Patent ID: 6632579
Filing Date: 2003-10-14
Classification: G03G

Abstract:
A method for manufacturing a toner for eletrophotography, comprising the steps of:preparing primary particles of the toner prepared by dispersing at least a colorant in a solid resin; adhering a fluidizing agent to the primary particles, wherein when the fluidizing agent is mixed with a carrier coated with a silicone resin and then stirred, the fluidizing agent has a frictional charge which has the same polarity as the polarity of a frictional charge of the primary particles without the fluidizing agent when the primary particles without the fluidizing agent are mixed with the carrier coated with the silicone resin and then stirred; dispersing the primary particles in a liquid, which does not dissolve the resin and which comprises a dispersant, to prepare a dispersion; heating the dispersion; cooling the dispersion; optionally washing the dispersion; and drying the dispersion to prepare the toner, wherein a composition comprising a charge controlling agent is mixed with the primary particles at a time before the heating, during the heating, after the cooling or after the washing of the particles.