PROCESSING METHOD FOR PLANOGRAPHIC PRINTING PLATE

摘要

PURPOSE:To uniformize processing and to simultaneously shorten the time for processing by processing the above printing plate with a compsn. contg. an acetylene glycol compd. CONSTITUTION:The printing plate is processed by the compsn. contg. the compd. in which two pieces of the carbons adjacent to the triple bonds of alkine have respectively one piece of hydroxyl group, i.e. the acetylene glycol compd. The acetylene glycol is expressed by fromula I. In the formula I, R1 preferable denotes a methyl group; R2 preferably denotes up to 4C alkyl group. The ease of foaming of a converting liquid is lessened in this way and the processing with the excellent uniformity of processing and uniform ink receptivity is possible.