Patent US4288529A successfully refreshed from Google Patents.
US4288529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of photo-curable composite materials to make a stencil
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1980-01-25
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Granted: 1981-09-08
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Expires: 2000-01-25
Abstract
Abstract A photo-curable composite material used for preparing various stencils for screen printing, textile printing or the like, which comprises a flat, flexible and photo-transmitting thin film (A); a flat and flexible film (B); a liquid photo-curable resin and a flat screen material, said films (A) and (B) being air-tightly bonded to each other at the peripheral portion thereof to form a flat inner space therein, said liquid resin being filled in said inner space to form a layer and said screen material also being placed in the inner space substantially in parallel with the inner walls of the films (A) and (B).
Inventors
- 👤 Takezo Sano
- 👤 Haruo Inoue
- 👤 Akihiro Furuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:22
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; G; G03; G03F; G03F7/00; G03F7/12; G03F7/20; G03F7/2002; G03F7/2012; B32B2262/00; B32B2262/10; B32B2262/101; B32B2305/00; B32B2305/10; B32B2305/20; B32B2559/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
141 words
A process for preparing a stencil which comprises: placing a photomask on a photo-curable composite material which comprises a flat, flexible and photo-transmitting thin film (A); a flat and flexible film (B); a liquid photo-curable resin and a flat screen material, said films (A) and (B) being air-tightly bonded to each other at their peripheral portion thereof to form a flat inner space therebetween, said liquid photo-curable resin being disposed in said inner space to form a layer, and said screen material also being disposed in the inner space substantially in parallel with the inner walls of the films (A) and (B); curing the liquid photo-curable resin in the photo-curable composite material by irradiation with actinic light through said photomask; and removing the uncured resin to develop an image after peeling off at least one film from the irradiated composite material.
Claim 2
Dependent Claim
141 words
A process for preparing a stencil which comprises: placing a photomask on a photo-curable composite material which comprises a flat, flexible and photo-transmitting thin film (A); a flat and flexible film (B); a liquid photo-curable resin and a flat screen material, said films (A) and (B) being air-tightly bonded to each other at their peripheral portion thereof to form a flat inner space therebetween, said liquid photo-curable resin being disposed in said inner space to form a layer, and said screen material also being disposed in the inner space substantially in parallel with the inner walls of the films (A) and (B); curing the liquid photo-curable resin in the photo-curable composite material by irradiation with actinic light through said photomask; and removing the uncured resin to develop an image after peeling off at least one film from the irradiated composite material.
Claim 3
Dependent Claim
14 words
A process according to claim 1, wherein said screen material is a glass mat.
References Cited (Backward Citations)
US3532052A
Cited
US3753715A
Cited
US3801410A
Cited
US3895949A
Cited
US4093464A
Cited
US3961961A
Cited
US4076535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |