US3961959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for developing a light-sensitive silver halide photographic material
Assignee: Konica Minolta Inc
•
Filing: 1974-01-28
•
Granted: 1976-06-08
•
Expires: 1994-01-28
Abstract
Abstract A process for developing a light-sensitive silver halide photographic material in the presence of a new development inhibitor releasing type compound which liberates a compound having development inhibiting action and simultaneously produces a colourless compound.
Inventors
- 👤 Mitsuto Fujiwhara
- 👤 Keiji Kasai
- 👤 Yoshinobu Nakagawa
- 👤 Hiroshi Tokura
- 👤 Kenji Itoh
- 👤 Seiji Muramoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:43
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D211/74; C07D233/00; C07D233/54; C07D233/66; C07D233/86; G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
106 words
A process for developing an imagewise exposed light-sensitive silver halide protographic material in the presence of a development releasing inhibitor compound which liberates a development inhibitor and simultaneously produces a colourless compound, said development releasing inhibitor compound comprising ##EQU2## wherein Z represents a group selected from the group consisting of a piperidone, a lactone having a 4- to 7-membered ring, a pyrrolidone, a hydantoin and an oxyindole, and Y represents a group that forms a development inhibitor when the sulphur atom of the thioether bond is split from the heterocyclic ring to release an aryl mercapto compound, a heterocyclic mercapto compound, a thioglycol, cysteine or glutathione.
Claim 2
Dependent Claim
106 words
A process for developing an imagewise exposed light-sensitive silver halide protographic material in the presence of a development releasing inhibitor compound which liberates a development inhibitor and simultaneously produces a colourless compound, said development releasing inhibitor compound comprising ##EQU2## wherein Z represents a group selected from the group consisting of a piperidone, a lactone having a 4- to 7-membered ring, a pyrrolidone, a hydantoin and an oxyindole, and Y represents a group that forms a development inhibitor when the sulphur atom of the thioether bond is split from the heterocyclic ring to release an aryl mercapto compound, a heterocyclic mercapto compound, a thioglycol, cysteine or glutathione.
Claim 3
Dependent Claim
68 words
A process for developing a light-sensitive silver halide photographic material as claimed in claim 1 in which Z represents a piperidone derivative radical, lactone derivative radical having 4 - 7 membered ring, pyrrolidone derivative radical, hydantoin derivative radical or oxyindole derivative radical and Y represents a mercaptotetrazole derivative radical, mercaptothiazole derivative radical, mercapto-oxydiazole derivative radical, mercaptopiperidine derivatives radical, mercaptothiadiazole derivative radical, mercaptotriazine derivative radical or mercaptobenzene derivative radical.
Claim 4
Dependent Claim
75 words
A process for developing a light-sensitive silver halide photographic material as claimed in claim 1 in which Z represents a radical selected from 2-piperidone, 3-piperidone and 4-piperidone derivative radical, lactone derivative radical having 5 - 6 membered ring, pyrrolidone derivative radical, hydantoin derivative radical and oxyindole derivative radical and Y represents a radical selected from 1-phenyl-2-mercaptotetrazole radical, 1-nitro-phenyl-5-mercaptotetrazole radical, 1-naphthyl-5-mercaptotetrazole radical, 2-mercaptobenzthiazole radical, mercaptonaphthothiazole radical, 2-mercaptothiazole radical, 1-mercapto-2-benzoic acid radical, 1-mercapto-2-nitrobenzene radical and 1-mercapto-3-heptadecanoylaminobenzene radical.
Claim 5
Dependent Claim
35 words
A process for developing a light-sensitive silver halide photographic material as claimed in claim 1 in which said compound is used in an amount of 0.1 - 10 g per 1 kg of an emulsion.
Claim 6
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC3##
Claim 7
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC4##
Claim 8
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC5##
Claim 9
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC6##
Claim 10
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC7##
Claim 11
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC8##
Claim 12
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC9##
Claim 13
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC10##
Claim 14
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC11##
Claim 15
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC12##
Claim 16
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC13##
Claim 17
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC14##
Claim 18
Dependent Claim
13 words
A process of claim 1 wherein the development releasing inhibitor compound is ##SPC15##
Claim 19
Dependent Claim
35 words
A process of claim 1 wherein Y represents a group that forms a development inhibitor when the sulphur atom of the thioether bond is split from the heterocyclic ring to release a heterocyclic mercapto compound.
Claim 20
Dependent Claim
33 words
A process of claim 1 wherein Y represents a group that forms a development inhibitor when the sulphur atom of the thioether bond is split from the heterocyclic ring to release a thioglycol.
Claim 21
Dependent Claim
32 words
A process of claim 1 wherein Y represents a group that forms a development inhibitor when the sulphur atom of the thioether bond is split from the hterocyclic ring to release cysteine.
Claim 22
Dependent Claim
32 words
A process of claim 1 wherein Y represents a group that forms a development inhibitor when the sulphur atom of the thioether bond is split from the heterocyclic ring to release glutathione.
References Cited (Backward Citations)
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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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |