US4960685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic element and process
Assignee: Eastman Kodak Co
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Filing: 1989-12-20
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Granted: 1990-10-02
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Expires: 2009-12-20
Abstract
Abstract A combination in a color photographic silver halide element and process of at least one red-sensitive silver halide emulsion layer comprising a particular naphtholic cyan dye-forming coupler with at least one green-sensitive silver halide emulsion layer comprising a particular pyrazolo[3,2-c]-s-triazole coupler and at least one blue-sensitive silver halide emulsion layer comprising a particular pivaloylacetanilide yellow dye-forming coupler enables improved color saturation of dye images, better relation of speed to grain characteristics and reduced unwanted spectral absorption of dye images formed. This combination is particularly useful in color photographic silver halide materials and processes for forming improved reversal dye images.
Inventors
- 👤 Arlyce T. Bowne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:39
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3225
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A color photographic silver halide element comprising a support bearing at least one red-sensitive silver halide emulsion layer comprising at least one cyan dye-forming coupler, at least one green-sensitive silver halide emulsion layer comprising at least one magenta dye-forming coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow dye-forming coupler wherein (A) the cyan dye-forming coupler is a naphtholic coupler comprising in the 2- position an amide group represented by the formula: ##STR18## wherein n is 1 to 4 and R 2 is alkyl or aryl; and comprising in the 4- position a substituted phenoxy ballast group; (B) the magenta dye-forming coupler is a pyrazolo[3,2-c]-s-triazole comprising a substituted or unsubstituted phenyl group in the 3-position or 6-position; and, (C) the yellow dye-forming coupler is a 2-equivalent pivaloylacetanilide coupler comprising a substituted hydantoin or phenoxy coupling-off group; when the coupling-off group is phenoxy, the anilide moiety contains ortho-alkoxy or ortho-aryloxy.
Claim 2
Dependent Claim
155 words
A color photographic silver halide element comprising a support bearing at least one red-sensitive silver halide emulsion layer comprising at least one cyan dye-forming coupler, at least one green-sensitive silver halide emulsion layer comprising at least one magenta dye-forming coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow dye-forming coupler wherein (A) the cyan dye-forming coupler is a naphtholic coupler comprising in the 2- position an amide group represented by the formula: ##STR18## wherein n is 1 to 4 and R 2 is alkyl or aryl; and comprising in the 4- position a substituted phenoxy ballast group; (B) the magenta dye-forming coupler is a pyrazolo[3,2-c]-s-triazole comprising a substituted or unsubstituted phenyl group in the 3-position or 6-position; and, (C) the yellow dye-forming coupler is a 2-equivalent pivaloylacetanilide coupler comprising a substituted hydantoin or phenoxy coupling-off group; when the coupling-off group is phenoxy, the anilide moiety contains ortho-alkoxy or ortho-aryloxy.
Claim 3
Dependent Claim
156 words
A color photographic element as in claim 1 wherein the cyan dye-forming coupler is represented by the formula: ##STR19## wherein Q is a substituted phenoxy coupling-off group; n is 1 to 4; and R 2 is unsubstituted or substituted alkyl or aryl; the magenta dye-forming coupler is represented by the formula: ##STR20## wherein Z 1 is hydrogen or a coupling-off group; R 37 and R 40 individually are unsubstituted or substituted alkyl groups containing 1 to 4 carbon atoms or alkoxy; x and y individually are 1 to 5; and, R 38 and R 39 individually are alkyl; and, the yellow dye-forming coupler is represented by the formula: ##STR21## wherein R 45 is chlorine, alkyl containing 1 to 4 carbon atoms or alkoxy containing 1 to 4 carbon atoms; R 46 is --COOR 50 wherein R 50 is a ballast group; R 47 is benzyl; R 48 is hydrogen or alkyl; and, R 49 is alkoxy.
Claim 4
Dependent Claim
67 words
A color photographic silver halide element comprising a support bearing at least one red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler represented by the formula: ##STR22## at least one green-sensitive silver halide emulsion layer containing at least one magenta dye-forming coupler represented by the formula: ##STR23## and at least one blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler represented by the formula: ##STR24##
Claim 5
Dependent Claim
67 words
A color photographic silver halide element comprising a support bearing at least one red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler represented by the formula: ##STR22## at least one green-sensitive silver halide emulsion layer containing at least one magenta dye-forming coupler represented by the formula: ##STR23## and at least one blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler represented by the formula: ##STR24##
Claim 6
Dependent Claim
40 words
A process of forming a dye image in an exposed photographic element as defined in claim 1, said process comprising the step of reacting at least one of the couplers with an oxidized color developing agent to form a dye.
Claim 7
Dependent Claim
59 words
A process of forming a reversal dye image in an exposed photographic silver halide element as defined in claim 1, said process comprising the steps of black-and-white development with at least one black-and-white silver halide developing agent followed by a single color development of the element with at least one color developing agent to form a reversal dye image.
Claim 8
Dependent Claim
59 words
A process of forming a reversal dye image in an exposed photographic silver halide element as defined in claim 3, said process comprising the steps of black-and-white development with at least one black-and-white silver halide developing agent followed by a single color development of the element with at least one color developing agent to form a reversal dye image.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |