| 摘要 |
<p>Light sensitive compsn. for prodn. of negatively-operating copying materials consists of (1) a soln. of an organo-soluble light sensitive diazonium resin salt (I) derived from (a) a light sensitive diazo resin that is practically insoluble in org. solvents, and (b) a complex halogenated inorg. acid, and (2) a water insoluble, oleophilic, film-forming resin (II) in an org. solvent (III). Gives printing plates that can be developed with aqs. compsns. Requires the use of only one org. solvent (III), thus facilitating prepn. Gives high quality printing plates.</p> |
