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:
Mar. 04, 2025
Filed:
Apr. 21, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Keisuke Adachi, Tokyo, JP;
Takayuki Toyoda, Shizuoka, JP;
Atsuhiko Ohmori, Kanagawa, JP;
Tomoko Sugita, Shizuoka, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner is provided that comprises a toner particle comprising a binder resin and a wax, and an inorganic fine particle on a surface of the toner particle, wherein the binder resin comprises a resin A; the toner satisfies 2.50≤SPa−SPw≤4.50, where SPa (cal/cm)is the SP value of the resin A, and SPw (cal/cm)is the SP value of the wax; the inorganic fine particle comprises a silica fine particle whose surface has been treated with a silicone oil; in aSi solid-state NMR measurement of the silica fine particle, 30≤B≤60 and 4.0≤A/B≤6.0 are satisfied, taking A as an integration value of a D unit obtained by taking an integration value of a Q unit in a CP/MAS measurement as 100, and taking B as an integration value of a D unit obtained by taking an integration value of a Q unit in a DD/MAS measurement as 100.