LASER-ENGRAVED PRINTING ORIGINAL PLATE

摘要

PROBLEM TO BE SOLVED: To provide a flexographic original plate from which the residue can easily be removed and which has an excellent shape of an engraved relief, a small tack on a printing surface and a high carving speed by suppressing the generation of a residue when a relief image is created by directly engraving with laser. SOLUTION: This printing original plate capable of being engraved with laser is composed of a photo-curable material of a photosensitive resin composition containing an inorganic porous particles. When the original plate is subjected to a thermogravimetric analysis (TGA) by heating at a heating rate of 10°C/min in a nitrogen atmosphere, the weight reduction ratio of 50% appears in the range of≥150°C and≤400°C. COPYRIGHT: (C)2004,JPO