US3634078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum supports for planographic printing plates
Assignee: Kalle GmbH and Co KG
•
Filing: 1966-10-03
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Granted: 1972-01-11
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Expires: 1986-10-03
Abstract
Abstract This invention relates to a method for improving the receptivity for adhesively applied coatings of an aluminum surface which comprises treating the surface with a solution comprising at least one trihydroxybenzene carboxylic acid and drying. The invention also includes a reproduction material using the treated aluminum and a process for making a printing plate from the said reproduction material.
Inventors
- 👤 Fritz Uhlig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:24
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/28; B; B41; B41N; B41N3/00; B41N3/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A reproduction material according to claim 1 in which the acid is 3,4,5-trihydroxybenzene carboxylic acid.
Claim 2
Dependent Claim
15 words
A reproduction material according to claim 1 in which the acid is 2,4,6-trihydroxybenzene carboxylic acid.
Claim 3
Dependent Claim
15 words
A reproduction material according to claim 1 in which the acid is 2,3,4-trihydroxybenzene carboxylic acid.
Claim 4
Dependent Claim
17 words
A reproduction material according to claim 1 in which the reproduction layer comprises a light-sensitive diazo compound.
Claim 5
Dependent Claim
16 words
A reproduction material according to claim 1 in which the reproduction layer comprises a photoconductive compound.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |