EP0256531A2
Expired / Lapsed
EP
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Silver halide color photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1987-08-13
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Granted: —
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Expires: 2007-08-13
Abstract
Abstract A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a dispersion, said dispersion comprising oleophilic fine particles containing (a) at least one oil-soluble cyan coupler represented by formula (I) (described herein) capable of forming substantially non-diffusible cyan dye upon coupling with an oxidation product of an aromatic primary amine developing agent, and (b) a water-insoluble, organic solvent-soluble homopolymer or copolymer comprising not more than about 20% by weight of a repeating unit having an acid radical in the main chain or a side chain thereof, wherein the dispersion does not contain high-boiling point organic solvents. The photographic material provides color images excellent in preservability, particularly resistance to dark discoloration and light discoloration in good balance.
Inventors
- 👤 Osamu Fuji Photo Film Co. Ltd. Takahashi
- 👤 Tsumoru Fuji Photo Film Co. Ltd. Hirano
- 👤 Seiki Fuji Photo Film Co. Ltd. Sakanoue
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 12:06
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3882; G03C7/32; G03C7/34; G03C7/346
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a dispersion, said dispersion comprising oleophilic fine particles containing (a)at least one oil-soluble cyan coupler represented by formula (I) wherein R₁ represents a hydrogen atom or a halogen atom; R₂ represents a straight chain or branched chain, substituted or unsubstituted alkyl group having from 2 to l5 carbon atoms; R₃ represents a ballast group; and X represents a hydrogen atom or a coupling releasable group, said coupler being capable of forming a substantially non-diffusible cyan dye upon coupling with an oxidation product of an aromatic primary amine developing agent, and (b) a water-insoluble, organic solvent-soluble homopolymer or copolymer comprising not more than about 20% by weight of a repeating unit having an acid radical in the main chain or a side chain thereof, where in said dispersion does not contain high-boiling point organic solvents.
Claim 2
Dependent Claim
153 words
A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a dispersion, said dispersion comprising oleophilic fine particles containing (a)at least one oil-soluble cyan coupler represented by formula (I) wherein R₁ represents a hydrogen atom or a halogen atom; R₂ represents a straight chain or branched chain, substituted or unsubstituted alkyl group having from 2 to l5 carbon atoms; R₃ represents a ballast group; and X represents a hydrogen atom or a coupling releasable group, said coupler being capable of forming a substantially non-diffusible cyan dye upon coupling with an oxidation product of an aromatic primary amine developing agent, and (b) a water-insoluble, organic solvent-soluble homopolymer or copolymer comprising not more than about 20% by weight of a repeating unit having an acid radical in the main chain or a side chain thereof, where in said dispersion does not contain high-boiling point organic solvents.
Claim 3
Dependent Claim
218 words
A silver halide color photographic material as in claim l, wherein said cyan coupler is represented by formula (II) wherein X is as defined in claim l; R₂ʹ represents an alkyl group having from 2 to 4 carbon atoms; R₄ and R₅, which may be the same or different, each represents a hydrogen atom or an alkyl group; n represents 0 or an integer of from l to 3; Z represents an alkyl group having from l to l6 carbon atoms; m represents an integer of from l to 2; and the total number of carbon atoms in (Z) m , R₄, and R₅ is at least 8; or said cyan coupler is represented by formu.a (III) wherein R₂ and X are as defined in claim l; and R₆ represents an unsubstituted straight chain or branched chain aliphatic hydrocarbon group, or a straight chain or branched chain aliphatic hydrocarbon group substituted with at least one of a chlorine atom, an alkoxy group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, a sulfonamido group, an acylamino group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkylcarbonyloxy group, an alkyloxycarbonyl group, a carboxyl group, and a hydroxyl group; or R₆ represents a divalent group capable of linking to form a dimer or higher polymer.
Claim 4
Dependent Claim
24 words
A silver halide color photographic material as in claim l, wherein said homopolymer or copolymer comprises a repeating unit having a - - bond.
Claim 5
Dependent Claim
24 words
A silver halide color photographic material as in claim l, wherein said homopolymer or copolymer comprises a repeating unit having a - -O- bond.
Claim 6
Dependent Claim
48 words
A silver halide color photographic material as in claim l, wherein said homopolymer or copolymer comprises a repeating unit having a group at said chain thereof, wherein G₁ and G₂ each represents a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.
Claim 7
Dependent Claim
39 words
A silver halide color photographic material as in claim l, wherein said dispersion is obtained by dissolving said coupler and said homopolymer or copolymer in a low-boiling point organic solvent and dispersing the resulting solution in a hydrophilic binder.
Claim 8
Dependent Claim
44 words
A silver halide color photographic material as in claim l, wherein said dispersion is obtained by polymerizing a monomer or monomers constituting said homopolymer or copolymer by suspension polymerization, solution polymerization or bulk polymerization, and dispersing the resulting polymerization mixture in a hydrophilic binder.
Claim 9
Dependent Claim
38 words
A silver halide color photographic material as in claim l, wherein said homopolymer or copolymer comprises not more 5% by weight of a repeating unit having an acid radical in the main chain or a side chain thereof.
Claim 10
Dependent Claim
32 words
A silver halide color photographic material as in claim l, wherein said homopolymer or copolymer has no repeating unit having an acid radical in the main chain or a side chain thereof.
References Cited (Backward Citations)
No citation records indexed.
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