| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pigment which improves the colorability in the coupling reaction and exhibits good absorption characteristics of a formed pigment, and a heat-sensitive recording material utilizing the coloring mechanism of the pigment. <P>SOLUTION: This pigment is composed of a coupler and a benzene diazonium salt compound and in this pigment, the coupler is represented by formula (1), and preferably the diazonium salt compound is represented by formula (2). <P>COPYRIGHT: (C)2004,JPO&NCIPI |
