US4581326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color photographic material
Assignee: Konica Minolta Inc
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Filing: 1984-09-06
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Granted: 1986-04-08
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Expires: 2004-09-06
Abstract
Abstract A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of formula (I) and at least one non-color forming phenolic compound: ##STR1## wherein R 1 is an alkyl or aryl group; R 2 is a monovalent group; R 3 is an alkylene group; Y is a halogen atom, a hydroxy or alkyl group; Z is a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; X is a divalent bonding group or an alkylene group having 1 to 5 carbon atoms; m is an integer of 0 to 4; and n is an integer of 0 to 5.
Inventors
- 👤 Katsunori Katoh
- 👤 Satoshi Kawakatsu
- 👤 Kosaku Masuda
- 👤 Kaoru Miyagi
- 👤 Noritaka Nakayama
- 👤 Toshihiko Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; G; G03; G03C; G03C7/00; G03C7/30; G03C7/3003; G03C7/3005; G03C7/3008; G03C7/301
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
124 words
A silver halide color photographic material having at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of formula (I) and at least one non-color forming phenolic compound: ##STR90## wherein R 1 is an alkyl or aryl group; R 2 is a monovalent group; R 3 is an alkylene group; Y is a halogen atom, a hydroxy or alkyl group; Z is a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; X is a divalent bonding group or an alkylene group having 1 to 5 carbon atoms; m is an integer of 0 to 4; and n is an integer of 0 to 5.
Claim 2
Dependent Claim
124 words
A silver halide color photographic material having at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of formula (I) and at least one non-color forming phenolic compound: ##STR90## wherein R 1 is an alkyl or aryl group; R 2 is a monovalent group; R 3 is an alkylene group; Y is a halogen atom, a hydroxy or alkyl group; Z is a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; X is a divalent bonding group or an alkylene group having 1 to 5 carbon atoms; m is an integer of 0 to 4; and n is an integer of 0 to 5.
Claim 3
Dependent Claim
71 words
A silver halide color photographic material according to claim 1, wherein said non-color forming phenolic compound is represented by the following formula (II): ##STR91## wherein R 4 and R 5 are each a halogen atom, an alkyl group, a cycloalkyl group or an alkoxy group; and k is an integer of 0 to 4, provided that when k is 2 or more, R 5 may be the same or different groups.
Claim 4
Dependent Claim
30 words
A silver halide color photographic material according to claim 1, wherein x in said formula (I) is --CH 2 ) l (wherein l is an integer of 1 to 5).
Claim 5
Dependent Claim
20 words
A silver halide color photographic material according to claim 2, wherein k in said formula (II) is 0 or 1.
Claim 6
Dependent Claim
38 words
A silver halide color photographic material according to claim 1, wherein the monovalent group represented by R 2 in said formula (I) is a group selected from among a halogen atom and alkoxy, alkyl, nitro and cyano groups.
Claim 7
Dependent Claim
33 words
A silver halide color photographic material according to claim 2, wherein the alkyl group represented by each of R 4 and R 5 in said formula (II) has 1 to 20 carbon atoms.
Claim 8
Dependent Claim
33 words
A silver halide color photographic material according to claim 2, wherein the alkyl group represented by each of R 4 and R 5 in said formula (II) has 1 to 10 carbon atoms.
Claim 9
Dependent Claim
28 words
A silver halide color photographic material according to claim 1, wherein the alkyl group represented by R 1 in said formula (I) has 1 to 8 carbon atoms.
References Cited (Backward Citations)
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Cited
US4443536A
Cited
US4489155A
Cited
US4526864A
Cited
US4500630A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |