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US4243746A
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US
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Dispersion imaging material and method of producing image thereon
Assignee: Asahi Kasei Corp
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Filing: 1979-03-05
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Granted: 1981-01-06
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Expires: 1999-03-05
Abstract
Abstract A novel dispersion imaging material comprising a substrate, a sublayer thereon comprising at least 70% by weight of a member selected from palladium, gold, germanium and combinations thereof and having a thickness of 5 A to 200 A, and a main imaging layer on said sublayer comprising at least 50% by weight of tin, and optionally as the outermost layer a protective layer comprising an organic polymer. The sublayer modifies the layer structure of the tin-based main imaging layer. The imaging material has a high safety in respect of toxicity as well as an excellent gradation and a high sensitivity. The imaging material can form thereon an image by a dry process even in a light room without the conventional development and fixation steps.
Inventors
- 👤 Takeshi Ueda
- 👤 Shozo Kinoshita
- 👤 Kiichiro Sasaguri
- 👤 Hidehiko Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:11
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/56; G03C1/00; G03C1/705; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/162; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
118 words
A dispersion imaging material comprising a substrate; a sublayer formed on the substrate and having a thickness of 5 A to 200 A, said sublayer consisting of a member selected from the group consisting of palladium, gold, germanium and combinations thereof, or at least 70% by weight of a member selected from the group consisting of palladium, gold, germanium and combinations thereof, and one or more other metals selected from tin, bismuth, lead, antimony, zinc, aluminum and indium; and a main imaging layer formed on the sublayer and consisting of tin, or at least 50% by weight of tin and a member selected from the group consisting of zinc, aluminum, antimony, indium, lead, bismuth, cadmium and combinations thereof.
Claim 2
Dependent Claim
118 words
A dispersion imaging material comprising a substrate; a sublayer formed on the substrate and having a thickness of 5 A to 200 A, said sublayer consisting of a member selected from the group consisting of palladium, gold, germanium and combinations thereof, or at least 70% by weight of a member selected from the group consisting of palladium, gold, germanium and combinations thereof, and one or more other metals selected from tin, bismuth, lead, antimony, zinc, aluminum and indium; and a main imaging layer formed on the sublayer and consisting of tin, or at least 50% by weight of tin and a member selected from the group consisting of zinc, aluminum, antimony, indium, lead, bismuth, cadmium and combinations thereof.
Claim 3
Dependent Claim
19 words
A dispersion imaging material as claimed in claim 1, which further comprises a protective layer comprising an organic polymer.
Claim 4
Dependent Claim
18 words
A dispersion imaging material as claimed in claim 1, wherein said substrate is made of an organic polymer.
Claim 5
Dependent Claim
20 words
A dispersion imaging material as claimed in claim 2, wherein said protective layer has a thickness of 0.1μ to 3μ.
Claim 6
Independent Claim
127 words
A method of producing an image by a dry process, which method comprises: the step of providing a dispersion imaging material comprising a substrate; a sublayer formed on the substrate, comprising at least 70% by weight of a member selected from the group consisting of palladium, gold, germanium and combinations thereof and having a thickness of 5 A to 200 A; and a main imaging layer formed on the sublayer and comprising at least 50% by weight of tin; and the step of applying to said dispersion imaging material energy in an amount sufficient to increase the absorbed energy in the imaging layer above a certain critical threshold value to decrease the optical density of said imaging layer at the areas where subjected to said applied energy.
Claim 7
Independent Claim
127 words
A method of producing an image by a dry process, which method comprises: the step of providing a dispersion imaging material comprising a substrate; a sublayer formed on the substrate, comprising at least 70% by weight of a member selected from the group consisting of palladium, gold, germanium and combinations thereof and having a thickness of 5 A to 200 A; and a main imaging layer formed on the sublayer and comprising at least 50% by weight of tin; and the step of applying to said dispersion imaging material energy in an amount sufficient to increase the absorbed energy in the imaging layer above a certain critical threshold value to decrease the optical density of said imaging layer at the areas where subjected to said applied energy.
Claim 8
Independent Claim
167 words
A method of producing an image by a dry process, which method comprises: the step of providing a dispersion imaging material comprising a substrate; a sublayer formed on the substrate, and having a thickness of 5 A to 200 A, said sublayer consisting of a member selected from the group consisting of palladium, gold, germanium and combinations thereof, or at least 70% by weight of a member selected from the group consisting of palladium, gold, germanium and combinations thereof; and a main imaging layer formed on the sublayer and consisting of tin, or at least 50% by weight of tin and a member selected from the group consisting of zinc, aluminum, antimony, indium, lead, bismuth, cadmium and combinations thereof; and the step of applying to said dispersion imaging material energy in an amount sufficient to increase the absorbed energy in the imaging layer above a certain critical threshold value to decrease the optical density of said imaging layer at the areas where subjected to said applied energy.
Claim 9
Independent Claim
167 words
A method of producing an image by a dry process, which method comprises: the step of providing a dispersion imaging material comprising a substrate; a sublayer formed on the substrate, and having a thickness of 5 A to 200 A, said sublayer consisting of a member selected from the group consisting of palladium, gold, germanium and combinations thereof, or at least 70% by weight of a member selected from the group consisting of palladium, gold, germanium and combinations thereof; and a main imaging layer formed on the sublayer and consisting of tin, or at least 50% by weight of tin and a member selected from the group consisting of zinc, aluminum, antimony, indium, lead, bismuth, cadmium and combinations thereof; and the step of applying to said dispersion imaging material energy in an amount sufficient to increase the absorbed energy in the imaging layer above a certain critical threshold value to decrease the optical density of said imaging layer at the areas where subjected to said applied energy.
Claim 10
Dependent Claim
32 words
A method according to claim 5, wherein said energy is radiant energy having a short pulse width and is applied through a mask having an image thereon to said dispersion imaging material.
Claim 11
Dependent Claim
27 words
A dispersion imaging material as claimed in claim 1, wherein said main imaging layer consists of tin, tin and lead, tin and antimony or tin and bismuth.
Claim 12
Dependent Claim
24 words
A method according to claim 5, wherein said main imaging layer consists of tin, tin and lead, tin and antimony or tin and bismuth.
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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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |