US4427763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic recording material with a precursor compound for a yellow mask
Assignee: Agfa Gevaert AG
•
Filing: 1982-08-30
•
Granted: 1984-01-24
•
Expires: 2002-08-30
Abstract
Abstract A color photographic recording material, in which a precursor compound for a yellow mask coupler is contained in a green-sensitive layer or in a layer adjacent thereto and in which a blue-sensitive layer is arranged between this layer and the layer support, permits very good sharpness with satisfactory speed.
Inventors
- 👤 Joachim W. Lohmann
- 👤 Gunter Renner
- 👤 Wolfgang Sauerteig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C7/32; G03C7/333; G03C7/3335; G03C2007/3034; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A color photographic recording material, having a layer support, at least one blue-sensitive, at least one red-sensitive and at least one green-sensitive silver halide emulsion layer, at least one blue-sensitive silver halide emulsion layer being located between the layer support and at least one green-sensitive silver halide emulsion layer (G) wherein at least one compound corresponding to at least one of the following formulae is contained in the layer (G) or in a layer adjacent thereto: ##STR8## wherein R 1 to R 3 represent substituents usual for yellow mask couplers in photographic materials, X represents --O--, --NR 4 -- or --S-- in the ortho or para position. R 4 represents alkyl or hydrogen, n represents 1 or 2, and R represents a monovalent or divalent acyl radical.
Claim 2
Dependent Claim
127 words
A color photographic recording material, having a layer support, at least one blue-sensitive, at least one red-sensitive and at least one green-sensitive silver halide emulsion layer, at least one blue-sensitive silver halide emulsion layer being located between the layer support and at least one green-sensitive silver halide emulsion layer (G) wherein at least one compound corresponding to at least one of the following formulae is contained in the layer (G) or in a layer adjacent thereto: ##STR8## wherein R 1 to R 3 represent substituents usual for yellow mask couplers in photographic materials, X represents --O--, --NR 4 -- or --S-- in the ortho or para position. R 4 represents alkyl or hydrogen, n represents 1 or 2, and R represents a monovalent or divalent acyl radical.
Claim 3
Dependent Claim
34 words
A material according to claim 1, wherein the improvement comprises R is a monovalent or divalent acyl radical of a carboxylic or sulphonic acid, of a carbonic acid or of a carbonic acid derivative.
Claim 4
Dependent Claim
51 words
A material according to claim 2, wherein the improvement comprises R is an acyl radical of an aliphatic carboxylic acid containing from 2 to 5 carbon atoms or a benzoyl radical or a radical capable of being split off from the rest of the compound by an intramolecular nucleophilic displacement reaction.
Claim 5
Dependent Claim
29 words
A material according to claim 1, wherein the improvement comprises the compound is contained in a quantity of from 50 mg to 250 mg per mol of silver halide.
Claim 6
Dependent Claim
20 words
A material according to claim 1, wherein the improvement comprises at least one of the following compounds is contained: ##STR9##
Claim 7
Dependent Claim
35 words
A material according to claim 1, wherein the improvement comprises a relatively high speed blue-sensitive layer is arranged above the green-sensitive layer (G) and a comparatively low-speed blue-sensitive layer is arranged beneath the layer (G).
References Cited (Backward Citations)
US3476564A
Cited
US3684513A
Cited
US3658536A
Cited
US4163670A
Cited
US4061498A
Cited
US4062683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |