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Patent US4435230A successfully refreshed from Google Patents.
US4435230A
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Aluminum alloy printing plate and method for manufacturing same
Assignee: Fujifilm Holdings Corp
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Filing: 1982-08-20
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Granted: 1984-03-06
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Expires: 2002-08-20
Abstract
Abstract An aluminum alloy plate for printing is composed of 0.05-0.30% Mg, 0.05-0.30% Si, 0.15-0.30% Fe and the remainder Al and ordinary impurities. This printing plate is manufactured through the steps of subjecting an aluminum alloy ingot of this composition to a thermal soaking treatment; carrying out a hot rolling process; then carrying out a cold rolling process on the hot rolled alloy at least at a reduction of 70%; and carrying out low temperature annealing at a temperature of 150 DEG -250 DEG C. for at least one hour.
Inventors
- 👤 Chozo Fujikura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:11
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/04; B41N1/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
An aluminum alloy printing plate comprising a printing plate of an aluminum alloy consisting essentially of 0.05-0.30% Mg, 0.05-0.30% Si, 0.15-0.30% Fe and the remainder Al and ordinary impurities said plate having a uniformed grained surface and a photosensitive layer thereon.
Claim 2
Dependent Claim
41 words
An aluminum alloy printing plate comprising a printing plate of an aluminum alloy consisting essentially of 0.05-0.30% Mg, 0.05-0.30% Si, 0.15-0.30% Fe and the remainder Al and ordinary impurities said plate having a uniformed grained surface and a photosensitive layer thereon.
Claim 3
Independent Claim
89 words
A method for producing an aluminum alloy printing plate comprising the steps of: subjecting an aluminum alloy consisting essentially of 0.05-0.30% Mg, 0.05-0.30% Si, 0.15-0.30% Fe and the remainder Al and ordinary impurities to a thermal soaking treatment, hot-rolling the thus-treated alloy, cold-rolling the hot-rolled alloy at a reduction of at least 70%, annealing the cold-rolled alloy at a temperature between 150° to 250° C. over a period of at least one hour, and roughening the surface of the resulting alloy so as to have a uniformly grained surface.
Claim 4
Independent Claim
89 words
A method for producing an aluminum alloy printing plate comprising the steps of: subjecting an aluminum alloy consisting essentially of 0.05-0.30% Mg, 0.05-0.30% Si, 0.15-0.30% Fe and the remainder Al and ordinary impurities to a thermal soaking treatment, hot-rolling the thus-treated alloy, cold-rolling the hot-rolled alloy at a reduction of at least 70%, annealing the cold-rolled alloy at a temperature between 150° to 250° C. over a period of at least one hour, and roughening the surface of the resulting alloy so as to have a uniformly grained surface.
Claim 5
Dependent Claim
31 words
A method for producing an aluminum alloy printing plate as set forth in claim 2, wherein after the roughening treatment, the resultant aluminum alloy plate is coated with a photosensitive layer.
References Cited (Backward Citations)
US3911819A
Cited
US4272342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |