Patent US4906558A successfully refreshed from Google Patents.
US4906558A
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Color photographic silver halide material
Assignee: Agfa Gevaert AG
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Filing: 1988-10-14
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Granted: 1990-03-06
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Expires: 2008-10-14
Abstract
Abstract Color photographic silver halide material in which at least one layer contains a silver halide emulsion with 95 to 100 mol % of chloride which has been optimally ripened with a combination of at least one sulphur ripening body and at least one compound of the formula ##STR1## in which R 1 , R 2 and R 3 denote, independently of one another, hydrogen or alkyl, and X.sup.⊖ denotes an anion, combines excellent sensitivity with low fog and steep gradation, particularly in the threshold and shoulder region.
Inventors
- 👤 Bruno Mucke
- 👤 Franz Moll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
Photographic silver halide material containing at least one blue sensitive layer with which a yellow coupler is associated, at least one green sensitive layer with which a magenta coupler is associated and at least one red sensitive layer with which a cyan coupler is associated, at least one layer containing a silver halide emulsion in which from 95 to 100 mol% of the halide is chloride, which emulsion is ripened to optimum sensitivity with a combination of at least one sulphur ripening compound and at least one compound corresponding to the following formula ##STR15## wherein R 1 , R 2 and R 3 denote, independently of one another, hydrogen or alkyl and X⊖ denotes an anion.
Claim 2
Dependent Claim
116 words
Photographic silver halide material containing at least one blue sensitive layer with which a yellow coupler is associated, at least one green sensitive layer with which a magenta coupler is associated and at least one red sensitive layer with which a cyan coupler is associated, at least one layer containing a silver halide emulsion in which from 95 to 100 mol% of the halide is chloride, which emulsion is ripened to optimum sensitivity with a combination of at least one sulphur ripening compound and at least one compound corresponding to the following formula ##STR15## wherein R 1 , R 2 and R 3 denote, independently of one another, hydrogen or alkyl and X⊖ denotes an anion.
Claim 3
Dependent Claim
35 words
Colour photographic material according to claim 1, in which the blue sensitive layer or blue sensitive layers is or are optimally ripened with a sulphur ripening compound and a gold command according to claim 1.
Claim 4
Dependent Claim
25 words
Colour photographic material according to claim 1, in which the silver halide emulsion containing from 95 to 100 mol% of chloride is doped with iridium.
Claim 5
Dependent Claim
23 words
Colour photographic material according to claim 1, in which all the emulsions consists to an extent of 95 to 100 mol% of chloride.
Claim 6
Dependent Claim
42 words
Colour photographic material according to claim 1, in which the silver halide emulsion which consists substantially of chloride contains from 0.01 to 0.5 mol% of iodide or from 0.02 to 5 mol% of bromide or from 0.02 to 5 mol% of thiocyanate.
Claim 7
Dependent Claim
43 words
Colour photographic material according to claim 1, in which the sulphur ripening compound is used in a quantity of from 0.5 to 20 μg/g of Ag and the gold compound is used in a quantity of from 0.5 to 20 μg/g of Ag.
Claim 8
Dependent Claim
37 words
Colour photographic material according to claim 1, in which the sulphur ripening compound used is thiosulphate and the gold compound used is a compound in which R 1 , R 2 =methyl, R 3 =hydrogen and X⊖=chloride.
References Cited (Backward Citations)
US2642361A
Cited
US3442653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |