US4438193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photosensitive color photographic material
Assignee: Konica Minolta Inc
•
Filing: 1981-12-21
•
Granted: 1984-03-20
•
Expires: 2001-12-21
Abstract
Abstract There is disclosed a novel silver halide photosensitive color photographic material comprising a coupler which consists of a coupling component (A) which is capable of causing a coupling reaction with an oxidized color developing agent and a substituent component bonded at the coupling position of said coupling component (A), which substituent component is capable of being split off on coupling reaction, the improvement characterized in that said substituent comprises a coupling component (B) which can undergo coupling reaction with an oxidized color developing agent when released from said coupling component (A) and a photographically useful component which is capable of being released on coupling reaction of said coupling component (B). The color photographic material according to the present invention provides graininess, sharpness and color reproducibility which is sufficiently competent to the requirement of further miniturization of film size by use of a coupler having novel functions.
Inventors
- 👤 Morito Uemura
- 👤 Kenichi Kishi
- 👤 Satoshi Nakagawa
- 👤 Shuji Kida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:19
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A silver halide photosensitive color photographic material comprising a coupler of the formula ##STR9## wherein Coup (A) is a non-diffusion type coupling component (A) bonded to the oxygen atom at a position which enables Coup (A) to form a colored or colorless compound as a result of coupling with and releasing from an oxidized color developing agent, Coup (B) is a diffusion type coupling component (B) which is bonded to the oxygen atom in a position which enables Coup (B) to split off from said Coup (A) and form a coupling reaction product with said oxidized color developing agent, and PUG is a development inhibitor which is released when Coup (B) undergoes said coupling reaction.
Claim 2
Dependent Claim
115 words
A silver halide photosensitive color photographic material comprising a coupler of the formula ##STR9## wherein Coup (A) is a non-diffusion type coupling component (A) bonded to the oxygen atom at a position which enables Coup (A) to form a colored or colorless compound as a result of coupling with and releasing from an oxidized color developing agent, Coup (B) is a diffusion type coupling component (B) which is bonded to the oxygen atom in a position which enables Coup (B) to split off from said Coup (A) and form a coupling reaction product with said oxidized color developing agent, and PUG is a development inhibitor which is released when Coup (B) undergoes said coupling reaction.
Claim 3
Dependent Claim
28 words
The silver halide photosensitive color photographic material of claim 1, wherein said Coup (A) and Coup (B) are each selected from residues of yellow, cyan and magenta couplers.
Claim 4
Dependent Claim
41 words
The silver halide photosensitive color photographic material of claim 2, wherein said Coup (A) and Coup (B) are each residues of yellow couplers selected from the group consisting of acetoanilide group containing yellow couplers and pivaloyl acetoanilide group containing yellow couplers.
Claim 5
Dependent Claim
40 words
The silver halide photosensitive color photographic material of claim 2, wherein said Coup (A) and Coup (B) are each residues of magenta couplers selected from the group consisting of pyrazolone group containing magenta couplers and indazolone group containing magenta couplers.
Claim 6
Dependent Claim
38 words
The silver halide photosensitive color photographic material of claim 2, wherein said Coup (A) and Coup (B) are each residues of cyan couplers selected from the group consisting of naphthol group containing couplers and phenol group containing couplers.
Claim 7
Dependent Claim
21 words
The silver halide photosensitive color photographic material of claim 1, wherein said coupler is selected from the group consisting of ##STR10##
Claim 8
Dependent Claim
50 words
The silver halide photosensitive color photographic material of claim 1, wherein said development inhibitor is selected from those containing a mercaptotetrazole group, a selenotetrazole group, a mercaptobenzothiazole group, a selenobenzothiazole group, a mercaptobenzoxazole group, a mercaptobenzimidazole group, a selenobenzimidazole group, a benzotriazole group, a benzodiazole group and an iodine atom.
Claim 9
Dependent Claim
48 words
The silver halide photosensitive color photographic material of claim 1, wherein said material further comprises a support having thereon at least one emulsion selected from the group consisting of a red sensitive silver halide emulsion, a green sensitive silver halide emulsion, and a blue sensitive silver halide emulsion.
Claim 10
Dependent Claim
20 words
The silver halide photosensitive color photographic material of claim 8, wherein said emulsion is applied in more than one layer.
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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |