US4234679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry image forming materials
Assignee: Asahi Kasei Corp
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Filing: 1978-10-12
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Granted: 1980-11-18
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Expires: 1998-10-12
Abstract
Abstract A dry image forming material comprising: (a) an organic silver salt oxidizing agent; (b) a photosensitive silver compound or a component capable of forming a photosensitive silver compound by the reaction with the organic silver salt oxidizing agent (a); (c) a reducing agent for silver ion; and (d) at least one compound selected from the group consisting of α,α,α',α'-o-tetrabromoxylene, α,α,α',α'-m-tetrabromoxylene, α,α,α',α'-p-tetrabromoxylene, 1,2-diiodoethane and tribromoacetic acid.
Inventors
- 👤 Kageyasu Akashi
- 👤 Yoshio Hayashi
- 👤 Tatsumi Arakawa
- 👤 Takeo Kimura
- 👤 Hidehiko Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
65 words
A dry image forming material comprising: (a) an organic silver salt oxidizing agent; (b) a photosensitive silver halide or a component capable of forming a photosensitive silver halide by the reaction with the organic silver salt oxidizing agent (a); (c) a reducing agent for silver ion; and (d) at least one compound selected from the group consisting of α,α,α',α'-o-tetrabromoxylene, α,α,α',α'-m-tetrabromoxylene, α,α,α',α'-p-tetrabromoxylene, 1,2-diiodoethane and tribromoacetic acid.
Claim 2
Dependent Claim
65 words
A dry image forming material comprising: (a) an organic silver salt oxidizing agent; (b) a photosensitive silver halide or a component capable of forming a photosensitive silver halide by the reaction with the organic silver salt oxidizing agent (a); (c) a reducing agent for silver ion; and (d) at least one compound selected from the group consisting of α,α,α',α'-o-tetrabromoxylene, α,α,α',α'-m-tetrabromoxylene, α,α,α',α'-p-tetrabromoxylene, 1,2-diiodoethane and tribromoacetic acid.
Claim 3
Dependent Claim
16 words
The dry image forming material as claimed in claim 1, wherein the compound (d) is α,α,α',α'-o-tetrabromoxylene.
Claim 4
Dependent Claim
16 words
The dry image forming material as claimed in claim 1, wherein the compound (d) is α,α,α',α'-m-tetrabromoxylene.
Claim 5
Dependent Claim
40 words
The dry image forming material as claimed in claim 1, wherein the amount of compound (d) ranges from about 1 percent by mole to about 100 percent by mole based on the mole of the organic silver salt oxidizing agent.
Claim 6
Dependent Claim
40 words
The dry image forming material as claimed in claim 4, wherein the amount of compound (d) ranges from about 1 percent by mole to about 25 percent by mole based on the mole of the organic silver salt oxidizing agent.
Claim 7
Dependent Claim
34 words
The dry image forming material as claimed in claim 1, wherein the organic silver salt oxidizing agent is a silver salt of a long chain aliphatic carboxylic acid having 12 to 24 carbon atoms.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |