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. 21, 2025
Filed:
Oct. 15, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Yu Yoshida, Shizuoka, JP;
Takashi Matsui, Shizuoka, JP;
Kenji Aoki, Shizuoka, JP;
Tsuneyoshi Tominaga, Shizuoka, JP;
Shohei Shibahara, Shizuoka, JP;
Mariko Yamashita, Shizuoka, JP;
Yuna Yamamoto, Tokyo, JP;
Kenji Ookubo, Shizuoka, JP;
Takashi Kenmoku, Tokyo, JP;
Taku Shimoda, Shizuoka, JP;
Masashi Kawamura, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprises a toner particle comprising a resin A and a resin B, wherein the resin A has a structure represented by a predetermined general formula, and the resin B has a monomer unit represented by a predetermined general formula, and a toner manufacturing method comprises a step of dispersing a toner base particle comprising the resin B in an aqueous medium to obtain a toner slurry, and a step of adding a radical polymerization initiator and a monomer composition comprising a monomer represented by a predetermined general formula to the resulting toner slurry to form the resin A on a surface of the toner base particle.