US4416977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic photosensitive material
Assignee: Mitsubishi Paper Mills Ltd
•
Filing: 1982-02-16
•
Granted: 1983-11-22
•
Expires: 2002-02-16
Abstract
Abstract There is disclosed a silver halide photographic photosensitive material which contains in at least one of silver halide emulsion layers and colloid layers permeable to water through to or out from said emulsion layer at least one compound represented by the following general formula (I): <IMAGE> (I) wherein A, R1, R2, R3 and R4 are the same as defined previously. This photosensitive material has stability against over-development fogging.
Inventors
- 👤 Minoru Ohashi
- 👤 Kiyoshi Futaki
- 👤 Katsuaki Iwaosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:32
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12; C07D417/00; C07D417/02; C07D417/12; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
126 words
In a silver halide photograph photosensitive material which comprises a support and at least one photographic layer provided thereon, the improvement which comprises including in at least one of silver halide emulsion layers and colloid layers permeable to water through to or out from said emulsion layer at least one development fog inhibiting compound represented by the following general formula (I): ##STR24## wherein A represents the heterocyclic group of a mercapto-antifoggant; R 1 , R 2 and R 3 represent each a hydrogen atom, halogen atom, alkyl group, or phenyl group; R 1 and R 2 , or R 2 and R 3 may be bonded to each other to form a benzene ring; and R 4 represents a hydrogen atom, alkyl group, or phenyl group.
Claim 2
Dependent Claim
126 words
In a silver halide photograph photosensitive material which comprises a support and at least one photographic layer provided thereon, the improvement which comprises including in at least one of silver halide emulsion layers and colloid layers permeable to water through to or out from said emulsion layer at least one development fog inhibiting compound represented by the following general formula (I): ##STR24## wherein A represents the heterocyclic group of a mercapto-antifoggant; R 1 , R 2 and R 3 represent each a hydrogen atom, halogen atom, alkyl group, or phenyl group; R 1 and R 2 , or R 2 and R 3 may be bonded to each other to form a benzene ring; and R 4 represents a hydrogen atom, alkyl group, or phenyl group.
Claim 3
Dependent Claim
85 words
A silver halide emulsion which contains a least one development fog inhibiting compound represented by the following general formula (I): ##STR25## wherein A represents the heterocyclic group of a mercapto-antifoggant; R 1 , R 2 and R 3 represent each a hydrogen atom, halogen atom, alkyl group, or phenyl group; R 1 and R 2 , or R 2 and R 3 may be bonded to each other to form a benzene ring; and R 4 represents a hydrogen atom, alkyl group, or phenyl group.
Claim 4
Dependent Claim
85 words
A silver halide emulsion which contains a least one development fog inhibiting compound represented by the following general formula (I): ##STR25## wherein A represents the heterocyclic group of a mercapto-antifoggant; R 1 , R 2 and R 3 represent each a hydrogen atom, halogen atom, alkyl group, or phenyl group; R 1 and R 2 , or R 2 and R 3 may be bonded to each other to form a benzene ring; and R 4 represents a hydrogen atom, alkyl group, or phenyl group.
Claim 5
Dependent Claim
126 words
A process for forming images which comprises imagewise exposing a silver halide photographic photosensitive material which contains in at least one of silver halide emulsion layers and colloid layers permeable to water through to or out from said emulsion layer at least one development fog inhibiting compound represented by the following general formula (I): ##STR26## wherein A represents the heterocyclic group of a mercapto-antifoggant; R 1 , R 2 and R 3 represent each a hydrogen atom, halogen atom, alkyl group, or phenyl group; R 1 and R 2 , or R 2 and R 3 may be bonded to each other to form a benzene ring; and R 4 represents a hydrogen atom, alkyl group or phenyl group and then developing the exposed photosensitive material.
Claim 6
Dependent Claim
126 words
A process for forming images which comprises imagewise exposing a silver halide photographic photosensitive material which contains in at least one of silver halide emulsion layers and colloid layers permeable to water through to or out from said emulsion layer at least one development fog inhibiting compound represented by the following general formula (I): ##STR26## wherein A represents the heterocyclic group of a mercapto-antifoggant; R 1 , R 2 and R 3 represent each a hydrogen atom, halogen atom, alkyl group, or phenyl group; R 1 and R 2 , or R 2 and R 3 may be bonded to each other to form a benzene ring; and R 4 represents a hydrogen atom, alkyl group or phenyl group and then developing the exposed photosensitive material.
Claim 7
Dependent Claim
26 words
A silver halide photographic photosensitive material according to claim 1 wherein the amount of said compound is at least 0.1 millimole per mole of silver halide.
Claim 8
Dependent Claim
26 words
A silver halide photograph photosensitive material according to claim 4 wherein the amount of said compound is 0.1 to 100 millimoles per mole of silver halde.
Claim 9
Dependent Claim
15 words
A silver halide photograph photosensitive material according to claim 4 wherein said compound is ##STR27##
Claim 10
Dependent Claim
24 words
A silver halide emulsion according to claim 2 wherein the amount of said compound is at least 0.1 millimole per mole of silver halide.
Claim 11
Dependent Claim
24 words
A silver halide emulsion according to claim 7 wherein the amount of said compound is 0.1 to 100 millimoles per mole of silver halide.
Claim 12
Dependent Claim
13 words
A silver halide emulsion according to claim 7 wherein said compound is ##STR28##
Claim 13
Dependent Claim
22 words
A process according to claim 3 wherein the amount of said compound is at least 0.1 millimole per mole of silver halide.
Claim 14
Dependent Claim
22 words
A process according to claim 10 wherein the amount of said compound is 0.1 to 100 millimoles per mole of silver halide.
Claim 15
Dependent Claim
11 words
A process according to claim 10 wherein said compound is ##STR29##
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) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |