Patent US4283479A successfully refreshed from Google Patents.
US4283479A
Expired / Lapsed
US
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Silver halide photographic materials and a process forming relief images
Assignee: Fujifilm Holdings Corp
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Filing: 1980-02-22
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Granted: 1981-08-11
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Expires: 2000-02-22
Abstract
Abstract Silver halide photographic materials providing wash-off relief images and having excellent shelf life comprising a support having formed thereon at least a silver halide photosensitive emulsion layer and said silver halide emulsion layer or another hydrophilic colloid layer containing a polyhydroxy-spiro-bis-chroman tanning developing agent and a gallic acid alkyl ester is disclosed with a process forming relief images.
Inventors
- 👤 Tsutomu Hamaoka
- 👤 Yasuo Kasama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:01
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/315; G03C5/30; G03C5/3021
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
A silver halide photographic material comprising a support having thereon a photosensitive silver halide photographic emulsion layer, said photosensitive silver halide emulsion layer or another hydrophilic colloid layer on said support containing a compound of the formula (I) and a compound of the formula (II): ##STR5## wherein R represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms and R' represents an alkyl group having 1 to 10 carbon atoms.
Claim 2
Dependent Claim
74 words
A silver halide photographic material comprising a support having thereon a photosensitive silver halide photographic emulsion layer, said photosensitive silver halide emulsion layer or another hydrophilic colloid layer on said support containing a compound of the formula (I) and a compound of the formula (II): ##STR5## wherein R represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms and R' represents an alkyl group having 1 to 10 carbon atoms.
Claim 3
Dependent Claim
38 words
The photographic material of claim 1, wherein the amount of the compound of formula (I) is about 0.01 to 1 mol/mol Ag and the amount of the compound of formula (II) is about 0.005 to 1 mol/mol Ag.
Claim 4
Dependent Claim
22 words
The photographic material of claim 1, wherein R in the formula (I) is an alkyl group having 1 to 5 carbon atoms.
Claim 5
Dependent Claim
21 words
The photographic material of claim 1, wherein R' in formula (II) is an alkyl group having 1 to 5 carbon atoms.
Claim 6
Dependent Claim
15 words
The photographic material of claim 1, wherein R' in formula (II) is a propyl group.
Claim 7
Dependent Claim
39 words
A process for forming relief images which comprises image-wise exposing the silver halide photographic material as claimed in claim 1 followed by processing the silver halide photographic material with an alkaline aqueous solution having a pH higher than 9.
Claim 8
Dependent Claim
103 words
A process for forming relief images which comprises imagewise exposing a silver halide photographic material comprising a support having thereon at least a photosensitive silver halide photographic emulsion layer and at least one of said photosensitive silver halide emulsion layer or another hydrophilic colloid layer on said support containing a compound of the formula (I): ##STR6## wherein R represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and a compound of the formula (II): ##STR7## wherein R' represents an alkyl group having 1 to 10 carbon atoms, and developing said imagewise exposed material with an alkaline aqueous solution.
Claim 9
Dependent Claim
103 words
A process for forming relief images which comprises imagewise exposing a silver halide photographic material comprising a support having thereon at least a photosensitive silver halide photographic emulsion layer and at least one of said photosensitive silver halide emulsion layer or another hydrophilic colloid layer on said support containing a compound of the formula (I): ##STR6## wherein R represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and a compound of the formula (II): ##STR7## wherein R' represents an alkyl group having 1 to 10 carbon atoms, and developing said imagewise exposed material with an alkaline aqueous solution.
Claim 10
Dependent Claim
17 words
The process of claim 7, wherein R is an alkyl group having 1 to 5 carbon atoms.
Claim 11
Dependent Claim
17 words
The process of claim 7, wherein R' is an alkyl group having 1 to 5 carbon atoms.
Claim 12
Dependent Claim
11 words
The process of claim 9, wherein R' is a propyl group.
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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |