PRODUCTION OF PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a process for producing a printing plate which improves a vacuum tight adhesion property and the adhesiveness to a photosensitive layer and prevents the contamination of a roll in contact therewith. SOLUTION: The cooling roll 4C is brought into contact with the surface of the photosensitive planographic printing plate 1 formed by uniformly dispersing and adhering thermally fusible fine powder having 0.5 to 50μdiameters in the specified direction on the surface at 5 to 80 pieces per 1mm<2> in the state of the surface temp. of the photosensitive planographic printing plate higher than the temp. after 20 deg.C is subtracted from the softening point of the fine powder to cool and press bond the fine powder, by which the thermally fusible fine powder is fused onto the photosensitive planographic printing plate.