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US4863840A Expired / Lapsed US ⏱️ 0.0 years remaining

Silver halide color photographic light-sensitive material comprising a specific combination of color couplers

Assignee: Konica Minolta Inc
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Filing: 1987-01-13
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Granted: 1989-09-05
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Expires: 2007-01-13
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Abstract

Abstract A silver halide color photographic light-sensitive material is disclosed, which is satifactory in the overall discoloration color balance of a dye image composed of yellow, magenta and cyan dyes in the light discoloration as well as in the dark discoloration and produces little or no yellow color stain when stored being exposed to a light or in the dark over an extensive period of time and which is excellent in the quality of the dye image even when stored over an extensive period of time. The color photographic material comprises a silver halide emulsion layers containing a specific yellow dye-forming coupler, a silver halide emulsion layer containing a specific magenta dye-forming coupler and a silver halide emulsion layer containing two kinds of specific cyan dye-forming couplers, and the respective emulsion layers each contain high-boiling organic solvent having a dielectric constant of not more than 6.0.

Inventors

  • 👤 Kazuo Komorita
  • 👤 Kaoru Onodera

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 15:59
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3225

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 323 words
A silver halide color photographic light-sensitive material which comprises a support having thereon a silver halide emulsion layer containing a yellow dye-forming coupler represented by the following Formula [I], a silver halide emulsion layer containing a magenta dye-forming coupler represented by the following Formula [II], a silver halide emulsion layer containing both of a cyan dye-forming coupler represented by following Formula [III-1] and a cyan due-forming coupler represented by the following Formula [III-2], said emulsion layers containing said couplers and further containing a high-boiling organic solvent having a dielectric constant of not more than 6.0: ##STR270## wherein R 1 is an alkyl group, R 2 is an aryl group and Z 1 is a hydrogen atom or a group capable of being splitted off from the coupler residue upon reaction with an oxidized product of a color developing agent, ##STR271## wherein R is a hydrogen atom or a substituent, Z is a group of non-metallic atoms necessary to form a nitrogen-containing heterocyclic ring, provided that said heterocyclic ring formed by Z is allowed to have a substituent, X is a group capable of being split off from the coupler residue upon reaction with an oxidized product of a color developing agent, ##STR272## wherein R 21 is an alkyl group, or an aryl group, R 22 is an alkyl group, acycloalkyl group, an aryl group or a heterocyclic group, R 23 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, said R 23 being allowed to combine with said R 21 to form a cyclic ring, and Z 2 is a group capable of being split off from the coupler residue upon reaction with an oxidized product of a color developing agent, ##STR273## wherein R 24 is a straight-chain or branched-chain alkyl group having from 2 to 4 carbon atoms, R 25 is a ballasting group, and Z 2 is as defined in said Z 2 of formula [III-1].
Claim 2
Dependent Claim 323 words
A silver halide color photographic light-sensitive material which comprises a support having thereon a silver halide emulsion layer containing a yellow dye-forming coupler represented by the following Formula [I], a silver halide emulsion layer containing a magenta dye-forming coupler represented by the following Formula [II], a silver halide emulsion layer containing both of a cyan dye-forming coupler represented by following Formula [III-1] and a cyan due-forming coupler represented by the following Formula [III-2], said emulsion layers containing said couplers and further containing a high-boiling organic solvent having a dielectric constant of not more than 6.0: ##STR270## wherein R 1 is an alkyl group, R 2 is an aryl group and Z 1 is a hydrogen atom or a group capable of being splitted off from the coupler residue upon reaction with an oxidized product of a color developing agent, ##STR271## wherein R is a hydrogen atom or a substituent, Z is a group of non-metallic atoms necessary to form a nitrogen-containing heterocyclic ring, provided that said heterocyclic ring formed by Z is allowed to have a substituent, X is a group capable of being split off from the coupler residue upon reaction with an oxidized product of a color developing agent, ##STR272## wherein R 21 is an alkyl group, or an aryl group, R 22 is an alkyl group, acycloalkyl group, an aryl group or a heterocyclic group, R 23 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, said R 23 being allowed to combine with said R 21 to form a cyclic ring, and Z 2 is a group capable of being split off from the coupler residue upon reaction with an oxidized product of a color developing agent, ##STR273## wherein R 24 is a straight-chain or branched-chain alkyl group having from 2 to 4 carbon atoms, R 25 is a ballasting group, and Z 2 is as defined in said Z 2 of formula [III-1].
Claim 3
Dependent Claim 27 words
The silver halide color photographic light-sensitive material of claim 1, wherein said high-boiling organic solvent has a dielectric constant within the range of from 1.9 to 6.0.
Claim 4
Dependent Claim 18 words
The silver halide color photographic light-sensitive material of claim 1, wherein said high-boiling organic solvent is a phthalate.
Claim 5
Dependent Claim 245 words
The silver halide color photographic light-sensitive material of claim 1, wherein said silver halide emulsion layer containing said yellow dye-forming coupler represented by Formula [I] and said silver halide emulsion layer containing said cyan-dye forming coupler represented by Formula [III-1] and said cyan-dye forming coupler represented by Formula [III-2], said layers further contain at least one of the compound represented by each of the following Formula [a] and [b], respectively, ##STR274## wherein R 41 and R 42 each is an alkyl group, R 43 is an alkyl group, a --NR' R" group, a --SR' group or a --COOR" group, wherein R' is a monovalent organic group and R" is a hydrogen atom or a monovalent organic group, and n is an integer of from zero to 3, ##STR275## wherein R 44 is a hydrogen atom, a hydroxy group, an oxy radical (O), a --SOR', an alkyl group, an alkenyl group, an alkinyl group or a COR" group, werein R' is a monovalent organic group and R" is a hydrogen atom or a monovalent organic group, R 45 , R 46 , R' 45 , R' 46 and R 49 each is an alkyl group, R 47 and R 48 each is a hydrogen atom or a --OCOR 50 , wherein R 50 is a monovalent organic group, or R 47 and R 48 are allowed to form a heterocyclic group in cooperation with each other, and n is an integer of from zero to 4.
Claim 6
Dependent Claim 39 words
The silver halide color photographic light-sensitive material of claim 1, wherein said cyan eye-forming coupler represented by Formula [III-1] and said cyan dye-forming coupler represented by Formula [III-2] are used in the proportional range of from 10:90 to 90:10.

References Cited (Backward Citations)

US3772002A Cited
US4609618A Cited
US4614709A Cited
US4622287A Cited
US4639415A Cited
US4607002A Cited
US4692399A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-09-04 1993-03-06 1993-09-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-09-04 1997-03-06 1997-09-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-09-04 2001-03-06 2001-09-05 $7700.00 Window Closed / Lapsed

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