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:
Oct. 20, 2020
Filed:
Aug. 26, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Yosuke Iwasaki, Abiko, JP;
Kenta Mitsuiki, Toride, JP;
Wakiko Katsumata, Kashiwa, JP;
Takeshi Ohtsu, Toride, JP;
Masaharu Miura, Toride, JP;
Koh Ishigami, Abiko, JP;
Takakuni Kobori, Toride, JP;
Takaho Shibata, Tokyo, JP;
Daisuke Yamashita, Matsudo, JP;
Hitoshi Sano, Matsudo, JP;
Ryo Nakajima, Nagareyama, JP;
Rei Hijikawa, Kashiwa, JP;
Yuichi Mizo, Toride, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner that is suppressed from deteriorating owing to its long-term use and can maintain high transferability. The toner includes: a toner particle containing an amorphous polyester serving as a binder resin and a polymer A; and inorganic fine particles, wherein the polymer A includes a graft copolymer of a polyolefin and a vinyl-based polymer unit having a carboxylate anion group, and a metal ion having a valence of 2 or more.