To provide an aluminum alloy sheet for a planographic printing plate, which has uniform pits efficiently formed thereon and produces no unetched part when having been subjected to electrochemical surface roughening treatment, and to provide a manufacturing method therefor.
This aluminum alloy sheet includes such an amount of solution Cu as the relationship between the amount of the solution Cu in an Al matrix and a Cu content satisfies ä(amount of solution Cu in Al matrix)/(Cu content)}×100≥75%. Thus manufactured aluminum alloy sheet acquires a balanced potential difference between the Al matrix and an intermetallic compound CuAl
COPYRIGHT: (C)2007,JPO&INPIT
Toshiki Muramatsu
Akio Uesugi
Hirokazu Sawada
FUJIFILM Corporation
| JP8179496A | ||||
| JP200589846A |