Lithographic printing plates

Details Lithographic printing plates Lithographic printing plates

1982-02-17

1983-08-02

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 42, 204 58, 101459, C25D 1112, C25D 1108, C25D 1118

Patent

active

043964702

ABSTRACT:
Aluminium sheets for lithographic printing plate production are anodized firstly in a phosphoric acid electrolyte and secondly in an electrolyte containing a major amount of phosphoric acid and a minor amount of sulphuric acid.

REFERENCES:
patent: 3808000 (1974-04-01), Magnotta et al.
patent: 3834998 (1974-09-01), Watanabe et al.
patent: 3929591 (1976-12-01), Chu et al.
patent: 3940321 (1976-02-01), Adams
patent: 4049504 (1977-09-01), Chu et al.
patent: 4188270 (1980-02-01), Kataoka
patent: 4229266 (1980-10-01), Usbeck

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