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:
Dec. 16, 1986
Filed:
Jun. 04, 1985
Applicant:
Inventors:
Shigenobu Osawa, Kawasaki, JP;
Tamotsu Murakami, Kawasaki, JP;
Takashi Mizuma, Kawasaki, JP;
Katsuhide Sano, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430108 ; 430137 ; 4301066 ;
Abstract
A carrier for use as a component in electrophotographic two-component developers having improved mechanical strength, durability and triboelectric charge characteristics comprising porous magnetite particles coated with a cross linked polymeric film comprising an epoxy resin and a polyamide resin. A two-component electrophotographic developer comprising resin coated porous magnetite carrier particles and toner particles and a method of producing resin coated porous magnetite carrier particles are also disclosed.