| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing toner having excellent chargeability and capable of suppressing decrease in the chargeability even when the toner or base particles are exposed to a high-temperature and high-humidity atmosphere. SOLUTION: The method of manufacturing toner includes steps of: preparing a first liquid by dissolving or dispersing a toner material containing a binder resin and/or a precursor of the binder resin in an organic solvent; preparing a second liquid by dispersing the first liquid in an aqueous medium containing a dispersant; producing particles by removing the organic solvent from the second liquid; washing the particles; preparing a third liquid by dispersing the washed particles in an aqueous medium and heating the second aqueous medium while or after dispersing the washed particles therein; and producing base particles by adding a charge controlling agent to the third liquid. The ratio of the BET specific surface area of the base particles after stored in an environment at 40°C and 70%RH for two weeks to the BET specific surface area of particles included in the third liquid is 0.60 or more and 1.00 or less. COPYRIGHT: (C)2011,JPO&INPIT |
