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:
Feb. 20, 2018
Filed:
Jan. 31, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yojiro Hotta, Mishima, JP;
Kazuo Terauchi, Numazu, JP;
Tsuneyoshi Tominaga, Suntou-gun, JP;
Akane Masumoto, Yokohama, JP;
Takuya Mizuguchi, Suntou-gun, JP;
Motohide Shiozawa, Mishima, JP;
Takeshi Naka, Suntou-gun, JP;
Masami Fujimoto, Suntou-gun, JP;
Shingo Ito, Tokyo, JP;
Kousuke Yamamoto, Yokohama, JP;
Yasukazu Ikami, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprising: a toner particle containing a toner base particle containing a binder resin and a colorant, and a resin particle fixed to a surface of the toner base particle; and an inorganic fine particle A, wherein the surface of the toner particle has protruded portions originating in the resin particle, an average length (D) of long sides of the protruded portions is 50 nm to 300 nm, an average Height (H) of the protruded portions is 25 nm to 250 nm, the average long-side length and the average height of the protruded portions satisfies a specific relationship, and an average value of a compactness of the inorganic fine particle A is 0.40 to 0.80, and the attachment rate of the inorganic fine particles A is 0.1% to 5.0% by area.