| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a positively chargeable toner that exhibits good charge rising performance and can secure sufficient chargeability to reduce foggings. SOLUTION: The method for producing a positively chargeable toner includes the processes of: mixing and emulsifying a charge-control resin having a positive polar group, an organic solvent and an aqueous medium to form an emulsion, and then removing the organic solvent from the emulsion, thereby forming a suspension of the charge-control resin having a positive polar group in the range of 5.0×10<SP>-5</SP>to 6.0×10<SP>-4</SP>mol/g; mixing the suspension of the charge-control agent with a suspension of toner base particles containing a binder resin and a colorant; and heating the mixture containing the suspension of the toner base particles and the suspension of the charge-control resin to fix the charge-control resin on the surfaces of the toner base particles. COPYRIGHT: (C)2008,JPO&INPIT
|
