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 8765346 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 01, 2014

Filed:

Apr. 15, 2013
Applicant:

Kyocera Document Solutions Inc., Osaka, JP;

Inventors:

Takanori Tanaka, Osaka, JP;

Hiroki Uemura, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/083 (2006.01);
U.S. Cl.
CPC ...
Abstract

A magnetic single-component developer includes a spherical toner containing at least a magnetic powder and not containing a release agent in a binder resin, and a nonspherical toner containing at least a magnetic powder and a release agent in a binder resin. According to measurements taken from a scanning electron microscope image taken from 100 toner particles in the magnetic single-component developer, the spherical toner has a circularity of 0.980 or more, the nonspherical toner has a circularity of 0.960 or less, and a particle number ratio (A)/(B) of the number (A) of particles of the spherical toner to the number (B) of particles of the nonspherical toner is 3/7 or more and 5/5 or less.


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Tanaka, Takanori. (2014). Magnetic single-component developer (U.S. Patent No. 8765346). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8765346

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