US3663222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing steric block with liquid photopolymerizable composition
Assignee: Asahi Kasei Corp
•
Filing: 1968-06-06
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Granted: 1972-05-16
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Expires: 1988-06-06
Abstract
Abstract A process for preparing a photopolymerized steric image-bearing block for printing, display, ceramic ware matrix, etc, which comprises disposing an image-bearing transparency or semitransparency or one side of a photopolymerizable composition, irradiating an actinic light to both sides thereof and removing the unexposed area to give a steric image-bearing block in which a relief portion and a substrate layer are integrally formed. There can also be obtained a steric image-bearing block having a substrate layer having partly different thickness.
Inventors
- 👤 Kiyoshi Akamatsu
- 👤 Hisaaki Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/20; G03F7/2022; C; C08; C08F; C08F283/00; C08F283/01; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A process according to claim 1 wherein said irradiation to form said substrate layer is effected with a sufficient dose of said actinic light to form said substrate layer having a thickness of at least 1 percent of the total thickness of the photopolymerizable composition layer.
Claim 2
Dependent Claim
21 words
A process according to claim 1 wherein said irradiation of actinic light is effected to both sides of said composition simultaneously.
Claim 3
Dependent Claim
35 words
A process according to claim 1 wherein said irradiation of actinic light is effected in such a manner that either one side of said composition is first irradiated and the remaining side is subsequently irradiated.
Claim 4
Dependent Claim
58 words
A process according to claim 1 wherein said irradiation of actinic light is effected in such a manner that a predetermined dose of actinic light is first given to a part of said composition by way of partly masking the irradiation and continuing the irradiation after removing the mask to obtain said substrate layer having partly different thickness.
References Cited (Backward Citations)
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Cited
US2480749A
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US2760863A
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US2929710A
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US3169066A
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US3157505A
Cited
US3210187A
Cited
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |