US4409323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material
Assignee: Konica Minolta Inc
•
Filing: 1981-02-13
•
Granted: 1983-10-11
•
Expires: 2001-02-13
Abstract
Abstract A silver halide photographic material containing a coupler capable of releasing a photographically useful group in a controllable timing.
Inventors
- 👤 Ryosuke Sato
- 👤 Yuji Hotta
- 👤 Katsumi Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:06
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C07D231/00; C07D231/02; C07D231/06; C07D231/08; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07D285/135; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30576; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158; Y10S430/159
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
A photographic material comprising a light sensitive silver halide emulsion layer provided on a support, said material containing a compound represented by the formula: A-TIME-PUG, wherein A is a coupler group capable of a coupling reaction with an oxidized color developing agent, PUG is a photographically useful group, and TIME is a timing group joining said coupler and said photographically useful group and further wherein said timing group is cleavable from said coupler group on reaction of said coupler group with said oxidized color developing agent and further wherein the resulting cleaved timing and photographically useful group entity-TIME-PUG is able to undergo electron transfer along a conjugated system therein to cleave the PUG after the group-TIME-PUG is cleaved from said coupler group A and further wherein one end of TIME is connected with PUG through a methylene group contained in TIME and substituted by R1 and R2, wherein R1 and R2 are individually a hydrogen atom, an alkyl group or an aryl group and wherein the other end of TIME is connected to A at the coupling site of A through an O, S or N atom contained in TIME.
Claim 2
Dependent Claim
190 words
A photographic material comprising a light sensitive silver halide emulsion layer provided on a support, said material containing a compound represented by the formula: A-TIME-PUG, wherein A is a coupler group capable of a coupling reaction with an oxidized color developing agent, PUG is a photographically useful group, and TIME is a timing group joining said coupler and said photographically useful group and further wherein said timing group is cleavable from said coupler group on reaction of said coupler group with said oxidized color developing agent and further wherein the resulting cleaved timing and photographically useful group entity-TIME-PUG is able to undergo electron transfer along a conjugated system therein to cleave the PUG after the group-TIME-PUG is cleaved from said coupler group A and further wherein one end of TIME is connected with PUG through a methylene group contained in TIME and substituted by R1 and R2, wherein R1 and R2 are individually a hydrogen atom, an alkyl group or an aryl group and wherein the other end of TIME is connected to A at the coupling site of A through an O, S or N atom contained in TIME.
Claim 3
Dependent Claim
59 words
A photographic material according to claim 1 wherein the TIME is represented by the following formula: ##STR15## wherein the left hand side is attached to the coupler group; Z is O, S or ##STR16## R 1 , R 2 and R 3 are individually hydrogen, alkyl or aryl groups; and Q is a 1,2- or 1,4-phenylene or naphthylene group.
Claim 4
Dependent Claim
43 words
A photographic material according to claim 1 wherein the PUG is development inhibitor or accelerator, bleach inhibitor or accelerator, developing agent, fixing agent, hardening agent, tanning agent, toning agent, fogging agent, antifogging agent, chemical or optical sensitizer or desensitizer, photographic dye, or coupler.
Claim 5
Dependent Claim
18 words
A photographic material according to claim 3 wherein the PUG is development inhibitor, bleach inhibitor or photographic dye.
Claim 6
Dependent Claim
13 words
A photographic material according to claim 3 wherein the PUG is development inhibitor.
Claim 7
Dependent Claim
23 words
A photographic material according to claim 5 wherein the development inhibitor is mercaptotetrazole, selenotetrazole, mercaptobenzothiazole, selenobenzothiazole, mercaptobenzooxazole, mercaptobenzimidazole, selenobenzimidazole, benzodiazole or benzotriazole compound.
Claim 8
Dependent Claim
17 words
A photographic material according to claim 6 wherein the development inhibitor is mercaptotetrazole, mercaptobenzothiazole or mercaptobenzimidazole compound.
Claim 9
Dependent Claim
14 words
A photographic material according to claim 7 wherein the development inhibitor is mercaptobenzotetrazole compound.
Claim 10
Dependent Claim
27 words
A photographic material according to claim 1 wherein the coupler group is a dye forming photographic coupler from which hydrogen atom attached to coupling position is released.
References Cited (Backward Citations)
US2298443A
Cited
US2369489A
Cited
US2311082A
Cited
US2423730A
Cited
US2367531A
Cited
US2343703A
Cited
US2407210A
Cited
US2474293A
Cited
US2600788A
Cited
US2772162A
Cited
US2875057A
Cited
US2908573A
Cited
US2895826A
Cited
US3034892A
Cited
US3048194A
Cited
US3227554A
Cited
US3148062A
Cited
US3002836A
Cited
US3041236A
Cited
US3062653A
Cited
US3384657A
Cited
US3277554A
Cited
US3152896A
Cited
US3265506A
Cited
US3447928A
Cited
US3519429A
Cited
US3632345A
Cited
US3617291A
Cited
US3615506A
Cited
US3733201A
Cited
US3705801A
Cited
US3958993A
Cited
US3928041A
Cited
US3961959A
Cited
US4026709A
Cited
US3926631A
Cited
US4012258A
Cited
US4009038A
Cited
US4010035A
Cited
US4040835A
Cited
US4248962A
Cited
US4283486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |