| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain toner matrix particles for developing an electrostatic charge image having clear satisfactory color reproducibility and color forming property while solving problems of existing methods when a full-color image is formed using a full-color copying machine or printer, and to obtain a toner using the toner matrix particles and a developer. SOLUTION: A mixture of at least an org. pigment (A), a water-soluble inorg. salt (B), a water-soluble solvent (C) and rosin (D) is mechanically kneaded to finely divide the org. pigment A. The inorg. salt B and the solvent C are removed by washing, an aq. paste (D) of the resultant treated pigment and a resin (E) which is solid at ordinary temp. are heated and kneaded and the water is removed. The resultant resin coated pigment (F) and a finder resin (G) are heated and kneaded to obtain the objective toner matrix particles for developing an electrostatic charge image.</p> |
