Lithographic substrates

Details Lithographic substrates Lithographic substrates

1979-08-24

1980-12-30

Ansher, Harold

Stock material or miscellaneous articles

Composite

Of metal

156665, 204 33, 204 58, 204140, 427309, 427435, 427444, 428908, 430278, 430323, 430327, G03C 194, B41N 302, B41N 304, C25F 304

Patent

active

042424178

ABSTRACT:
A method for the production of aluminum substrates useful in the production of lithographic printing plates which comprises mechanically graining the surface of an aluminum sheet, subsequently finely graining the mechanically grained sheet in a saturated solution of an aluminum salt of a mineral acid to which up to 10% of a mineral acid has been added, with discretional electrolysis, and then optionally anodizing the sheet.

REFERENCES:
patent: 2209712 (1940-07-01), Brennan
patent: 3072546 (1963-01-01), Wruck
patent: 3073765 (1963-01-01), Adams
patent: 3755116 (1973-08-01), Terai et al.
patent: 4086114 (1978-04-01), Karol
patent: 4126483 (1978-11-01), Donakowski et al.
patent: 4152158 (1979-05-01), Chu

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