Title:
PROCESS FOR PRODUCING ALUMINUM SUPPORT FOR MATERIAL FOR LITHOGRAPHIC PRINTING PLATE, ALUMINUM SUPPORT FOR MATERIAL FOR LITHOGRAPHIC PRINTING PLATE, AND MATERIAL FOR LITHOGRAPHIC PRINTING PLATE
Document Type and Number:
WIPO Patent Application WO/2006/082688
Kind Code:
A1
Abstract:
This invention provides a material for a lithographic printing plate, which is excellent in printing durability, blanket fouling preventive properties, and properties for preventing fouling after standing, an aluminum support for the lithographic printing plate material, and a process for producing an aluminum support for a lithographic printing plate material. An aluminum support is subjected to AC electrolytic surface roughening treatment, in which AC electrolysis is carried out in an electrolytic solution composed mainly of hydrochloric acid under conditions of current density 35 A/dm2 to 150 A/dm2 and an energization amount 600 A·sec/dm2 to 1500 A·sec/dm2, etching treatment, in which the dissolution amount of the aluminum plate is 3 to 5 g/m2, AC eletrolytic surface roughening treatment in which AC electolysis is carried out under conditions of current density 15 to 30 A/dm2 and energization amount 100 to 400 A·sec/dm2, treatment, in which smut is removed in an acidic solution composed mainly of phosphoric acid in such a manner that the amount of smut remaining undissolved is 0.05 to 0.3 g/m2, and anodic oxidation in that order to form a roughened surface.
Inventors:
TAKAGI HIROSHI (JP)
Application Number:
PCT/JP2005/023119
Publication Date:
August 10, 2006
Filing Date:
December 16, 2005
Export Citation:
Assignee:
KONICA MINOLTA MED & GRAPHIC (JP)
TAKAGI HIROSHI (JP)
TAKAGI HIROSHI (JP)
International Classes:
B41N3/03; G03F7/09
Foreign References:
| JP2005028867A | 2005-02-03 | |||
| JP2002283752A | 2002-10-03 |
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