Patent US4542091A successfully refreshed from Google Patents.
US4542091A
Expired / Lapsed
US
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Color image forming process
Assignee: Fujifilm Holdings Corp
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Filing: 1984-12-14
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Granted: 1985-09-17
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Expires: 2004-12-14
Abstract
Abstract A process for forming color images, and a silver halide color photographic material for use in the process, are described, said process comprising processing with a developer containing hydroxylamine a silver halide color photographic material comprising a support having 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, said blue-sensitive silver halide emulsion layer being disposed at a more upper portion than other color-sensitive silver halide emulsion layers, and said color photographic material further comprising (1) a light-insensitive layer containing at least one of a yellow colored magenta-dye-forming coupler and a yellow non-diffusible organic dye between the lowermost blue-sensitive silver halide emulsion layer and the uppermost layer of the other color-sensitive silver halide emulsion layers, and (2) a light-insensitive silver halide emulsion in any layer above said light-insensitive layer.
Inventors
- 👤 Noboru Sasaki
- 👤 Takatoshi Ishikawa
- 👤 Keiichi Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:39
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
A process for forming color images which comprises processing with a developer containing hydroxylamine a silver halide color photographic material comprising a support having 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, said blue-sensitive silver halide emulsion layer being disposed at a more upper portion than other color-sensitive silver halide emulsion layers, and said color photographic material further comprising (1) a light-insensitive layer containing at least one of a yellow colored magenta-dye-forming coupler and a yellow non-diffusible organic dye between the lowermost blue-sensitive silver halide emulsion layer and the uppermost layer of the other color-sensitive silver halide emulsion layers, and (2) a light-insensitive silver halide emulsion in any layer above said light-insensitive layer.
Claim 2
Dependent Claim
131 words
A process for forming color images which comprises processing with a developer containing hydroxylamine a silver halide color photographic material comprising a support having 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, said blue-sensitive silver halide emulsion layer being disposed at a more upper portion than other color-sensitive silver halide emulsion layers, and said color photographic material further comprising (1) a light-insensitive layer containing at least one of a yellow colored magenta-dye-forming coupler and a yellow non-diffusible organic dye between the lowermost blue-sensitive silver halide emulsion layer and the uppermost layer of the other color-sensitive silver halide emulsion layers, and (2) a light-insensitive silver halide emulsion in any layer above said light-insensitive layer.
Claim 3
Dependent Claim
57 words
A process for forming color images as in claim 1, wherein said light-insensitive layer has an absorption maximum at a wavelength of from 420 to 480 nm and an optical density at 530 nm of not more than 0.3 times the optical density thereof at the absorption maximum wavelength in the coated state of the light-insensitive layer.
Claim 4
Dependent Claim
28 words
A process for forming color images as in claim 2, wherein said light-insensitive layer has the optical density of from 0.2 to 1.5 at the absorption maximum wavelength.
Claim 5
Dependent Claim
28 words
A process for forming color images as in claim 2, wherein said light-insensitive layer has the optical density of from 0.3 to 1.0 at the absorption maximum wavelength.
Claim 6
Dependent Claim
35 words
A process for forming color images as in claim 1, wherein said hydroxylamine is represented by the ##STR7## wherein R represents a hydrogen atom or an alkyl group having from 1 to 3 carbon atoms.
Claim 7
Dependent Claim
18 words
A process for forming color images as in claim 5, wherein said substituted R represents a hydrogen atom.
Claim 8
Dependent Claim
33 words
A process for forming color images as in claim 1, wherein the hydroxylamine is contained in the developer in an amount of from 0.1 to 20 g per liter of the color developer.
Claim 9
Dependent Claim
33 words
A process for forming color images as in claim 7, wherein the hydroxylamine is contained in the developer in an amount of from 1 to 10 g per liter of the color developer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-16 | 1989-03-18 | 1989-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-16 | 1993-03-18 | 1993-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-16 | 1997-03-18 | 1997-09-17 | $7700.00 | Window Closed / Lapsed |