Patent US3961959A successfully refreshed from Google Patents.
US3961959A
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Process for developing a light-sensitive silver halide photographic material
Assignee: Konica Minolta Inc
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Filing: 1974-01-28
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Granted: 1976-06-08
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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 21:21
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)
US3227551A
Cited
US3632345A
Cited
US3620745A
Cited
US3703375A
Cited
US3859095A
Cited
US3869291A
Cited
US3674478A
Cited
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 |