US4678741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1986-04-14
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Granted: 1987-07-07
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Expires: 2006-04-14
Abstract
Abstract A silver halide photographic material having on a support at least one hydrophilic colloid layer and at least one silver halide emulsion layer containing tabular silver halide grains having a grain diameter of at least 5 times the thickness of the grains and at least one compound represented by general formula (I) ##STR1## wherein R 1 represents a methyl group and R 2 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group.
Inventors
- 👤 Sumito Yamada
- 👤 Masaki Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/0051; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/22; G03C1/46; G03C1/76; G03C1/7614; G03C2001/0055; G03C1/035; G03C2001/03564; G03C2001/7635; G03C7/00; G03C7/30; G03C7/3022; G03C2007/3025; G03C2200/00; G03C2200/27; G03C2200/52
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
79 words
A silver halide photographic material having on a support at least one hydrophilic colloid layer and at least one silver halide emulsion layer containing tabular silver halide grains having a grain diameter of at least 5 times the thickness of the grains and at least one compound represented by general formula (I) ##STR5## wherein R 1 represents a methyl group and R 2 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group.
Claim 2
Dependent Claim
79 words
A silver halide photographic material having on a support at least one hydrophilic colloid layer and at least one silver halide emulsion layer containing tabular silver halide grains having a grain diameter of at least 5 times the thickness of the grains and at least one compound represented by general formula (I) ##STR5## wherein R 1 represents a methyl group and R 2 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group.
Claim 3
Dependent Claim
45 words
The silver halide photographic material as claimed in claim 1, wherein the proportion of the compound represented by general formula (I) is 0.01 to 10 m mole per mole of the silver halide in the silver halide emulsion layer containing the tabular silver halide grains.
Claim 4
Dependent Claim
24 words
The silver halide photographic material as claimed in claim 1, wherein the tabular silver halide grains are silver bromide grains or silver iodobromide grains.
Claim 5
Dependent Claim
28 words
The silver halide photographic material as claimed in claim 1, wherein the silver halide emulsion layer containing the tabular silver halide grains further contains other silver halide grains.
Claim 6
Dependent Claim
53 words
The silver halide photographic material as claimed in claim 1, wherein the photographic material has on a support, in succession, the silver halide emulsion layer containing the tabular silver halide grains and the compound represented by general formula (I), a layer of a high-speed silver halide emulsion layer, and a surface protective layer.
Claim 7
Dependent Claim
52 words
The silver halide photographic material as claimed in claim 1, wherein the photographic material has on a support, in succession, the silver halide emulsion layer containing the tabular silver halide grains and the compound represented by general formula (I), a plurality of conventional silver halide emulsion layers, and a surface protective layer.
Claim 8
Dependent Claim
56 words
The silver halide photographic material as claimed in claim 1, wherein the photographic material has on a support, in succession, a conventional silver halide emulsion layer, the silver halide emulsion layer containing the tabular silver halide grains and the compound represented by general formula (I), a high-speed silver halide emulsion layer, and a surface protective layer.
Claim 9
Dependent Claim
59 words
The silver halide photographic material as claimed in claim 1, wherein the photographic material has on a support, in succession, a layer containing an ultraviolet absorbent or a dye, the silver halide emulsion layer containing the tabular silver halide grains and the compound represented by general formula (I), a conventional silver halide emulsion layer, and a surface protective layer.
Claim 10
Dependent Claim
56 words
The silver halide photographic material as claimed in claim 1, wherein the photographic material has on a support, in succession, the silver halide emulsion layer containing the tabular silver halide grains, the compound represented by general formula (I) and a ultraviolet absorbent or a dye, a conventional silver halide emulsion layer, and a surface protective layer.
Claim 11
Dependent Claim
25 words
The silver halide photographic material as claimed in claim 1, wherein the tabular silver halide grains have a diameter of 0.5 to 5. 0 microns.
Claim 12
Dependent Claim
24 words
The silver halide photographic material as claimed in claim 1, wherein the tabular silver halide grains have a diameter/thickness ratio of 5 to 50.
Claim 13
Dependent Claim
24 words
The silver halide photographic material as claimed in claim 1, wherein the tabular silver halide grains have a diameter/thickness ratio of 7 to 20.
Claim 14
Dependent Claim
47 words
The silver halide photographic material as claimed in claim 1, wherein the tabular silver halide grains are present in an amount of at least about 40% by weight based on the weight of the whole silver halide of the tabular silver halide grains-containing silver halide emulsion layer.
Claim 15
Dependent Claim
47 words
The silver halide photographic material as claimed in claim 1, wherein the tabular silver halide grains are present in an amount of at least about 60% by weight based on the weight of the whole silver halide of the tabular silver halide grains-containing silver halide emulsion layer.
Claim 16
Dependent Claim
24 words
The silver halide photographic material as claimed in claim 1, wherein the material has silver halide emulsion layers on both sides of the support.
Claim 17
Dependent Claim
89 words
A process for forming an image, comprising imagewise exposing and developing a silver halide photographic material having on support at least one hydrophilic colloid layer and at least one silver halide emulsion layer containing tabular silver halide grains having a grain diameter of at least five times the thickness of the grain and at least one compound represented by general formula (I) ##STR6## wherein R 1 represents a methyl group and R 2 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group.
Claim 18
Dependent Claim
89 words
A process for forming an image, comprising imagewise exposing and developing a silver halide photographic material having on support at least one hydrophilic colloid layer and at least one silver halide emulsion layer containing tabular silver halide grains having a grain diameter of at least five times the thickness of the grain and at least one compound represented by general formula (I) ##STR6## wherein R 1 represents a methyl group and R 2 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group.
Claim 19
Dependent Claim
42 words
A process as claimed in claim 16, wherein the proportions of the compound represented by general formula (I) is 0.01 to 10 m mol per mol of the silver halide in the silver halide emulsion layer containing the tabular silver halide grains.
Claim 20
Dependent Claim
21 words
A process as claimed in claim 16, wherein the tabular silver halide grains are silver bromide grains or silver iodobromide grains.
Claim 21
Dependent Claim
21 words
A process as claimed in claim 16, wherein the tabular silver halide grains have a diameter of 0.5 to 5.0 microns.
Claim 22
Dependent Claim
21 words
A process as claimed in claim 16, wherein the tabular silver halide grains have a diameter/thickness ratio of 5 to 50.
Claim 23
Dependent Claim
47 words
A process for forming an image as claimed in claim 16, wherein the tabular sivler halide grains are present in an amount of at least 40% by weight based on the weight of the whole silver hailde of the tabular silver halide grains-containing silver hailde emulsion layer.
Claim 24
Dependent Claim
44 words
A process as claimed in claim 16, wherein the tabular silver halide grains are present in an amount of at least about 60% by weight based on the weight of the whole silver halide of the tabular silver halide grains-containing silver halide emulsion layer.
Claim 25
Dependent Claim
34 words
A process as claimed in claim 16, wherein development is carried out at a temperature of 28° C. to about 50° C. and within 30 seconds and the developer contains an aldehyde hardening agent.
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) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |