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:
Mar. 14, 2017
Filed:
Jun. 12, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Makoto Fukatsu, Suntou-gun, JP;
Manami Haraguchi, Yokohama, JP;
Atsushi Nakamoto, Tokyo, JP;
Kazunari Hagiwara, Yokohama, JP;
Tatsuaki Orihara, Tokyo, JP;
Shuhei Tokiwa, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a toner, including a toner particle having a core particle containing a binder resin and a colorant. The toner particle has a protrusion on a surface thereof, and the protrusion contains an olefin-based polymer having a cyclic olefin structure. When an average radius of curvature of the protrusion, an average particle diameter of the core particle, a projected area of the toner particle, and a projected area of the protrusion that are calculated from a planar projected image of an image of the toner particle photographed with a scanning electron microscope are represented by Rs (μm), Rc (μm), S, and S1, respectively, the average radius of curvature Rs of the protrusion is 0.004Rc μm or more and 0.100Rc μm or less, and an average of a surface coverage '100×S1/S' % is 5% or more and 90% or less.