バイオレットレーザー対応高感度光重合開始系及びそのフォトポリマーCTPへの応用

抄録

A highly sensitive photopolymerization system by using violet laser (405nm) was investigated. The photopolymerization composition which contains an initiator and a high fluorescent dye shows efficient sensitization of the system. The photosensitization mechanism seems to be a singlet energy transfer process. The higher photosensitization efficiency based on a repression of thermal relaxation from the excitation state was obtained from newly designed dye material. The photopolymerization system was applied to the computer to plate (CTP) technology, a digital printing plate, to develop Fuji Film i-Presso P-NV for the violet laser. This CTP plate system reveals the advantages of high productivity on plate making and also handling under a brighter safelight compared to a current first generation system using a conventional FD-YAG laser (532nm).