| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of heat-melt between a heating unit such as a thermal head and a film, and restrain the generation of noise, and printing from becoming unclear by the use of a graft copolymer containing a polysiloxane group consisting of a specific ester compound, or an ether compound and a specific monomer. SOLUTION: A stencil thermosensitive sheet is formed in use of a graft copolymer containing a polysiloxane consisting of an ester compound or an ester compound, and a monomer expressed by formula I and formula II. An ester compound used is a monomer containing an alcoxycarbonyl group obtained from a secondary, tertiary alcohol, an alkyloxymethoxy carbonyl group, or the like. Also, used for such an ester compound is a monomer containing an alkyloxymethoxy group, alkylthiomethoxy group, or the like. In the formula, R1 is a hydrogen atom or a methyl group, R2 is a methyl group, and ethyl group, or the like, R3 is a hydrogen atom, a phenyl group, or the like, and R4 is a methyl group, an ethyl group, or the like.
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