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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 4543312 B1

PDFFull Text
Date of Patent:
Sep. 24, 1985

Filed:

Apr. 26, 1983

Magnetic toner comprising magnetic powders having controlled size

Applicant:
Inventors:

Kazunori Murakawa, Tokyo, JP;

Yasuo Mitsuhashi, Yokohama, JP;

Hitoshi Uchide, Yokohama, JP;

Seiichi Takagi, Tokyo, JP;

Masaki Uchiyama, Tokyo, JP;

Hisayuki Ochi, Tokyo, JP;

Motoo Urawa, Funabashi, JP;

Eiichi Imai, Narashino, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

John E Kittle

Assistant Examiner:

Mukund J Shah

Int. Cl.
CPC ...
G03C / ; C03G / ;
U.S. Cl.
CPC ...
430107 ; 106304 ; 252 6251 ; 252 6254 ; 252 6256 ; 4301066 ; 430111 ; 430633 ; 430634 ; 430903 ;
Abstract

A magnetic toner comprises magnetic powders having a particle distribution that the particle size of 50% accumulated volume, the particle size of 25% accumulated volume and the particle size of 75% accumulated volume of the magnetic powders are 1.5-4.5.mu., 1.0-4.0.mu. and 2.5-6.0.mu., respectively. This magnetic toner can produce high density and clear images and further, can produce colorful images.

Find Patent Forward Citations

Murakawa, Kazunori. (1985). Magnetic toner comprising magnetic powders having controlled size (U.S. Patent No. 4543312). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4543312

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

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