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|1. (WO2017150039) LITHOGRAPHIC PRINTING ORIGINAL PLATE AND PLATE MAKING METHOD FOR LITHOGRAPHIC PRINTING PLATES|
|Title:||LITHOGRAPHIC PRINTING ORIGINAL PLATE AND PLATE MAKING METHOD FOR LITHOGRAPHIC PRINTING PLATES|
A lithographic printing original plate which comprises an image recording layer on a supporting body, and wherein the image recording layer contains an infrared absorbent, a polymerization initiator, a polymerizable compound having a hydrogen bonding group, and hard polymer particles that have at least one group selected from the group consisting of a urethane group, a urea group, an imide group, an amide group and a sulfonamide group on the surfaces thereof, with the number average primary particle diameter of the hard polymer particles being 0.01-1 μm; and a plate making method for lithographic printing plates, which uses this lithographic printing original plate.