| 摘要 |
PROBLEM TO BE SOLVED: To provide an original plate for direct drawing type lithographic printing, which is capable of printing a multitude of sheets of printed matter with a distinct image. SOLUTION: A waterproof substrate of the original plate for the direct drawing type lithographic printing, which is provided on the waterproof substrate with at least an image receiving layer, is manufactured employing a polymer film or a composite film having a thermal expansion coefficient of not more than 15×10<-5> / deg.C and a thermal contraction coefficient ( heating 30 min at 150 deg.C) of not less than -1.0 and not more than +1.0.
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