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:
Sep. 19, 2000
Filed:
Aug. 31, 1999
Applicant:
Inventors:
Yutaka Sugizaki, Minamiashigara, JP;
Hirokazu Hamano, Minamiashigara, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430106 ; 430 45 ;
Abstract
A black toner for developing electrostatic latent images having colored particles and external additive(s) and the colored particles containing at least a binder resin, carbon black, a cyan pigment, a magenta pigment, and a yellow pigment. The concentration (C.sub.CB weight %) of carbon black, the concentration (C.sub.C weight %) of the cyan pigment, the concentration (C.sub.M weight %) of the magenta pigment, and the concentration (C.sub.Y weight %) of the yellow pigment in the colored particles preferably satisfy the following relationship (1);