| 摘要 |
<p>PURPOSE:To lessen the flocculation of external additives on toner surfaces and to uniformly disperse the external additives on the toner surfaces. CONSTITUTION:This process for production consists of a stage for producing a premixture of the external additives formed by mixing the first external additives having 0.1 to 0.5mum average particle sizes based on the number of the primary particles and the second hydrophobic external additives having <=20nm average particles based on the number of the primary particles in a 100:5 to 100:20 range by weight, a stage for producing toner precursors by mixing the premixture composed of the external additives and toner particles at 100:0.3 to 100:3 ratios by weight and a stage for mixing the toner precursors and the second hydrophobic external additives at 100:0.1 to 100:1 ratios by weight.</p> |
