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. 19, 2026
Filed:
Dec. 06, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Yuya Chimoto, Chiba, JP;
Masayuki Hama, Ibaraki, JP;
Hayato Ida, Ibaraki, JP;
Kouichirou Ochi, Chiba, JP;
Kazuhisa Shirayama, Tokyo, JP;
Hisasuke Kajihara, Ibaraki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner including a toner particle which contains: a resin component containing a binder resin; and an inorganic fine particle, the inorganic fine particle is at least one inorganic fine particle selected from the group consisting of (i) a particle containing CaCO, (ii) a particle containing BaSO, (iii) a particle containing MgSiO(OH), and (iv) a particle containing AlSiO(OH), a number average particle diameter Dc of a primary particle of the inorganic fine particle is 100 nm or more and 1000 nm or less, when a cross section of the toner particle is observed, an inorganic fine particle domain A having a dispersion diameter of 2.0 times or more of Dc is present in the cross section, and the inorganic fine particle and the inorganic fine particle domain A occupy a specific percentage of an area in the cross section of the toner particle.