Patent ID: 6575094
Filing Date: 2003-06-10
Classification: B24B,B24D,B41N,Y10T

Abstract:
A lithographic printing plate support comprising:a surface which is subjected to a mechanical surface roughening treatment and an anodizing treatment, wherein a surface roughness Ra is from 0.3 to 1.0 &mgr;m, a maximum roughness Rmax is 10 &mgr;m or less, a number Pc of roughness protrusions is 15 to 35 protrusions per mm for protrusions having a protrusion height which is greater than a set value +0.3 &mgr;m and an indentation depth which is deeper than the set value âˆ’0.3 &mgr;m, and a number Pc of roughness protrusions is 7 to 25 protrusions per mm for protrusions having a protrusion height which is greater than the set value +0.6 &mgr;m and an indentation depth which is deeper than the set value âˆ’0.6 &mgr;m, and the number Pc of roughness protusions is 2 to 18 protrusions per mm for protrusions having a protrusion height which is greater than the set value +1.0 &mgr;m and an indentation depth which is deeper than the set value âˆ’1.0 &mgr;m.