Method of manufacturing a lithographic printing plate support, a photosensitive lithographic printing plate using the lithographic printing plate support and the support obtained by the manufacturing method thereof

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for a lithographic printing block substrate in which the uniformity of forming grain pits is provided, the formation of bulky pits is controlled, dot grains in the high minuteness (600 lines) and the generation of damages to a ball point pen are improved and also provide a photosensitive lithographic printing block using the substrate. ;SOLUTION: In the whole of an electrolysis process, a plurality of sections in which the progress of electrolysis is fast and sections in which the progress of electrolysis is slow or stopped are repeated alternately when aluminum or aluminum alloy plate webs are electrolyzed continuously while being carried in an acidic electrolyte. The amount of power in the electrolysis in one process of first electrolysis section is average 100C/dm² or less.;COPYRIGHT: (C)1998,JPO