US4346167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material and process for producing silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1981-07-29
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Granted: 1982-08-24
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Expires: 2001-07-29
Abstract
Abstract A silver halide photographic light-sensitive material is described comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said silver halide emulsion layer containing a rhodium salt in an amount sufficient to increase a contrast thereof, and said silver halide emulsion layer or a layer adjacent thereto containing a compound represented by the following formula (I) or (II), and a process for producing a silver halide photographic emulsion containing rhodium salts is also described which comprises adding a rhodium salt into a silver halide photographic emulsion in an amount sufficient to increase a contrast before the conclusion of first ripening and adding a compound represented by the following formula (I) or (II) into the resulting emulsion after washing to remove useless salts ##STR1## wherein R 1 represents hydrogen or a substituted or unsubstituted alkyl group. The silver halide photographic light-sensitive material and a silver halide photographic emulsion each is capable of providing high contrast images and stabilized photographic properties; particularly, gradation properties remain stable during storage.
Inventors
- 👤 Eiji Imatomi
- 👤 Tsuyoshi Ogawa
- 👤 Tsutomu Hamaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/067; G03C1/09; G03C1/34; Y; Y10; Y10S; Y10S430/00; Y10S430/15
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
70 words
A silver halide photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said silver halide emulsion layer containing a rhodium salt in an amount sufficient to increase a contrast thereof, and said silver halide emulsion layer or a layer adjacent thereto containing a compound represented by formula (I) or (II) ##STR4## wherein R 1 represents hydrogen or a substituted or unsubstituted alkyl group.
Claim 2
Dependent Claim
70 words
A silver halide photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said silver halide emulsion layer containing a rhodium salt in an amount sufficient to increase a contrast thereof, and said silver halide emulsion layer or a layer adjacent thereto containing a compound represented by formula (I) or (II) ##STR4## wherein R 1 represents hydrogen or a substituted or unsubstituted alkyl group.
Claim 3
Dependent Claim
32 words
A silver halide photographic light-sensitive material as in claim 1, wherein said compound contained in said silver halide emulsion layer or a layer adjacent thereto is a compound according to formula (I).
Claim 4
Dependent Claim
32 words
A silver halide photographic light-sensitive material as in claim 1, wherein said compound contained in said silver halide emulsion layer or a layer adjacent thereto is a compound according to formula (II).
Claim 5
Dependent Claim
26 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein the rhodium salt is rhodium chloride, rhodium trichloride, or rhodium ammonium chloride.
Claim 6
Dependent Claim
37 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein the amount of the rhodium salt used is in the range of from 10 -9 to 10 -6 mol per mol of silver.
Claim 7
Dependent Claim
48 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein R 1 represents an alkyl group substituted with one or more substituents selected from a halogen atom, a hydroxy group, a carboxy group, an alkoxy group, and a primary, secondary, or tertiary amino group.
Claim 8
Dependent Claim
30 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein R 1 represents a substituted or unsubstituted alkyl group having from 1 to 5 carbon atoms.
Claim 9
Dependent Claim
34 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein the compound represented by formula (I) or (II) is present in the silver halide emulsion layer containing the rhodium salt.
Claim 10
Dependent Claim
38 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein the compound represented by formula (I) or (II) is present in a layer adjacent to the silver halide emulsion layer containing the rhodium salt.
Claim 11
Dependent Claim
32 words
A silver halide photographic light-sensitive material as in claim 9, wherein the layer adjacent to the silver halide emulsion layer is a surface protective layer, a subbing layer, or an intermediate layer.
Claim 12
Dependent Claim
39 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein the amount of compound represented by formula (I) or (II) is in the range of from 10 -5 to 1.0 mol per mol of silver.
Claim 13
Dependent Claim
40 words
A silver halide photographic light-sensitive material as in claim 1, 2, or 3, wherein the amount of compound represented by formula (I) or (II) is in the range of from 10 -4 to 10 -1 mol per mol of silver.
Claim 14
Dependent Claim
71 words
A process for producing a silver halide photographic emulsion containing rhodium salts which comprises adding a rhodium salt into a silver halide photographic emulsion in an amount sufficient to increase a contrast before the conclusion of first ripening and adding a compound represented by formula (I) or (II) into the resulting emulsion after washing to remove useless salts ##STR5## wherein R 1 represents hydrogen or a substituted or unsubstituted alkyl group.
Claim 15
Dependent Claim
71 words
A process for producing a silver halide photographic emulsion containing rhodium salts which comprises adding a rhodium salt into a silver halide photographic emulsion in an amount sufficient to increase a contrast before the conclusion of first ripening and adding a compound represented by formula (I) or (II) into the resulting emulsion after washing to remove useless salts ##STR5## wherein R 1 represents hydrogen or a substituted or unsubstituted alkyl group.
Claim 16
Dependent Claim
26 words
A process for producing a silver halide photographic emulsion as in claim 13, wherein the rhodium salt is rhodium chloride, rhodium trichloride, or rhodium ammonium chloride.
Claim 17
Dependent Claim
37 words
A process for producing a silver halide photographic emulsion as in claim 13, wherein the amount of the rhodium salt used is in the range of from 10 -9 to 10 -6 mol per mol of silver.
Claim 18
Dependent Claim
48 words
A process for producing a silver halide photographic emulsion as in claim 13, wherein R 1 represents an alkyl group substituted with one or more substituents selected from a halogen atom, a hydroxy group, a carboxy group, an alkoxy group, and a primary, secondary, or tertiary amino group.
Claim 19
Dependent Claim
30 words
A process for producing a silver halide photographic emulsion as in claim 13, wherein R 1 represents a substituted or unsubstituted alkyl group having from 1 to 5 carbon atoms.
Claim 20
Dependent Claim
39 words
A process for producing a silver halide photographic emulsion as in claim 13, wherein the amount of compound represented by formula (I) or (II) is in the range of from 10 -5 to 1.0 mol per mol of silver.
Claim 21
Dependent Claim
40 words
A process for producing a silver halide photographic emulsion as in claim 13, wherein the amount of compound represented by formula (I) or (II) is in the range of from 10 -4 to 10 -1 mol per mol of silver.
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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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |