Patent US4446226A successfully refreshed from Google Patents.
US4446226A
Expired / Lapsed
US
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Light-sensitive color photographic material
Assignee: Konica Minolta Inc
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Filing: 1982-07-12
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Granted: 1984-05-01
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Expires: 2002-07-12
Abstract
Abstract A light-sensitive color photographic material having a support and, coated thereon, at least two light-sensitive silver halide emulsion layers respectively sensitive to lights of different spectral regions, characterized in that each of the light-sensitive emulsion layers comprises at least two emulsion layers having different light-sensitivities and containing negative type light-sensitive silver halide crystals essentially consisting of silver iodobromide containing silver iodide at a proportion not higher than 4 mole %. This invention provides a silver halide color photographic material, in which the proportion of the silver halide utilized for the information of a color image to the total silver halide used is enhanced remarkably.
Inventors
- 👤 Kiyoshi Yamashita
- 👤 Toshifumi Iijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:58
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
A light-sensitive color photographic material having a support and, coated thereon, at least two light-sensitive silver halide emulsion layers respectively sensitive to light of a different spectral region, each of said emulsion layers comprising at least two light-sensitive emulsion sublayers having different sensitivity to light and containing negative type light-sensitive silver halide crystals consisting essentially of silver iodobromide containing silver iodide in an amount of from 1 to 3 mole %.
Claim 2
Dependent Claim
71 words
A light-sensitive color photographic material having a support and, coated thereon, at least two light-sensitive silver halide emulsion layers respectively sensitive to light of a different spectral region, each of said emulsion layers comprising at least two light-sensitive emulsion sublayers having different sensitivity to light and containing negative type light-sensitive silver halide crystals consisting essentially of silver iodobromide containing silver iodide in an amount of from 1 to 3 mole %.
Claim 3
Dependent Claim
70 words
The light-sensitive color photographic material according to claim 1 wherein the negative type silver halide crystals contained in at least one of said at least two light-sensitive emulsion sublayers have a monodispersed size distribution satisfying the following relationship: ##EQU3## in which S designates the standard deviation, r designates the average crystal size, r i designates the crystal sizes of the individual crystals, and n i designates the number of crystals.
Claim 4
Dependent Claim
65 words
The light-sensitive color photographic material according to claim 2 wherein the negative type silver halide crystals contained in all of said light-sensitive emulsion sublayers have a monodispersed size distribution satisfying the following relationship: ##EQU4## in which S designates the standard deviation, r designates the average crystal size, r i designates the crystal sizes of the individual crystals, and n i designates the number of crystals.
Claim 5
Dependent Claim
41 words
The light-sensitive color photographic material according to claim 2 wherein the negative type silver halide crystals contained in at least one of said at least two light-sensitive emulsion sublayers consists essentially of octahedrons, tetradecahedrons, or a combination of octahedrons and tetradecahedrons.
Claim 6
Dependent Claim
36 words
The light-sensitive color photographic material according to claim 4 wherein the negative type silver halide crystals contained in all of said light-sensitive emulsion sublayers consist essentially of octahedrons, tetradecahedrons or a combination of octahedrons and tetradecahedrons.
Claim 7
Dependent Claim
33 words
The light-sensitive color photographic material according to claim 1 wherein at least one of said emulsion layers comprises at least two light-sensitive emulsion sublayers containing silver halide crystals having different average crystal sizes.
Claim 8
Dependent Claim
33 words
The light-sensitive color photographic material according to claim 2 wherein at least one of said emulsion layers comprises at least two light-sensitive emulsion sublayers containing silver halide crystals having different average crystal sizes.
Claim 9
Dependent Claim
33 words
The light-sensitive color photographic material according to claim 3 wherein at least one of said emulsion layers comprises at least two light-sensitive emulsion sublayers containing silver halide crystals having different average crystal sizes.
Claim 10
Dependent Claim
33 words
The light-sensitive color photographic material according to claim 5 wherein at least one of said emulsion layers comprises at least two light-sensitive emulsion sublayers containing silver halide crystals having different average crystal sizes.
References Cited (Backward Citations)
US4187110A
Cited
US4153460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |