US4138258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layered color photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1977-06-09
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Granted: 1979-02-06
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Expires: 1997-06-09
Abstract
Abstract A multilayer color photographic material comprising a support having thereon at least a blue-sensitive silver halide emulsion containing a yellow coupler, a green-sensitive silver halide emulsion layer containing a magenta coupler, and a red-sensitive silver halide emulsion layer containing a cyan coupler, with the red-sensitive silver halide emulsion layer or a gelatin interlayer adjacent the red-sensitive silver halide emulsion layer containing a non-diffusible colored compound which, on coupling reaction with the oxidation product of a primary aromatic amino developing agent at development, can release a diffusible dye capable of being removed from the photographic layer.
Inventors
- 👤 Takeshi Hirose
- 👤 Keisuke Shiba
- 👤 Yukio Yokota
- 👤 Kozo Inouye
- 👤 Akio Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A multi-layer color photographic material comprising a support having thereon at least a blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, said red-sensitive layer or a gelatin interlayer adjacent said red-sensitive layer containing a non-diffusible colored cyan coupler of the formula ##STR31## wherein Coup represents a 1-naphtholic cyan coupler residue substituted at the coupling position or a phenolic cyan coupler residue substituted at the coupling position, M represents a hydrogen atom or a monovalent cation, R represents an alkyl group, a phenol group or a naphthol group; n 1 is an integer of from 1 to 4; m is 0 or 1; and said cyan coupler releases on coupling reaction with the oxidation product of a primary aromatic amino developing agent, a diffusible dye capable of being leached from the photographic layer during the development process.
Claim 2
Dependent Claim
161 words
A multi-layer color photographic material comprising a support having thereon at least a blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, said red-sensitive layer or a gelatin interlayer adjacent said red-sensitive layer containing a non-diffusible colored cyan coupler of the formula ##STR31## wherein Coup represents a 1-naphtholic cyan coupler residue substituted at the coupling position or a phenolic cyan coupler residue substituted at the coupling position, M represents a hydrogen atom or a monovalent cation, R represents an alkyl group, a phenol group or a naphthol group; n 1 is an integer of from 1 to 4; m is 0 or 1; and said cyan coupler releases on coupling reaction with the oxidation product of a primary aromatic amino developing agent, a diffusible dye capable of being leached from the photographic layer during the development process.
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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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |