| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magenta colorant having such a characteristic that heat stability of the colorant comprising a metal compound with which a chromogen is associated is more excellent than that of the chromogen not associated with a metal. <P>SOLUTION: A phase change ink composition contains a phase change ink carrier and a colorant compound of formula a [M is (1) a metal ion which has a positive charge of +y (y is an integer of at least 2) and forms the compound with at least two chromogen parts of formula b or (2) a metal-containing part which forms the compound with at least two chromogen parts of formula c; z is an integer expressing a number of the chromogen parts of formula d associated with the metal and is at least 2; and R<SB>1</SB>, R<SB>2</SB>, R<SB>3</SB>, R<SB>4</SB>, R<SB>5</SB>, R<SB>6</SB>, R<SB>7</SB>, a, b, c, d, Y, Q<SP>-</SP>, A, and CA are each defined in the specification]. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
