| 摘要 |
<p>PURPOSE:To provide the title ink which is reacted and cured by actinic radiations, such as ultraviolet radiation, and is free from greasing in printing operation, and which comprises a compd. having an ethylenically unsatd. double bond and, added thereto, an organopolysiloxane. CONSTITUTION:An organopolysiloxane (e.g., one which is commercially available as silicone oil) is added in an amt. of 0.1-10wt.% to an actinic radiation curable ink for dry lithography which comprises a compd. having an ethylenically unsatd. double bond [e.g., ethylene glycol di(meth)acrylate] and optionally a photopolymn. initiator. The apparent tack reduction effect by the organopolysiloxane is esp. remarkable. The ink is free from a problem of brin separation, and the effect that the ink adhesion energy to a noncohesive layer forming nonimage areas in a printing plate is small is larger than that of the conventional oil-contg., ink for dry lithography, thereby ensuring remarkable improvement in greasing resistance.</p> |
