Patent US4438194A successfully refreshed from Google Patents.
US4438194A
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Silver halide color photographic photosensitive material
Assignee: Konica Minolta Inc
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Filing: 1982-03-19
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Granted: 1984-03-20
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Expires: 2002-03-19
Abstract
Abstract A silver halide color photographic photosensitive material comprising a base having thereon a non-photosensitive intermediate layer sandwiched between a high-sensitive silver halide emulsion layer and a low-sensitive silver halide emulsion layer both having a nondiffusion coupler that forms substantially the same color and having photosensitivity in substantially the same spectral region is disclosed. Said non-photosensitive intermediate layer has incorporated therein with a nondiffusion coupler that forms substantially the same color as that formed by the nondiffusion coupler contained in said high-sensitive emulsion layer and whose coupling speed is not greater than that of the nondiffusion coupler contained in said high-sensitive silver halide emulsion layer.
Inventors
- 👤 Fumio Hamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:12
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30576; G03C7/32; G03C7/3029; G03C2007/3034; G03C2200/00; G03C2200/35; G03C7/30541
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A silver halide color photographic photosensitive material comprising a base having thereon a non-photosensitive intermediate layer sandwiched between a high-sensitive silver halide emulsion layer and a low-sensitive silver halide emulsion layer both having a nondiffusion coupler that forms substantially the same color and having photosensitivity in substantially the same spectral region, said non-photosensitive intermediate layer having been incorporated therein with a nondiffusion coupler that forms substantially the same color as that formed by the nondiffusion coupler contained in said high-sensitive emulsion layer and whose coupling speed is not greater than that of the nondiffusion coupler contained in said high-sensitive silver halide emulsion layer.
Claim 2
Dependent Claim
103 words
A silver halide color photographic photosensitive material comprising a base having thereon a non-photosensitive intermediate layer sandwiched between a high-sensitive silver halide emulsion layer and a low-sensitive silver halide emulsion layer both having a nondiffusion coupler that forms substantially the same color and having photosensitivity in substantially the same spectral region, said non-photosensitive intermediate layer having been incorporated therein with a nondiffusion coupler that forms substantially the same color as that formed by the nondiffusion coupler contained in said high-sensitive emulsion layer and whose coupling speed is not greater than that of the nondiffusion coupler contained in said high-sensitive silver halide emulsion layer.
Claim 3
Dependent Claim
45 words
A silver halide color photographic photosensitive material according to claim 1, wherein said high and low-sensitive silver halide emulsion layers being red-sensitive or green-sensitive and said nondiffusion coupler being incorporated in the non-photosensitive intermediate layer and being a cyan coupler or a magenta coupler respectively.
Claim 4
Dependent Claim
56 words
A silver halide color photographic photosensitive material according to claim 1 or 2, wherein the amount of nondiffusion coupler having been incorporated in the high-sensitive emulsion layer and the non-photosensitive intermediate layer being such that the maximum color density thereof becomes 2% to 60% with respect to the maximum density of the low sensitive emulsion layer.
Claim 5
Dependent Claim
42 words
A silver halide color photographic photosensitive material according to claim 1, wherein the nonphotosensitive intermediate layer contains silver halide grains having a lower sensitivity in the same spectral region than the silver halide grains in the low sensitive silver halide emulsion layer.
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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |