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. 29, 2026
Filed:
Jul. 11, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprising a toner particle comprising: a toner base particle comprising a binder resin; and an organosilicon polymer at a surface of the toner base particle, wherein protruded portions constituted from the organosilicon polymer are present at the surface of the toner base particle, when a protruded portion having a height of 30 to 200 nm among the protruded portions is defined as a protrusion x, and the protrusion x is observed in a specific condition using a scanning electron microscope, an average aspect ratio of the protrusion x is 1.3 or more, and when shape measurements of a specific region of the surface of the toner particle are carried out using an atomic force microscope and measured data obtained by observing the protruded portions at the surface of the toner particle is subjected to surface roughness analysis, an average angle of inclination Δa is 1.0 to 2.0°.