US4591548A
Expired / Lapsed
US
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Cyan dye-forming couplers and photographic elements and processes
Assignee: 3M Co
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Filing: 1985-07-15
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Granted: 1986-05-27
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Expires: 2005-07-15
Abstract
Abstract Cyan dye-forming 6-hydroxy-2H-1,4-benzoxazin-3-(4H)-one couplers, preferably cyan dye-forming couplers corresponding to the general formula: <IMAGE> wherein R represents hydrogen or R'''-X-NH, R' represents hydrogen or a substituted or unsubstituted alkyl group, R'' represents hydrogen or Riv-X-, X represents a member selected from the group consisting of -CO-, -SO2-, -OCOCO-, -NHCO-, R''' and Riv represent a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group and Y and Z, the same or different, represent hydrogen, halogen and a substituted or unsubstituted alkyl or alkoxy group, are described for use in silver halide color photographic processes and elements.
Inventors
- 👤 Ivano Delprato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:56
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; C; C07; C07C; C07C205/00; C07C205/13; C07C205/20; C07C205/21; C07C205/22; C07C205/39; C07C205/42; C07C205/43; C07D; C07D265/00; C07D265/28; C07D265/34; C07D265/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
46 words
A process for forming a cyan dye image in a photographic element comprising a support and a silver halide emulsion, characterized by the step of developing the exposed element with a silver halide color developing agent in the presence of a 2-equivalent cyan dye-forming 6-hydroxy-2H-1,4-benzoxazin-3-(4H)-one coupler.
Claim 2
Dependent Claim
46 words
A process for forming a cyan dye image in a photographic element comprising a support and a silver halide emulsion, characterized by the step of developing the exposed element with a silver halide color developing agent in the presence of a 2-equivalent cyan dye-forming 6-hydroxy-2H-1,4-benzoxazin-3-(4H)-one coupler.
Claim 3
Dependent Claim
94 words
The process of claim 1 wherein the cyan dye-forming coupler has the general formula: ##STR5## wherein R represents hydrogen or R"'--X--NH, R' represents hydrogen or a substituted or unsubstituted alkyl group, R" represents hydrogen or R iv --X--, X represents a member selected from the group consisting of --CO--, --SO 2 --, --OCOCO-- and --NH--CO--, R"' and R iv represent a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group and Y and Z, the same or different, represent hydrogen, halogen and a substituted or not substituted alkyl or alkoxy group.
Claim 4
Dependent Claim
25 words
A color photographic element comprising coated on a support at least one light-sensitive silver halide emulsion layer associated with a 2-equivalent cyan dye-forming 6-hydroxy-2H-1,4-benzoxazin-3-(4H)-one coupler.
Claim 5
Dependent Claim
25 words
A color photographic element comprising coated on a support at least one light-sensitive silver halide emulsion layer associated with a 2-equivalent cyan dye-forming 6-hydroxy-2H-1,4-benzoxazin-3-(4H)-one coupler.
Claim 6
Dependent Claim
129 words
A color photographic light-sensitive element comprising coated on a support at least one light-sensitive silver halide emulsion layer containing in the emulsion layer or in a non light-sensitive water-permeable colloidal layer in a water-permeable relationship with said light-sensitive silver halide emulsion layer a 2-equivalent cyan-dye-forming coupler having the general formula: ##STR6## wherein R represents hydrogen or R"'--X--NH, R' represents hydrogen or a substituted or unsubstituted alkyl group, R" represents hydrogen or R iv --X--, X represents a member selected from the group consisting of --CO--, --SO 2 --, --OCOCO-- and --NH--CO--, R"' and R iv represent a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group and Y and Z, the same or different, represent hydrogen, halogen and a substituted or unsubstituted alkyl or alkoxy group.
Claim 7
Dependent Claim
129 words
A color photographic light-sensitive element comprising coated on a support at least one light-sensitive silver halide emulsion layer containing in the emulsion layer or in a non light-sensitive water-permeable colloidal layer in a water-permeable relationship with said light-sensitive silver halide emulsion layer a 2-equivalent cyan-dye-forming coupler having the general formula: ##STR6## wherein R represents hydrogen or R"'--X--NH, R' represents hydrogen or a substituted or unsubstituted alkyl group, R" represents hydrogen or R iv --X--, X represents a member selected from the group consisting of --CO--, --SO 2 --, --OCOCO-- and --NH--CO--, R"' and R iv represent a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group and Y and Z, the same or different, represent hydrogen, halogen and a substituted or unsubstituted alkyl or alkoxy group.
Claim 8
Dependent Claim
19 words
The color photographic element according to claim 4, wherein the silver halide emulsion layer is a red-sensitive emulsion layer.
Claim 9
Dependent Claim
27 words
The color photographic element according to claim 5, wherein said photographic material further comprises a blue-sensitive silver halide emulsion layer and a green-sensitive silver halide emulsion layer.
Claim 10
Dependent Claim
34 words
The color photographic element according to claim 5, wherein said blue-sensitive silver halide emulsion layer comprises associated therewith a yellow-dye-forming coupler and said green-sensitive silver halide emulsion layer comprises associated therewith a magenta-dye-forming coupler.
References Cited (Backward Citations)
US4036643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |