Patent US4800390A successfully refreshed from Google Patents.
Patent US4797350A successfully refreshed from Google Patents.
US4797350A
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US
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Process for forming dye-image using a developer comprising an image stabilizer, a hydroxylamine and not containing benzyl alcohol
Assignee: Konica Minolta Inc
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Filing: 1987-04-06
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Granted: 1989-01-10
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Expires: 2007-04-06
Abstract
Abstract A process for forming a dye image is disclosed, in which a silver halide photographic light-sensitive material having a silver halide emulsion layer is developed by a color developer comprising an aromatic primary amine and an N,N- dialkylhydroxylamine. The silver halide emulsion layer contains a hydrophobic dye-forming coupler and a compound selected from the group consisting of compounds having a sterically hindered phenol group and polyalkylpiperidine compounds or the water soluble acid salt thereof. The dye image having a high maximum density and a high light-fastness can be obtained when the color developer without benzyl alcohol is used.
Inventors
- 👤 Keiji Ohbayashi
- 👤 Shigeo Chino
- 👤 Mitsuhiro Okumura
- 👤 Kaoru Onodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413; G03C7/392; G03C7/39208
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
90 words
A process for forming a dye-image comprising the steps of: imagewise exposing a silver halide photographic light-sensitive material which comprises a support, provided thereon, with at least one silver halide emulsion layer containing a hydrophobic dye-forming coupler and at least one compound selected from the group consisting of compounds having sterically hindbbKred phenol group and polyalkylpiperidine compounds, and color developing said silver halide photographic light-sensitive material with a color developer comprising an aromatic primary amine and an N,N-dialkylhydroxylamine or the water soluble acid salt thereof and not containing benzyl alcohol.
Claim 2
Dependent Claim
90 words
A process for forming a dye-image comprising the steps of: imagewise exposing a silver halide photographic light-sensitive material which comprises a support, provided thereon, with at least one silver halide emulsion layer containing a hydrophobic dye-forming coupler and at least one compound selected from the group consisting of compounds having sterically hindbbKred phenol group and polyalkylpiperidine compounds, and color developing said silver halide photographic light-sensitive material with a color developer comprising an aromatic primary amine and an N,N-dialkylhydroxylamine or the water soluble acid salt thereof and not containing benzyl alcohol.
Claim 3
Dependent Claim
56 words
The process of claim 1, wherein said compounds having sterically hindered phenol group are represented by Formula [I]: ##STR15## wherein R 1 and R 2 are each represent a straight or branched chain alkyl group containing three to eight carbon atoms, R 3 is a k-valent organic group and k is an integer 1 to 6.
Claim 4
Dependent Claim
67 words
The process of claim 1, wherein said polyalkylpiperidine compounds are represented by Formula [II]: ##STR16## wherein R 4 is an alkyl group, an alkenyl group, an alkinyl group, or an acyl group, R 5 is a hydrogen atom or an alkyl group, Y is --O--or ═NR group, R is an alkyl group, R 6 is a l-valent organic group and l is an integer 1 to 4.
Claim 5
Dependent Claim
20 words
The process of claim 1, wherein said hydrophobic dye-forming coupler is a yellow dye-forming coupler or a cyan dye-forming coupler.
Claim 6
Dependent Claim
61 words
The process of claim 2, wherein said hydrophobic coupler is a yellow dye-forming coupler or a cyan dye forming coupler and an amount of the compound represented by Formula [I] contained in said silver halide emulsion layer is from 5 to 100% by weight to said yellow dye-forming coupler or said cyan dye-forming coupler contained in said silver halide emulsion layer.
Claim 7
Dependent Claim
32 words
The process of claim 5, wherein an amount of said compound represented by Formula [I] is from 10 to 50% by weight to said yellow dye-forming coupler or said cyan dye-forming coupler.
Claim 8
Dependent Claim
60 words
The process of claim 3, wherein said hydrophobic coupler is a yellow dye-forming coupler or a cyan dye-forming coupler and an amount of the compound represented by Formula [II] contained in said silver halide emulsion layer is from 5 to 100% by weight to said yellow dye-forming coupler or said cyan dye-forming coupler contained in said silver halide emulsion layer.
Claim 9
Dependent Claim
32 words
The process of claim 7, wherein an amount of said compound represented by Formula [II] is from 10 to 50% by weight to said yellow dye-forming coupler or said cyan dye-forming coupler.
Claim 10
Dependent Claim
109 words
The process of claim 4, wherein said yellow dye-forming coupler contained in said emulsion layer is a yellow dye-forming coupler represented by Formula [III]: ##STR17## wherein R 11 is a halogen atom or an alkoxy group, R 12 is a hydrogen atom, a halogen atom or an alkoxy group, R 13 is an acylamino group, an alkoxycarbonyl group, an alkylsulfamoyl group, an arylsulfamoyl group, an arylsulfonamido group, an alkylureido group, an arylureido group, a succinimido group, an alkoxy group or an aryloxy group and Z 1 is a group capable of being split off upon reaction of the coupler residue with the oxidized product of the color developing agent.
Claim 11
Dependent Claim
40 words
The process of claim 9, wherein said yellow dye-forming coupler represented by Formula [III] contained in said silver halide emulsion layer is from 0.05 to 2 mol per mol of a siver halide contained in said silver halide emulsion layer.
Claim 12
Dependent Claim
40 words
The process of claim 10, wherein said yellow dye-forming coupler represented by Formula [III] contained in said silver halide emulsion layer is from 0.1 to 0.7 mol per mol of a silver halide contained in said silver halide emulsion layer.
Claim 13
Dependent Claim
163 words
The process of claim 4, wherein said cyan dye-forming coupler contained in said emulsion layer is a cyan dye-forming coupler represented by Formula [IV] or [V]: ##STR18## wherein X is a halogen atom, R 20 is an alkyl group containing one to six carbon atoms, R 21 is a ballast group and Z 2 is a group capable of being splitted off upon reaction of the coupler residue with the oxidized product of the color developing agent, ##STR19## wherein R 22 is a hydrogen atom, a halogen atom, an acyl group, an alkyl group or an atomic group necessary to complete a six membered ring together with the group represented by R 23 , R 23 is an alkyl group or an aryl group, R 24 is an alkyl group, a cycloalkyl group, an aryl group or a --NHR 25 group, R 25 is an alkyl group or an aryl group, and Z 3 is the same as Z 2 of Formula [IV].
Claim 14
Dependent Claim
42 words
The process of claim 9, wherein said cyan dye-forming coupler represented by Formula [IV] or [V] contained in said silver halide emulsion layer is from 0.05 to 2 mol per mol of a silver halide contained in said silver halide emulsion layer.
Claim 15
Dependent Claim
42 words
The process of claim 13, wherein said cyan dye-forming coupler represented by Formula [IV] or [IV] contained in said silver halide emulsion layer is from 0.1 to 0.7 mol per mol of a silver halide contained in said silver halide emulsion layer.
Claim 16
Dependent Claim
23 words
The process of claim 1, wherein the alkyl groups of said N,N-dialkyhydroxylamine are each an alkyl group having one to four carbon atoms.
Claim 17
Dependent Claim
24 words
The process of claim 1, wherein said N,N-dialkylhydoxylamine contained in said color developer is 0.2 to 15 g per l of said color developer.
Claim 18
Dependent Claim
24 words
The process of claim 17, wherein said N,N-dialkylhydroxylamine contained in said color developr is 0.5 to 10 g per l of said color developer.
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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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |