| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate-making system, by which the rationalization and saving of resources in manufacturing are contrived by a method wherein a digital image is formed on a coated photosensitive resin layer directly from digital image data. SOLUTION: The manufacturing method of a seamless cylinder printing plate consists of a coating process 1 for coating a photosensitive resin liquid having a certain thickness on the outer peripheral surface of the cylinder, a dividing process 2 for dividing the image forming region on the coated photosensitive resin layer into an aggregate of block squares of a checkerboard arranged in a two-dimensional matrix and for further dividing the one block square minutely into minute regions in squares of a checkerboard, a process 3 for forming a digital image by repeating digital block exposure, digital block exposure which is performed by selectively irradiating the minute region by actinic rays of light with a digital exposing means traveling rectilinearly on the basis of image recording signals prepared in advance, by the number, which is the total number of the blocks, of times and a process 4 for further repeating the process 1 to 3 on the photosensitive resin layer, on which the image is formed, and a process 5 for removing uncured resin from the photosensitive resin layer. |
