Patent EP0121365A2 successfully refreshed from Google Patents.
EP0121365A2
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EP
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Color photographic silver halide light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1984-03-14
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Granted: —
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Expires: 2004-03-14
Abstract
Abstract Color photographic silver halide light-sensitive material contains, in a silver halide emulsion or intermediate layer, a cyan coupler of general formula (I): where R, is H, halogen, or C1-20 alkyl or alkoxy, R 2 is C1-20 alkyl, R 3 is H, halogen or alkyl, X is a coupling releasable group (e.g. H or Cl) andn = 1 or 2; preferably in amount of 0.01 to 5 x 10 -1 mole/mole Hg. 14 specific couplers are shown, and a synthesis is described. They can be easily dissolved in an organic solvent and the solution dispersed in the hydropholic colloid for coating. The couplers exhibit a high dye-forming rate is developers, and provide color images of high fastness.
Inventors
- 👤 Kozo Acki
- 👤 Akira Ogawa
- 👤 Osami Tanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 10:21
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/346
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A color photographic silver halide light-sensitive material, comprising: a support having thereon: a silver halide emulsion layer comprised of silver halide particles dispersed in a binder; and a cyan dye-forming coupler represented by general formula (I): wherein R I is a hydrogen atom, a halogen atom, or a straight chain alkyl or alkoxy group having 1 to 20 carbon atoms, R 2 is an alkyl group having 1 to 20 carbon atoms, R 3 is a hydrogen atom, a halogen atom, or an alkyl group, X is a group to be released at the time of oxidative coupling with a developing agent, and n is an integer of 1 or 2.
Claim 2
Dependent Claim
111 words
A color photographic silver halide light-sensitive material, comprising: a support having thereon: a silver halide emulsion layer comprised of silver halide particles dispersed in a binder; and a cyan dye-forming coupler represented by general formula (I): wherein R I is a hydrogen atom, a halogen atom, or a straight chain alkyl or alkoxy group having 1 to 20 carbon atoms, R 2 is an alkyl group having 1 to 20 carbon atoms, R 3 is a hydrogen atom, a halogen atom, or an alkyl group, X is a group to be released at the time of oxidative coupling with a developing agent, and n is an integer of 1 or 2.
Claim 3
Dependent Claim
65 words
A material as claimed in Claim 1, wherein X is a hydrogen atom, a halogen atom, an alkoxy group having 1 to 32 carbon atoms, an aryloxy group having 6 to 32 carbon atoms, an acyloxy group, a sulfonyloxy group, an amido group, an alkoxycarbonyloxy group having 2 to 33 carbon atoms, an aryloxycarbonyloxy group having 7 to 33 carbon atoms or an imido group.
Claim 4
Dependent Claim
24 words
A material as claimed in Claim 1, wherein R 1 is a hydrogen atom, a halogen atom, a methyl group or a methoxy group.
Claim 5
Dependent Claim
23 words
A material as claimed in Claim 1, wherein R 1 is connected at the ortho-position when R 1 is not a hydrogen atom.
Claim 6
Dependent Claim
20 words
A material as claimed in any of Claims 1 to 4, wherein R 2 contains 8 to 20 carbon atoms.
Claim 7
Dependent Claim
24 words
A material as claimed in any of Claims 1 to 5,wherein R 3 is a hydrogen atom, a halogen atom or a methyl group.
Claim 8
Dependent Claim
21 words
A material as claimed in any of Claims 1 to 6, wherein X is a hydrogen atom or a chlorine atom.
Claim 9
Dependent Claim
36 words
A material as claimed in Claims 5, 6 and 7, mherein R 2 contains 8 to 20 carbon atoms, R 3 is hydrogen, X is a hydrogen atom or a chlorine atom and n is 1.
Claim 10
Dependent Claim
40 words
A material as claimed in any preceding claim, therein the coupler of general formula (I) is present in an amount in the range of 2x10 -3 to 5X10 -1 mole per mole of silver in the silver halide emulsion layer.
Claim 11
Dependent Claim
37 words
10 . A material as claimed in Claim 9, wherein the coupler is present in an amount in the range of 1x10 -2 to 5X10 -1 mole per mole of silver in the silver halide emulsion layer.
References Cited (Backward Citations)
No citation records indexed.
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