| 摘要 |
PROBLEM TO BE SOLVED: To provide a process for producing toner particles by granulation carried out in an aqueous medium, in which the toner particles have a sharp particle size distribution and can achieve a high image density. SOLUTION: In the process for producing the toner particles to be obtained by granulating a colorant composition containing at least a colorant in the aqueous medium, the apparatus which forms the toner particles by granulation has a granulation tank 3 and a stirrer 4, and, the granulation is performed, where the internal volume of the granulation tank is represented by A (L) and the volume of an air layer portion in the interior of the granulation tank by B (L), the air layer portion proportion B/A satisfies the following expression 0.05≥B/A (1). COPYRIGHT: (C)2006,JPO&NCIPI
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