The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 1997
Filed:
Nov. 06, 1996
Applicant:
Inventors:
Assignee:
KAO Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ; 430903 ;
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.