Patent US4551424A successfully refreshed from Google Patents.
US4551424A
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Silver halide photographic light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1984-12-14
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Granted: 1985-11-05
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Expires: 2004-12-14
Abstract
Abstract A silver halide photographic light-sensitive material is described, comprising a support and at least one silver halide emulsion layer on the support, wherein the silver halide emulsion layer contains at least one specific type of sensitizing dye, at least one of the silver halide emulsion layer and other hydrophilic colloid layers contains at least one compound of four specific types of compounds and the silver halide grains contained in the silver halide emulsion are substantially tetradecahedral grains in which the proportion of (100) faces is at least 50%; this material is superior in both sensitivity and stain resistance.
Inventors
- 👤 Tadashi Ikeda
- 👤 Kenichi Kuwabara
- 👤 Kiyohiko Yamamuro
- 👤 Tadayoshi Kokubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29; G03C1/10; G03C1/12; G03C1/14; G03C1/18; G03C1/38
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
374 words
A silver halide photographic light-sensitive material comprising a support and at least one silver halide emulsion layer on the support, containing at least one sensitizing dye represented by formula (I) ##STR8## wherein R 1 and R 2 each represents a lower alkyl group substituted by a sulfo group, a carboxy group, or a hydroxyl group, provided that at least one of R 1 and R 2 represents a sulfoalkyl group; R 3 represents a hydrogen atom, a lower alkyl group, or a substituted or unsubstituted phenethyl group; R 4 represents a chlorine atom, a methoxy group, an ethoxy group, or a hydrogen atom; R 5 represents a chlorine atom, a phenyl group, a lower alkoxy group, or a lower alkyl group; wherein at least one of the silver halide emulsion layer and other hydrophilic colloid layers contains at least one compound represented by formula (II), (III), (IV), or (V) ##STR9## wherein R 21 represents an alkyl or alkenyl group having from 4 to 16 carbon atoms; R 31 and R 51 each represents an alkyl or alkenyl group having from 5 to 17 carbon atoms; R 32 and R 33 each represents an alkyl group having 4 or less carbon atoms, or a hydroxyalkyl group, provided that the total number of carbon atoms of R 32 and R 33 is 5 or less; R 41 and R 42 each represents an alkyl or alkenyl group having from 4 to 12 carbon atoms, provided that the total number of carbon atoms in R 41 and R 42 is 18 or less; R 51 represents an alkyl or alkenyl group having from 5 to 17 carbon atoms; R 52 represents a methyl group, an ethyl group, or a propyl group; p is an integer of from 1 to 11; q is 2, 3, or 4; r is an integer of from 2 to 8; s is 0 or 1; t is 1, 2, or 3; u is 2, 3, or 4; and M 21 , M 42 and M 51 each represents a hydrogen atom or an alkali metal atom; and the silver halide grains contained in the silver halide emulsion are substantially tetradecahedral grains in which the proportion of (100) faces is at least 50%.
Claim 2
Dependent Claim
374 words
A silver halide photographic light-sensitive material comprising a support and at least one silver halide emulsion layer on the support, containing at least one sensitizing dye represented by formula (I) ##STR8## wherein R 1 and R 2 each represents a lower alkyl group substituted by a sulfo group, a carboxy group, or a hydroxyl group, provided that at least one of R 1 and R 2 represents a sulfoalkyl group; R 3 represents a hydrogen atom, a lower alkyl group, or a substituted or unsubstituted phenethyl group; R 4 represents a chlorine atom, a methoxy group, an ethoxy group, or a hydrogen atom; R 5 represents a chlorine atom, a phenyl group, a lower alkoxy group, or a lower alkyl group; wherein at least one of the silver halide emulsion layer and other hydrophilic colloid layers contains at least one compound represented by formula (II), (III), (IV), or (V) ##STR9## wherein R 21 represents an alkyl or alkenyl group having from 4 to 16 carbon atoms; R 31 and R 51 each represents an alkyl or alkenyl group having from 5 to 17 carbon atoms; R 32 and R 33 each represents an alkyl group having 4 or less carbon atoms, or a hydroxyalkyl group, provided that the total number of carbon atoms of R 32 and R 33 is 5 or less; R 41 and R 42 each represents an alkyl or alkenyl group having from 4 to 12 carbon atoms, provided that the total number of carbon atoms in R 41 and R 42 is 18 or less; R 51 represents an alkyl or alkenyl group having from 5 to 17 carbon atoms; R 52 represents a methyl group, an ethyl group, or a propyl group; p is an integer of from 1 to 11; q is 2, 3, or 4; r is an integer of from 2 to 8; s is 0 or 1; t is 1, 2, or 3; u is 2, 3, or 4; and M 21 , M 42 and M 51 each represents a hydrogen atom or an alkali metal atom; and the silver halide grains contained in the silver halide emulsion are substantially tetradecahedral grains in which the proportion of (100) faces is at least 50%.
Claim 3
Dependent Claim
18 words
A silver halide photographic light-sensitive material as in claim 1, wherein the support is a water-impermeable reflection support.
Claim 4
Dependent Claim
20 words
A silver halide photographic light-sensitive material as in claim 1, wherein said light-sensitive material is a black-and-white reflection light-sensitive material.
Claim 5
Dependent Claim
138 words
A silver halide photographic light-sensitive material as in claim 1, wherein the silver halide emulsion contains at least one sensitizing dye represented by formula (VI) or (VII) ##STR10## wherein R 61 and R 71 each represents an alkyl group having 6 or less carbon atoms, an alkenyl group, or a sulfoalkyl group (wherein the sulfo group may form a salt); R 62 and R 72 each represents a lower alkyl or alkenyl group which may be substituted; and R 63 and R 73 each represents a hydrogen atom, an alkyl group having 4 or less carbon atoms, an alkoxyl group having 4 or less carbon atoms, a chlorine atom, or a fluorine atom, provided that at least one but not all of R 61 and R 62 , or R 71 and R 72 represents a sulfoalkyl group.
Claim 6
Dependent Claim
26 words
A silver halide photographic light-sensitive material as in claim 2, which is processed with a fixing solution containing a polyvalent metal chloride and accompanied by hardening.
Claim 7
Dependent Claim
18 words
A silver halide photographic light-sensitive material as in claim 4, wherein the support is a water-impermeable reflection support.
Claim 8
Dependent Claim
73 words
A silver halide photographic light-sensitive material as in claim 1, wherein the sensitizing dye of formula (I) is used in an amount of from about 2×10 -6 to 8×10 -3 mol per mol of silver halide in the silver halide emulsion, the amount of silver halide emulsion in the silver halide emulsion layer is 2.0 g/m 2 or less calculated as silver, and the proportion of (100) faces is from 50 to 95%.
Claim 9
Dependent Claim
37 words
A silver halide photographic light-sensitive material as in claim 4, wherein the amount of the sensitizing dye of formulae (VI) and (VII) is from about 1/50 to 2 mols per mol of sensitizing dye of formula (I).
Claim 10
Dependent Claim
73 words
A silver halide photographic light-sensitive material as in claim 1, wherein R 1 and R 2 both represent unsubstituted or substituted sulfoalkyl groups having from 2 to 4 carbon atoms; R 3 represents a methyl group, an ethyl group, or a propyl group; R 4 represents a methoxy group, an ethoxy group, or a chlorine atom; and R 5 represents a chlorine atom, a phenyl group, a methoxy group, or an ethoxy group.
Claim 11
Dependent Claim
31 words
A method for processing a silver halide photographic light-sensitive material which comprises processing the silver halide light-sensitive material as in claim 5 with a fixing solution containing a polyvalent metal chloride.
References Cited (Backward Citations)
US2288226A
Cited
US3481742A
Cited
US3759713A
Cited
US3885970A
Cited
US4385110A
Cited
US4463087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |