Support for a planographic printing plate and method for produci

Details Support for a planographic printing plate and method for produci Support for a planographic printing plate and method for produci

1995-04-03

1996-08-20

Simmons, David A.

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148552, 148692, 148696, 148437, 148439, 205214, C22F 104

Patent

active

055475221

ABSTRACT:
A support for a planographic printing plate support in which variations in the quality of the material of the aluminum support are reduced to thereby improve the yield in an electrolytic graining treatment and which is excellent in susceptibility to graining, has no stripe irregularities, and excellent appearance, and a method for producing such a planographic printing plate. An aluminum plate material is formed through a twin-roller continuous casting apparatus and subjected to cold rolling. Successively, the plate is subjected to heat treatment so as to form a surface portion of a depth of at least 15 .mu.m in the thickness direction having no recrystallization in the surface layer. If necessary, the plate may be subjected to cold rolling again as final rolling. Thereafter, the plate is subjected to correction.

REFERENCES:
patent: 5078805 (1992-01-01), Uesugi et al.
Metals Handbook (9th Edition); vol. 4, Heat Treating, pp. 707-710; ASM, Metal Park, Ohio; 1981.

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