ORIGINAL PLATE FOR WATERLESS PLANOGRAPHIC PRINTING

PURPOSE:To obtain the original plate which has a high sensitivity, is not affected by oxygen and has the sufficient adhesion between a silicone rubber layer and a photosensitive layer and excellent printing durability by using a high-polymer compd. contg. a specific structure and a photosensitive re...

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Bibliographische Detailangaben
Hauptverfasser: ISONO YUKIKO, MORI YOICHI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE:To obtain the original plate which has a high sensitivity, is not affected by oxygen and has the sufficient adhesion between a silicone rubber layer and a photosensitive layer and excellent printing durability by using a high-polymer compd. contg. a specific structure and a photosensitive resin compsn. contg. a compd. which generates an acid by photoirradiation to form the photosensitive layer. CONSTITUTION:The high-polymer compd. contg. the structure expressed by formula in the side chain is used for the photosensitive layer. For example, polyester, polyether, etc., are used as the structure of the main chain. The compd. having the high affinity to the silicone rubber which is an ink repulsion layer is bonded. For example, a diazonium salt is used as the compd. which generates the acid by photoirradiation. The amt. of the compd. which generates the acid by photoirradiation to be added is specified to 0.1 to 20wt.% of the solid content of the high-polymer compd. contg. the structure of the formula. The silicone rubber formed by converting linear polysiloxane having several thousands to several tens thousand mol. wt. to rubber by crosslinking is used as the silicone rubber used for the ink repulsion layer, by which the excellent original plate is obtd.