Method for preparing substrate for lithographic printing plates,

Details Method for preparing substrate for lithographic printing plates, Method for preparing substrate for lithographic printing plates,

1991-08-15

1994-02-01

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating predominantly single metal or alloy substrate of...

205188, 205201, 205213, 205921, C25D 1116

Patent

active

052829529

ABSTRACT:
A method for preparing a substrate for lithographic printing plates comprises the steps of forming a hydrated oxide layer on the surface of an aluminum plate and then anodizing the plate in a sulfuric acid electrolyte; a lithographic printing plate comprises the substrate; and the substrate per se prepared by the method is also disclosed herein.
The presensitized plate for use in making lithographic printing plates which comprises the substrate has very high sensitivity which makes the presensitized plate applicable to new exposure methods and is capable of being developed with a developer of an aqueous solution system. The light-sensitive layer and the substrate of the presensitized plate are strongly adhered to one another and, therefore, the resulting lithographic printing plate has excellent printing durability and good printability.

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patent: 4686021 (1987-08-01), Nakanishi et al.
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63-62795 Mar. 1988 Japanese Patent Abstract.
JP51063703 Jun. 1976 Japanese Patent Abstract.
63-57796 Mar. 1988 Japanese Patent Abstract.
58-108195 Jun. 1983 Japanese Patent Abstract.
80013918 Apr. 1980 Japanese Patent Abstract.

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