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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.:

US 5641600 B1

PDFFull Text
Date of Patent:
Jun. 24, 1997

Filed:

Jul. 31, 1995

Magnetic toner and image forming method

Applicant:
Inventors:

Takaaki Kotaki, Yokohama, JP;

Masaki Uchiyama, Yokohama, JP;

Yasutaka Akashi, Yokohama, JP;

Makoto Unno, Tokyo, JP;

Yushi Mikuriya, Kawasaki, JP;

Tadashi Dojyo, Kawasaki, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

Roland Martin

Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430122 ; 430903 ;
Abstract

A magnetic toner composed of a binder resin and magnetic fine particles, wherein the magnetic fine particles are coated with an iron-zinc oxide on their surfaces and the magnetic fine particles have a saturation magnetization (.sigma.s) of 50 Am.sup.2 /kg or above under a magnetic field of 79.58 kA/m (1K oersted) where the product of residual magnetization (.sigma.r, Am.sup.2 /kg) and coercive force (Hc, kA/m), .sigma.r.times.Hc, is in the range between 60 and 250 (kA.sup.2 m/kg).

Find Patent Forward Citations

Kotaki, Takaaki. (1997). Magnetic toner and image forming method (U.S. Patent No. 5641600). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5641600

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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