| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lithographic printing plate which causes little contamination such as initial contamination, contamination of a blanket and contamination when the operation is stopped. SOLUTION: This photosensitive lithographic printing plate is produced by forming a photosensitive layer on a metal supporting body which is produced in at least processes of roughening and anodic oxidation. The gloss of the metal supporting body when the photosensitive layer is removed with acetone to expose the surface to air satisfies formula I and formula II. I: A85/A60=8 to 12 II: B85/B60=8 to 12 In the formulae, A and B are the glossiness of the metal supporting body when light enters in the parallel and perpendicular directions to the rolling direction of the metal supporting body, respectively, and suffixes 85, 60 represent the incident angles of the respective light. |
