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:
May. 15, 2018
Filed:
Sep. 20, 2016
Tsuyoshi Nozaki, Osaka, JP;
Yoshimichi Ishikawa, Hyogo, JP;
Tomoharu Miki, Osaka, JP;
Yuta Takeuchi, Hyogo, JP;
Tsuyoshi Nozaki, Osaka, JP;
Yoshimichi Ishikawa, Hyogo, JP;
Tomoharu Miki, Osaka, JP;
Yuta Takeuchi, Hyogo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner is provided. The toner includes toner particles each including a binder resin and a release agent. From 20% to 80% by number of the toner particles satisfy the following formula (1) and (2):2/3≤≤1.5  (1)1/3≤≤1.0  (2)wherein Dv represents a volume average particle diameter of the toner particles; and T and R represent the longest cross-sectional diameters of each toner particle and the release agent contained therein, respectively, measured by observing cross-sections of the toner particles with scanning transmission electron microscope.