abstract |
(57) [Summary] [PROBLEMS] To provide a lithographic printing method capable of coping with digital image data and printing a large number of inexpensive, high-speed, clear images on a printed sheet. A lithographic printing method for forming an image directly on a plate material mounted on a plate cylinder of a printing press based on a signal of image data, creating a printing plate, and then performing lithographic printing. A lithographic printing method using an electrostatic method to discharge oil-based ink using an electrostatic field. |