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:
Feb. 01, 2000
Filed:
Mar. 20, 1998
Applicant:
Inventors:
Yoshiaki Iwasaki, Toyonaka, JP;
Koshiro Nakao, Nishinomiya, JP;
Hiroshi Nakamura, Kobe, JP;
Shigeyuki Hakumoto, Toyonaka, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430106 ; 430137 ;
Abstract
A method of producing a color toner whereby a binder resin, a chromatic coloring material and a metal oxide particulate material are mixed to obtain a first mixture. Thereafter, a second mixture is obtained by mixing the first mixture with a material other than the materials used to obtain the first mixture. The second mixture is melted, kneaded, cooled and pulverized.