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. 04, 2021
Filed:
Dec. 27, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Koji Nishikawa, Susono, JP;
Yojiro Hotta, Mishima, JP;
Yasuhiro Hashimoto, Mishima, JP;
Takaaki Furui, Tokyo, JP;
Shotaro Nomura, Suntou-gun, JP;
Yuujirou Nagashima, Susono, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Toner comprising a toner particle containing binder resin and colorant, wherein fine particles A (organosilicon polymer particles containing an organosilicon polymer) and fine particles B are present at the toner particle surface, the organosilicon polymer has structure in which Si and O are alternately bonded to each other, portion of Si in the organosilicon polymer has R—SiOstructure, and content of the fine particles A, proportion for area of peak originating with silicon having the structure, volume resistivity of the fine particles B, total coverage ratio of the toner particle surface by the fine particles A embedded in the toner particle (A1) and the fine particles A not embedded in the toner particle (A2), percentage for area occupied by the fine particles A2, content of the fine particles B in the toner, and percentage for area occupied by the fine particles B embedded in the toner particle are prescribed range.