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. 04, 1997
Filed:
Oct. 04, 1994
Applicant:
Inventors:
Koso Aoki, Hiroshima, JP;
Hiromitsu Misawa, Hatsukaichi, JP;
Yoji Okano, Hiroshima, JP;
Minoru Kozawa, Higashihiroshima, JP;
Naoki Uchida, Ohtake, JP;
Kazuo Fujioka, Hiroshima, JP;
Assignee:
Toda Kogyo Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428403 ; 252 6259 ; 428404 ; 4286 / ; 428701 ; 428702 ; 428900 ;
Abstract
Magnetic toner particles composed of magnetite core particles containing 0.10 to 1.00 wt % silicon and a hydrous coprecipiate of silica and alumina deposited or adhered on the surfaces of the magnetite core particles. The magnetic toner particles have an area-average diameter of 0.05 to 1.0 .mu.m.