| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-speed composition which can be photopolymerized by absorption of light within the wavelength range from 300 to 450 nm and is capable of manufacturing an imaging material which can be exposed with a low-cost laser operated within the above wavelength range, such as a printing plate precursor or a photoresistive material. <P>SOLUTION: The composition comprises a binder, a polymerizable compound, a sensitizer and a photoinitiator, wherein the sensitizer is an optical whitener. High speed is attained and production of a planographic photopolymer plate using a low-cost blue or purple laser diode is enabled. <P>COPYRIGHT: (C)2004,JPO |
