Positively chargeable toner for nonmagnetic one-component developing method
AssigneeKao Corporation
InventorsShin-ichi Sata, Jun Shimizu, Masayuki Maruta
Life of this patent
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Abstract
The positively chargeable toner used for a nonmagnetic one-component developing method includes a toner particle and fine polytetrafluoroethylene particles, the toner particle having (a) a binder resin having a polyester resin having an acid value of 10 mg KOH/g or less; (b) a colorant; and (c) a charge control agent, and the fine polytetrafluoroethylene particles, whose average primary particle size is at least 0.05 .mu.m and less than 0.5 .mu.m, being externally added to the surface of the toner particle. The nonmagnetic one-component developing method includes the step of loading the above positively chargeable toner in a developer device for a nonmagnetic one-component toner.
Claims10
A positively chargeable toner used for a nonmagnetic one-component developing method, comprising a toner particle and fine polytetrafluoroethylene particles, said toner particle comprising:
- (a) a binder resin comprising a polyester resin having an acid value of 10 mg KOH/g or less;
- (b) a colorant;
- and
- (c) a charge control agent, and said fine polytetrafluoroethylene particles, whose average primary particle size is at least 0.05 .mu.m and less than 0.5 .mu.m, being adhered to the surface of said toner particle.
Dependencies are inferred from the claim text.