Patent US4913612A successfully refreshed from Google Patents.
Patent US4599302A successfully refreshed from Google Patents.
US4599302A
Expired / Lapsed
US
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Color photographic recording material
Assignee: Agfa Gevaert AG
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Filing: 1985-05-20
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Granted: 1986-07-08
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Expires: 2005-05-20
Abstract
Abstract In most highly sensitive recording materials containing silver halide, the graininess may be improved by the addition of a virtually insensitive silver halide-emulsion to a most highly sensitive light-sensitive silver halide emulsion layer.
Inventors
- 👤 Rainer Scheerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:32
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C2007/3034
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
Photographic recording material having at least one green-, and one red-sensitive layer, and at least one blue-sensitive layer S which is split up into at least three partial layers having differing sensitivities arranged so that the higher the sensitivity of a partial layer, the closer is this partial layer arranged to the object when a photograph is being taken, wherein the light-sensitive silver halide emulsion layer which is situated closest to the object when a photograph is being taken, is a partial layer S 1 of layer S and a silver halide emulsion U which is virtually insensitive to light the grains of which mainly have a diameter less than 0.05 μm is contained in the partial layer S 1.
Claim 2
Dependent Claim
120 words
Photographic recording material having at least one green-, and one red-sensitive layer, and at least one blue-sensitive layer S which is split up into at least three partial layers having differing sensitivities arranged so that the higher the sensitivity of a partial layer, the closer is this partial layer arranged to the object when a photograph is being taken, wherein the light-sensitive silver halide emulsion layer which is situated closest to the object when a photograph is being taken, is a partial layer S 1 of layer S and a silver halide emulsion U which is virtually insensitive to light the grains of which mainly have a diameter less than 0.05 μm is contained in the partial layer S 1.
Claim 3
Dependent Claim
17 words
Photographic recording material according to claim 1, wherein the layer S is composed of three partial layers.
Claim 4
Dependent Claim
56 words
Photographic recording material according to claim 1, wherein the following are applied to a layer support at least two red-sensitive and two green-sensitive partial layers having differing sensitivities; a blue-sensitive layer S composed of at least three partial layers; and a yellow filter layer situated between the blue-sensitive partial layer S 1 and the layer support.
Claim 5
Dependent Claim
17 words
Photographic recording material according to claim 1, wherein the partial layer S 1 contains a DIR compound.
Claim 6
Dependent Claim
41 words
Photographic recording material according to claim 1, wherein the two most highly sensitive partial layers of layer S contain a silver iodobromide emulsion having a grain size of greater than 0.5 μm and an iodide content of greater than 8 mol-%.
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) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |