Patent US4851327A successfully refreshed from Google Patents.
US4851327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic color photosensitive material with two layer reflective support
Assignee: Fujifilm Holdings Corp
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Filing: 1987-07-15
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Granted: 1989-07-25
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Expires: 2007-07-15
Abstract
Abstract The present invention relates to a photographic support having a secondary diffuse-reflective surface, and a color photosensitive material comprising at least one silver halide emulsion layer formed on the secondary diffuse-reflective surface of a photographic support. A photographic support of the present invention provides an image having remarkably improved brightness, saturation, tone reproducibility in shadow areas and sharpness. A color photosensitive material of the present invention provides an image having remakably improved brightness, saturation, tone reproducibility in shades and sharpness and also capable of rapid development.
Inventors
- 👤 Tetsuro Fuchizawa
- 👤 Masaru Sano
- 👤 Seiichi Taguchi
- 👤 Keisuke Shiba
- 👤 Tadashi Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:34
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A color photosensitive element comprising two or more silver halide emulsion layers having different spectral sensitivities, a thin solid metal film layer having a secondary diffuse-reflective surface, and a support, wherein said thin solid film layer is located between the emulsion layers and the support, and wherein said thin solid metal film layer has a reflectance of at least 0.5 and an average unevenness of about 0.1 to 2000 unevenness/mm.
Claim 2
Dependent Claim
70 words
A color photosensitive element comprising two or more silver halide emulsion layers having different spectral sensitivities, a thin solid metal film layer having a secondary diffuse-reflective surface, and a support, wherein said thin solid film layer is located between the emulsion layers and the support, and wherein said thin solid metal film layer has a reflectance of at least 0.5 and an average unevenness of about 0.1 to 2000 unevenness/mm.
Claim 3
Dependent Claim
21 words
The color photosensitive material of claim 1 wherein the metal is aluminum, silver, gold, nickel, magnesium or an alloy of them.
Claim 4
Dependent Claim
27 words
The color photosensitive material of claim 1 wherein a thermoplastic resin layer or an adhesive layer is provided between the thin solid film layer and the support.
Claim 5
Dependent Claim
39 words
The color photosensitive material of claim 1 wherein the secondary diffuse-reflective surface of the thin solid film layer is obtained by making a mirror surface of the thin solid film layer uneven to form about 0.1 to 2000 unevennesses/mm.
Claim 6
Dependent Claim
13 words
The color photosensitive material of claim 1 wherein the support is a paper.
Claim 7
Dependent Claim
34 words
The color photosensitive material of claim 5 wherein a thermoplastic resin layer or a water-resistant resin layer is provided on the surface of the support opposite to that having the thin solid film layer.
Claim 8
Dependent Claim
101 words
The color photosensitive material of claim 1 which comprises an emulsion layer (BL) containing silver halide grains having a spectral sensitivity in a wave length region of 400 to 500 mμ and finely dispersed yellow color coupler grains, an emulsion layer (GL) containing silver halide grains having a spectral sensitivity in a wave length region of 500 to 580 mμ and finely dispersed magenta color coupler grains and an emulsion layer (RL) containing silver halide grains having a spectral sensitivity in a wave length region of 580 to 740 mμ and finely dispersed cyan color coupler grains in an any order.
Claim 9
Dependent Claim
24 words
The color photographic sensitive material of claim 1 wherein a resin layer is provided between the film layer and the silver halide emulsion layer.
Claim 10
Dependent Claim
24 words
The color photosensitive material of claim 1 wherein a fluorescent brightener is contained in at least one of the layers on the film layer.
Claim 11
Dependent Claim
25 words
The color photosensitive material of claim 9 wherein the layers on the film layer are a prime layer, photosensitive layer, intermediate layer and protective layer.
Claim 12
Dependent Claim
26 words
The color photosensitive material of claim 10 wherein the fluorescent brightener is contained in at least one of the prime layer, intermediate layer and protective layer.
Claim 13
Dependent Claim
49 words
The color photosensitive material of claim 1 wherein a fluorescent brightener which liberates a fluorescent brightening residue upon the reaction with an oxidation product of a developing agent is contained in a photosensitive layer, or intermediate layer or protective layer adjacent to the photosensitive layer on the film layer.
Claim 14
Dependent Claim
80 words
The color photosensitive material of claim 12 wherein the fluorescent brightener is a compound of the general formula (I): A--(L).sub.a --Fl (I) wherein Fl represents a fluorescent brightening compound residue, L represents a connecting group, a represents a number of 1 or 2 and A represents a color compound-forming coupler residue, colorless compound-forming coupler residue or hydroquinone residue, the residue being that of a compound capable of participating in an exchange reaction with an oxidation product of a developing agent.
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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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |