| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat-sensitive transfer ink sheet which satisfies both of transfer property at the time of a high speed transfer, and shelf life of pigments. <P>SOLUTION: A cellulose derivative having a polymerization unit represented by general formula (1) is used as a resin binder for a dye layer. In the formula, R<SP>2</SP>, R<SP>3</SP>and R<SP>6</SP>represent a hydrogen atom, an aliphatic group or an aliphatic carbamoyl group, and the formula satisfies the relation: DS<SB>B</SB>≥DS<SB>C</SB>≥0.1, and satisfies the relation: 0≤DS<SB>A</SB>≤1.2, wherein DS<SB>A</SB>, DS<SB>B</SB>, and DS<SB>C</SB>represent the quantity of the hydrogen atom, the quantity of the aliphatic group, and the quantity of the aliphatic carbamoyl group which exist in the unit as R<SP>2</SP>, R<SP>3</SP>and R<SP>6</SP>in order. <P>COPYRIGHT: (C)2010,JPO&INPIT |
