ALUMINUM LITHOGRAPHIC PRINTING PLATE AND MANUFACTURE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a lithographic printing plate with which stains do not generate around a printed matter. SOLUTION: At least on end faces of opposite two sides of a lithographic printing plate having a hydrophilic layer 2 on at least one surface of an aluminum support body 1, an angular part to be formed of a surface and an end face having the hydrophilic layer 2 is formed of a protruded curved face having no bent part. A part of the protruded curved face is covered with the hydrophilic layer 2. A vertical distance of the end part of the hydrophilic layer and a flat surface 3 of the hydrophilic layer is 10-60μm.