compounds (I) and (II): Ar1 - N N - Ar2 (I) AR3 - N N - Ar4 - N N - Ar5 (II) wherein Ar1, Ar2, Ar3 and Ar5 each represents an aryl group and Ar4 represents an arylene group, with the proviso that at least one of Ar1 and Ar2, and at least one of Ar3, Ar4 and Ar5 is substituted with a -SO3M group or a -COOM group, M being a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, or a -NH4 group.
Claim 4
Dependent Claim
158 words
A 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 capable of reacting with said organic silver salt (a) to produce a photosensitive silver halide, c. a reducing agent, d. a binder, and e. as a sensitizer, at least one of the following Compounds (I) and (II): Ar1 - N N - Ar2 (I) AR3 - N N - Ar4 - N N - Ar5 (II) wherein Ar1, Ar2, Ar3 and Ar5 each represents an aryl group and Ar4 represents an arylene group, with the proviso that at least one of Ar1 and Ar2, and at least one of Ar3, Ar4 and Ar5 is substituted with a -SO3M group or a -COOM group, M being a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, or a -NH4 group.
Claim 5
Dependent Claim
48 words
The heat developable photographic material as claimed in claim 1, wherein said Ar1, Ar2, Ar3 and Ar5 groups are substituted or unsubstituted phenyl groups, Alpha -naphthyl groups or Beta -naphthyl groups, and said Ar4 group is a substituted or unsubstituted phenylene group, biphenylene group or a naphthylene group.
Claim 6
Dependent Claim
62 words
The heat developable photographic material as claimed in Claim 2, wherein said aryl and arylene groups are substituted with an alkyl group, a halogen atom, a hydroxyl group, an -SO3M group, a COOM group, an aryl group, a nitro group, an amino group, an alkylamino group, an arylamino group, an acry group, an alkoxy group, an arylsulfonyloxy group, or an alkylsulfonyloxy group.
Claim 7
Dependent Claim
23 words
The heat developable photographic material as claimed in Claim 3, wherein said alkyl, alkoxy and acyl groups have 1 to 8 carbon atoms.
Claim 8
Dependent Claim
23 words
The heat developable photographic material as claimed in claim 4, wherein said alkyl, alKoxy and acyl groups have 1 to 4 carbon atoms.
Claim 9
Dependent Claim
20 words
The heat developable photographic material as claimed in claim 1, wherein said alkali metal is Li, Na, K or Rb.
Claim 10
Dependent Claim
20 words
The heat developable photographic materials as claimed in claim 1, wherein said alkaline earth metal is Ca, Ba, or Mg.
Claim 11
Dependent Claim
24 words
The heat developable photographic material as claimed in claim 1, wherein said sensitizer (e) is selected from the group consisting of the following compounds
Claim 12
Dependent Claim
35 words
The heat developable photographic material as claimed in claim 1, wherein said sensitizer (e) is present in an amount ranging from about 10 6 to 10 2 per 1 mole of said organic silver salt.
Claim 13
Dependent Claim
35 words
The heat developable photographic material as claimed in claim 1, which further contains an optical sensitizing dye in an amount of about 10 6 to 10 2 per 1 mole of said organic silver salt.
Claim 14
Dependent Claim
23 words
The heat developable photographic material as claimed in claim 1, wherein said optical sensitizing dye is a cyanine dye or a merocyanine dye.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |