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:
Nov. 12, 2024
Filed:
Jan. 19, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An external additive for toner comprising a particle of a silicon polymer having a siloxane bond and a Si—Rbond, wherein the Rrepresents an alkyl group having from 1 to 6 carbon atoms, in a chart obtained bySi—NMR measurement of the external additive, where a total peak area attributed to the external additive is denoted by A, and a peak area attributed to the Si—Rbond is denoted by B, a following formula (1) is satisfied, and in the chart obtained bySi—NMR measurement of the external additive, where a total peak area attributed to the silicon polymer is denoted by SA, and a peak area attributed to a T unit structure is denoted by S3, a following formula (2) is satisfied;