Process for producing aluminum support for printing plate

Details Process for producing aluminum support for printing plate Process for producing aluminum support for printing plate

C - Chemistry, Metallurgy

25

F

204/86.5

C25F 3/04 (2006.01) B41N 3/03 (2006.01)

Patent

CA 1328241

ABSTRACT OF THE DISCLOSURE A process for producing an aluminum support for printing plate, which involves electrochemical graining of the support, is disclosed. The support is passed through an acidic electrolyte of an electrolytic cell along a path of travel maintained a distance above alternatingly distributed anodes and cathodes in a face-to-face relationship with the aluminum-containing support. Simultaneously, there is applied a d-c voltage between the alternating anodes and cathodes to produce an electrochemically roughened support. The electrochemically roughened supports produced in accordance with the invention have a grained structure characterized by a uniform and dense distribution of high depth-to-diameter ratio pits and exhibit satisfactory print quality and running characteristics without causing any unevenness.

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