US4451559A
Expired / Lapsed
US
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Silver halide photosensitive materials for color photography
Assignee: Konica Minolta Inc
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Filing: 1983-08-12
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Granted: 1984-05-29
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Expires: 2003-08-12
Abstract
Abstract There is disclosed a silver halide photosensitive material for color photography which comprises a phenol type cyan coupler having the formula: ##STR1## wherein the substituents X 1 , X 2 , Y, Z and n are as defined in the specification and claim of this application. The cyan coupler mentioned above is a novel cyan dye image-forming coupler and the photosensitive material containing the same according to the present invention has removed the various drawbacks in the prior art.
Inventors
- 👤 Ryosuke Sato
- 👤 Katsunori Kato
- 👤 Takashi Sasaki
- 👤 Hiroshi Sugita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:12
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/346; C; C07; C07C; C07C275/00; C07C275/28; C07C275/40; C07C275/42; C07C311/00; C07C311/01; C07C311/02; C07C311/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
98 words
A silver halide photosensitive material for color photography which comprises a phenol type cyan coupler having the formula ##STR12## wherein A has the formula ##STR13## X 2 is an alkyl group, a halogen atom, a hydroxyl group, a nitro group, an acyloxy group, an alkoxy group or an acyl group; Y is a non-metallic group forming a 5- or 6-membered condensed ring; Z is a hydrogen atom or a removable group upon coupling reaction with an oxidized product of a color developing agent; Ball is a ballast group; and n is an integer of 1 to 4 inclusive.
Claim 2
Dependent Claim
98 words
A silver halide photosensitive material for color photography which comprises a phenol type cyan coupler having the formula ##STR12## wherein A has the formula ##STR13## X 2 is an alkyl group, a halogen atom, a hydroxyl group, a nitro group, an acyloxy group, an alkoxy group or an acyl group; Y is a non-metallic group forming a 5- or 6-membered condensed ring; Z is a hydrogen atom or a removable group upon coupling reaction with an oxidized product of a color developing agent; Ball is a ballast group; and n is an integer of 1 to 4 inclusive.
Claim 3
Dependent Claim
12 words
The photosensitive material of claim 1, wherein A has the formula ##STR14##
Claim 4
Dependent Claim
12 words
The photosensitive material of claim 1, wherein A has the formula ##STR15##
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) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |