| 摘要 |
PROBLEM TO BE SOLVED: To provide the printing processing method of a planographic printing plate surely preventing edge stains without the need of a long time and much labor. SOLUTION: After the planographic printing plate is developed and before ink is attached, the vicinity of the edge part of the planographic printing plate is made hydrophilic. Since the ink is not attached to the vicinity of the edge part of the planographic printing plate, the edge stains are not generated. Since the need of shaving off the supporting body of the planographic printing plate is eliminated, a long time and much labor are not required. |
