| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing method, in which no scumming develops in a printed matter even under severe printing conditions and by which the simplification of a plate-making process and a low cost plate-making process can be realized. SOLUTION: This lithographic printing method includes a process for forming a lithographic printing plate by producing an oleophilic image on a lithographic printing support having a hydrophilic surface, on which a hydrophilic graft polymer chain exists, a process for printing with the lithographic printing plate and a process for erasing the image of the lithographic printing plate after the end of the printing process. A printing is repeated by forming an image again on the lithographic printing support, from which the image has been erased. |
