US4724197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic recording material and a process for the production of color photographic images
Assignee: Agfa Gevaert AG
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Filing: 1986-05-30
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Granted: 1988-02-09
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Expires: 2006-05-30
Abstract
Abstract A color photographic recording material contains at least one silver halide emulsion layer which is divided into a partial layers of different sensitivity, at least one relatively high-sensitivity partial layer containing a synthetic polymer and gelatin in a ratio by weight of from 30:70 to 80:20.
Inventors
- 👤 Reinhart Matejec
- 👤 Wolfgang Himmelmann
- 👤 Gunter Helling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:33
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C7/392; G03C7/396; G03C2007/3034; G03C2200/00; G03C2200/27
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
In a color photographic recording material comprising at least one silver halide emulsion layer which is divided into a relatively low-sensitive partial layer L and at least one more sensitive partial layer H, at least one color coupler being associated with the partial layers H and L, a synthetic polymer P consisting of at least one synthetic polymer with a glass transition temperature of below 25° C. contained in said partial layer H and gelatin contained in said partial layer H, the ratio by weight of all the polymers P and gelatin in partial layer H being from 40:60 to 80:20, and the partial layer L contains a synthetic polymer P in a range by weight of from 0 to a ratio of polymer P to gelatin of lower than 25:75.
Claim 2
Dependent Claim
131 words
In a color photographic recording material comprising at least one silver halide emulsion layer which is divided into a relatively low-sensitive partial layer L and at least one more sensitive partial layer H, at least one color coupler being associated with the partial layers H and L, a synthetic polymer P consisting of at least one synthetic polymer with a glass transition temperature of below 25° C. contained in said partial layer H and gelatin contained in said partial layer H, the ratio by weight of all the polymers P and gelatin in partial layer H being from 40:60 to 80:20, and the partial layer L contains a synthetic polymer P in a range by weight of from 0 to a ratio of polymer P to gelatin of lower than 25:75.
Claim 3
Dependent Claim
25 words
A color photographic recording material as claimed in claim 1, characterized in that the layer H contains at least one low molecular weight color coupler.
Claim 4
Dependent Claim
39 words
A color photographic recording material as claimed in claim 1, characterized in that at least one emulsion layer sensitized to another spectral region is present between at least one partial layer H and at least one partial layer L.
Claim 5
Dependent Claim
25 words
A color photographic recording material as claimed in claim 1, characterized in that the polymer is a high molecular weight polymerization, polycondensation or polyaddition product.
Claim 6
Dependent Claim
24 words
A color photographic recording material as claimed in claim 1, characterized in that the polymer is completely or predominantly a nonionic or anionic polyurethane.
Claim 7
Dependent Claim
29 words
A color photographic recording material as claimed in claim 1, characterized in that the polymer is a polymer latex and is at least partly loaded with a color coupler.
Claim 8
Dependent Claim
32 words
A color photographic recording material as claimed in claim 1, characterized in that the polymer P is present in dispersion form with an average particle size of from 20 to 2000 nm.
Claim 9
Dependent Claim
29 words
A process for producing color photographic images by imagewise exposure of the material claimed in claim 1 and development in a developer bath containing at least one p-phenylene diamine.
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) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |