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US4764455A
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Color image-forming process
Assignee: Fujifilm Holdings Corp
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Filing: 1986-08-06
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Granted: 1988-08-16
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Expires: 2006-08-06
Abstract
Abstract A color image-forming process is described, for a silver halide color photographic material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, which process comprises incorporating in the photographic material a yellow dye represented by formula (I) and processing the photographic material using a bleach-fixing solution containing a ferric complex of aminopolycarboxylic acid and a thiosulfate ##STR1## wherein R 1 and R 2 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a carboxy group, a substituted amino group, a carbamoyl group, a sulfamoyl group, a nitro group or an alkoxycarbonyl group; R 3 and R 4 each represents a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted alkenyl group, an unsubstituted or substituted aryl group, an acyl group or a sulfonyl group, or R 3 and R 4 may be taken together to form a 5- or 6-membered ring; X represents a cyano group; and Y represents an acyl group or a sulfonyl group.
Inventors
- 👤 Jun Arakawa
- 👤 Masahiro Okada
- 👤 Takatoshi Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:45
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832; G03C1/005; G03C1/0051; G03C2007/3039
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
225 words
A color image-forming process for a silver halide color photographic material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, which process comprises dispersing in a light-insensitive hydrophilic colloid layer provided at a position nearer to the support than a blue-sensitive layer and more distant from the support than a green-sensitive layer and a red-sensitive layer in the photographic material a yellow dye represented by formula (I) and processing the photographic material using a bleach-fixing solution containing a ferric complex of aminopolycarboxylic acid and a thiosulfate, said formula (I) being represented by ##STR8## wherein R 1 and R 2 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a carboxy group, a substituted amino group, a carbamoyl group, a sulfamoyl group, a nitro group, or an alkoxycarbonyl group, R 3 and R 4 each represents a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted alkenyl group, an unsubstituted or substituted aryl group, an acyl group or a sulfonyl group, or R 3 and R 4 may be taken together to form a 5- or 6-membered ring, X represents a cyano group, and Y represents an acyl group or a sulfonyl group.
Claim 2
Dependent Claim
225 words
A color image-forming process for a silver halide color photographic material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, which process comprises dispersing in a light-insensitive hydrophilic colloid layer provided at a position nearer to the support than a blue-sensitive layer and more distant from the support than a green-sensitive layer and a red-sensitive layer in the photographic material a yellow dye represented by formula (I) and processing the photographic material using a bleach-fixing solution containing a ferric complex of aminopolycarboxylic acid and a thiosulfate, said formula (I) being represented by ##STR8## wherein R 1 and R 2 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a carboxy group, a substituted amino group, a carbamoyl group, a sulfamoyl group, a nitro group, or an alkoxycarbonyl group, R 3 and R 4 each represents a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted alkenyl group, an unsubstituted or substituted aryl group, an acyl group or a sulfonyl group, or R 3 and R 4 may be taken together to form a 5- or 6-membered ring, X represents a cyano group, and Y represents an acyl group or a sulfonyl group.
Claim 3
Dependent Claim
36 words
A color image-forming process for a color photographic material as in claim 1, wherein said dye represented by formula (I) is present in an amount of from 1 to 2,000 mg/m 2 of the light-sensitive material.
Claim 4
Dependent Claim
36 words
A color image-forming process for a color photographic material as in claim 1, wherein said dye represented by formula (I) is present in an amount of from 50 to 800 mg/m 2 of the light-sensitive material.
Claim 5
Dependent Claim
31 words
A color image-forming process for a color photographic material as in claim 1, wherein said ferric complex of aminopolycarboxylic acid is used in an amount of from 50 to 300 g/liter.
Claim 6
Dependent Claim
28 words
A color image-forming process for a silver halide color photographic material as in claim 1, wherein said silver halide emulsion layers primarily contain silver iodobromide or silver iodochlorobromide.
Claim 7
Dependent Claim
28 words
A color image-forming process for a color photographic material as in claim 1, wherein an optical density of said color photographic material ranges of from 0.05 to 3.0.
Claim 8
Dependent Claim
27 words
A color image-forming process for a color photographic material as in claim 1, wherein said yellow dye represented by formula (I) is incorporated in yellow filter layer.
Claim 9
Dependent Claim
34 words
A color image-forming process for a color photographic material as in claim 7, wherein an emulsion layer adjacent to said yellow filter layer contains tabular grains having a diameter-to-thickness ratio of 5 or more.
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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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |