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:
Sep. 30, 2025
Filed:
Mar. 26, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Kazunari Ooyama, Ibaraki, JP;
Yuu Nishimura, Chiba, JP;
Nobuyoshi Sugahara, Tokyo, JP;
Hitoshi Sano, Chiba, JP;
Toru Takahashi, Ibaraki, JP;
Kazuki Murata, Tokyo, JP;
Daisuke Tsujimoto, Tokyo, JP;
Koh Ishigami, Chiba, JP;
Shin Kitamura, Ibaraki, JP;
Takaho Shibata, Tokyo, JP;
Ryo Nakajima, Chiba, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner includes toner particles containing a binder resin, a colorant, and inorganic fine particles, in which in a depth profile of an element distribution in a depth region from the outermost surface of a particle to a depth of 500 nm the depth profile being obtained by an element analysis performed by X-ray photoelectron spectroscopy using the toner as a sample, two or more minimum points of a concentration of a carbon element in the depth region exist, a concentration of an inorganic element becomes a maximum value at a depth position corresponding to each of the minimum points, and the inorganic element is an element derived from the inorganic fine particle.