METHOD FOR PROCESSING PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE, AND DEVICE FOR PROCESSING THE SAME

摘要

PROBLEM TO BE SOLVED: To decrease the amt. of generated sludge of a developer by supplying the developer to an image-exposed surface while transporting a photosensitive planographic printing plate to an approximately horizontal direction in a developing stage at a specific transportation speed. SOLUTION: The photosensitive planographic printing plate (PS plate) 10 is transported at a transportation speed of >=1000mm/min and >=8000mm/min and is subjected to development processing by supplying the developer to the image-exposed surface of the PS plate 10. In such a case, the developer stored in a developing tank 30 is controlled by a heater to a prescribed temp. The developer controlled in temp. is injected and supplied to the image-exposed surface of the PS plate 10 from a shower pipe 32 at the end of a branch pipe 16 through a filter 13, a pump 14, a head chamber 15 and the branch pipe 16 from a circulating path inlet opened in the bottom of the developing tank 30 while the PS plate 10 is transported in a development processing section 3 by an inlet transporting roller 32 and an outlet transporting roller 38, by which the PS plate is subjected to the development processing.