Aluminum alloy substrate for electrolytically grainable lithogra

Details Aluminum alloy substrate for electrolytically grainable lithogra Aluminum alloy substrate for electrolytically grainable lithogra

1994-12-07

1996-10-08

Simmons, David A.

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148551, 148552, 148695, 148696, C22F 104

Patent

active

055627846

ABSTRACT:
An aluminum alloy substrate for an electrolytically grainable lithographic printing plate, consisting of an aluminum alloy cold-rolled sheet, produced by a continuous casting and rolling process, comprising 0.20 to 0.80 wt % of Fe with the balance consisting of aluminum, grain refining elements, and unavoidable impurities including 0.3 wt % or less of Si and 0.05 wt % or less of Cu, grains in a surface layer portion having a width of not more than 150 .mu.m in a direction parallel to the sheet surface and normal to the direction of cold rolling and a length, in a direction parallel to the direction of cold rolling, of not more than 8 times the width.

REFERENCES:
patent: 4939044 (1990-07-01), Ohashi et al.
patent: 5350010 (1994-09-01), Sawada et al.
Patent Abstract of Japan, vol. 17, No. 544 (C-1118) 60CT93 & JP A 5-156414 (Fuji Photo Film Co., Ltd.) 22 Jun. 1993.
Metals Handbook, 10th Edition, vol. 2, 1990, American Society for Metals, Metals Park, Ohio, US (Alloy and Temper Designation Systems for Aluminum and Aluminum Alloy, pp. 15-17, table 2).

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