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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 4952476 B1

PDFFull Text
Date of Patent:
Aug. 28, 1990

Filed:

Feb. 22, 1989

Electrophotographic magnetic toner containing polyalkylene and vinyl

Applicant:
Inventors:

Kiichiro Sakashita, Inagi, JP;

Toshiaki Nakahara, Tokyo, JP;

Hirohide Tanikawa, Yokohama, JP;

Satoshi Yoshida, Kawasaki, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

J David Welsh

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

A magnetic toner comprising a binder resin, magnetic powder and 0.1-10 wt. % (based on resin component) of a low-molecular weight polyalkylene, the binder resin comprising a vinyl-type polymer having 5 to 80 wt. % of a tetrahydrofuran (THF)-insoluble; the magnetic toner having a melt index of 0.2 to 12 g/10 min. (125.degree. C., 10 kg load); the residual magnetization .sigma..sub.r and the volume-average particle size d of the magnetic toner satisfying the following formula:

Find Patent Forward Citations

Sakashita, Kiichiro. (1990). Electrophotographic magnetic toner containing polyalkylene and vinyl (U.S. Patent No. 4952476). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4952476

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

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