Patent US4232114A successfully refreshed from Google Patents.
US4232114A
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Color photographic light-sensitive elements containing anti-color fogging agents
Assignee: Fujifilm Holdings Corp
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Filing: 1978-09-01
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Granted: 1980-11-04
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Expires: 1998-09-01
Abstract
Abstract A color photographic light-sensitive element having (1) reduced fog, (2) low reduction in sensitivity and (3) good yellow dye image light fastness, and comprising a support having thereon at least one silver halide photographic emulsion and optionally one or more non-light-sensitive subsidiary layers, wherein a blue-sensitive silver halide photographic emulsion layer and/or a non-light-sensitive layer adjacent thereto contains at least one asymmetrical hydroquinone compound selected from the group consisting of 2-methyl-5-tert-octylhydroquinone, 2-tert-butyl-5-tert- amylhydroquinone, 2-tert-butyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-amylhydroquinone, 2-methyl-5-(1'-methylcyclohexyl)hydroquinone and precursors thereof wherein either or both hydroxyl groups are modified with an acyl group represented by the formulae: ##STR1## wherein R represents an alkyl group.
Inventors
- 👤 Keiichi Adachi
- 👤 Tadao Shishido
- 👤 Akio Mitsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39212; G03C7/39216; C; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C07C37/16; C07C39/00; C07C39/24; C07C39/245; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
141 words
A color photographic light-sensitive element comprising a support having thereon a red-sensitive silver halide photographic emulsion layer containing a cyan color-forming coupler, a green-sensitive silver halide photographic emulsion layer containing a magenta color-forming coupler, a blue-sensitive silver halide photographic emulsion layer containing a yellow color-forming coupler and, optionally, one or more non-light-sensitive subsidiary layers, wherein said blue-sensitive silver halide photographic emulsion layer contains at least one asymmetrical hydroquinone compound selected from the group consisting of 2-methyl-5-tert-octylhydroquinone, 2-tert-butyl-5-tert-amylhydroquinone, 2-tert-butyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-amylhydroquinone, 2-methyl-5-(1'-methylcyclohexyl)-hydroquinone, and precursors thereof wherein either or both hydroxyl groups thereof are modified with an acyl group represented by the formulae: ##STR18## wherein R represents an alkyl group, said at least one asymmetrical hydroquinone compound serving to reduce color fogging without reducing the sensitivity and light fastness of a yellow dye image formed in said blue-sensitive silver halide photographic emulsion layer.
Claim 2
Dependent Claim
141 words
A color photographic light-sensitive element comprising a support having thereon a red-sensitive silver halide photographic emulsion layer containing a cyan color-forming coupler, a green-sensitive silver halide photographic emulsion layer containing a magenta color-forming coupler, a blue-sensitive silver halide photographic emulsion layer containing a yellow color-forming coupler and, optionally, one or more non-light-sensitive subsidiary layers, wherein said blue-sensitive silver halide photographic emulsion layer contains at least one asymmetrical hydroquinone compound selected from the group consisting of 2-methyl-5-tert-octylhydroquinone, 2-tert-butyl-5-tert-amylhydroquinone, 2-tert-butyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-amylhydroquinone, 2-methyl-5-(1'-methylcyclohexyl)-hydroquinone, and precursors thereof wherein either or both hydroxyl groups thereof are modified with an acyl group represented by the formulae: ##STR18## wherein R represents an alkyl group, said at least one asymmetrical hydroquinone compound serving to reduce color fogging without reducing the sensitivity and light fastness of a yellow dye image formed in said blue-sensitive silver halide photographic emulsion layer.
Claim 3
Dependent Claim
57 words
The color photographic light-sensitive element as set forth in claim 1, wherein said blue-sensitive silver halide photographic emulsion layer containing a yellow colorforming coupler, said green-sensitive silver halide photographic emulsion layer containing a magenta color-forming coupler and said red-sensitive silver halide photographic emulsion layer containing a cyan color-forming coupler are superimposed on said support in that order.
Claim 4
Dependent Claim
57 words
The color photographic light-sensitive element as set forth in claim 1, wherein said red-sensitive silver halide photographic emulsion layer containing a cyan color-forming coupler, said green-sensitive silver halide photographic emulsion layer containing a magenta color-forming coupler and said blue-sensitive silver halide photographic emulsion layer containing a yellow color-forming coupler are superimposed on said support in that order.
Claim 5
Dependent Claim
57 words
The color photographic light-sensitive element as set forth in claim 1, wherein said blue-sensitive silver halide photographic emulsion layer containing a yellow color-forming coupler, said red-sensitive silver halide photographic emulsion layer containing a cyan color-forming coupler and said green-sensitive silver halide photographic emulsion layer containing a magenta color-forming coupler are superimposed on said support in that order.
Claim 6
Dependent Claim
26 words
The color photographic light-sensitive element as set forth in claim 1, wherein said yellow color-forming coupler is a benzoylacetanilide type coupler or a pivaloylacetanilide type coupler.
Claim 7
Dependent Claim
63 words
The color photographic light-sensitive element as set forth in claim 5, wherein said yellow color-forming coupler is a two-equivalent coupler having a coupling-off group at the coupling position thereof selected from the group consisting of an acyloxy group, a sulfonyloxy group, an aryloxy group, a urethane group, an imido group, a hydantoinyl group, an oxazolidinedione group, a pyridine group and a pyridazone group.
Claim 8
Dependent Claim
48 words
The color photographic light-sensitive element as set forth in claim 5, wherein said yellow color-forming coupler is a two-equivalent coupler having a coupling-off group at the coupling position thereof selected from the group consisting of a phthalimido group, a succinimido group, a 5,5-dimethyl-3-hydantoinyl group and a 2,4-oxazolidinedione group.
Claim 9
Dependent Claim
18 words
The color photographic light-sensitive element as set forth in claim 5, wherein said pivaloylacetanilide type coupler is α-pivaloyl-α-(2,4-dioxo-5,5-dimethyloxazolidine-3-yl)-2-chloro-5-[α-2,4-di-(t-amylphenoxy)butanamido]acetanilide.
Claim 10
Dependent Claim
17 words
The color photographic light-sensitive element as set forth in claim 1, wherein said hydroquinone compound is 2-methyl-5-tert-octylhydroquinone.
Claim 11
Dependent Claim
36 words
The color photographic light-sensitve element as set forth in claim 1, wherein the amount of said asymmetrical hydroquinone compound is about 0.1 to about 150 wt%, based on the weight of said yellow dye forming coupler.
Claim 12
Dependent Claim
19 words
The color photographic light-sensitive element as set forth in claim 1, wherein said R is an unsubstituted alkyl group.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |