METHOD FOR PREPARING DISPERSION, DISPERSION, METHOD FOR MANUFACTURING TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT AND TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT

摘要

PPROBLEM TO BE SOLVED: To suppress occurrence of coarse particles such as undispersed matter and reaggregated matter and to efficiently prepare a dispersion. PSOLUTION: In a method for preparing such a dispersion by dispersing in a dispersion medium a compound which has a smaller density than the dispersion medium and is solid at ordinary temperature, the number of agitation revolutions during dispersion and that during cooling are set to a predetermined value each in order that the occurrence of undispersed matter and reaggregated matter of a release agent or the like is to be suppressed and the objective dispersion such as a release agent dispersion can be efficiently prepared. By using the dispersion, a toner for electrostatic image development excellent in transferability, charging property and fluidity can be manufactured. PCOPYRIGHT: (C)2008,JPO&INPIT