| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a phase change ink composition which contains stable pigment particles uniformly dispersed and is thermally stable. <P>SOLUTION: The phase change ink composition comprises a phase change ink carrier and pigment particles, where the carrier comprises at least one nonpolar component and at least one polar component. The manufacturing method thereof comprises a step for selecting at least one polar carrier component functioning as a dispersant of the pigment particles, a step for mixing the pigment particles with the dispersant, a step for forming a pigment dispersion by extruding from an extruder the mixture of the pigment particles with the dispersant at a temperature equal to or higher than the peak crystallization temperature of the dispersant and lower than the peak melting temperature of the dispersant, and a step, subsequent to extrusion of the pigment dispersion, for adding any remaining polar components and nonpolar components to the pigment dispersion, and a step for subjecting the resulting mixture of the pigment dispersion, the polar components and the nonpolar components to high-shear mixing to form an ink. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
