Light-sensitive lithographic printing plate utilizing o-quinone diazide light-sensitive layer containing cyclic clathrate compound
AssigneesKonica Corporation, Mitsubishi Chemical Corporation
InventorsKatuhiko Higashino, Kaori Fukumuro, Shinichi Matsubara, Mitsuru Sasaki, Katsuko Ohta, Fumiyuki Matsuo
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Abstract
Disclosed are a light-sensitive lithographic printing plate which comprises a support subjected to graining treatment and anodization treatment and a layer of a positive light-sensitive composition containing a o-quinonediazide compound, an alkali-soluble resin and a clathrate compound provided on the support, and a method of processing the same which comprises subjecting the plate to image exposure and then development processing with a developing agent containing an alkali metal silicate.
Claims11
In a light-sensitive lithographic printing plate which comprises a support subjected to graining treatment and anodization treatment and a layer of a positive light-sensitive composition containing an o-quinonediazide compound and an alkali-soluble resin provided on the support, the improvement wherein said layer of a positive light-sensitive composition comprises a cyclic clathrate compound which can include water or an organic molecule, said clathrate compound being contained in an amount of 0.01 to 10% by weight of said positive light-sensitive composition.
Dependencies are inferred from the claim text.