| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical process of manufacturing a black toner whose chargeability is hardly affected by a change in relative humidity. SOLUTION: The process includes: blending a latex emulsion comprised of resin, water and an ionic surfactant, a colorant dispersion comprised of a colorant, water and an ionic surfactant, and a wax dispersion comprised of wax, water and an ionic surfactant; heating the resulting mixture in the presence of coagulants, one of which is a source of calcium ions, which heating is below about the glass transition temperature (Tg) of the latex resin; and subsequently heating the above about the glass transition temperature (Tg) of the latex resin. COPYRIGHT: (C)2005,JPO&NCIPI
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