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:
Dec. 31, 2019
Filed:
Dec. 11, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A cartridge includes a cleaning member configured to retain specific particles having a smaller equivalent sphere diameter than toner particles at a contact region. The specific particles contain an organosilicon polymer having a partial structure represented by R—SiO, wherein R represents an alkyl group having 1 to 6 carbon atoms. The atomic concentration dSi of silicon in the specific particles satisfies 1.0 atomic %≤dSi≤29.0 atomic % when the total atomic concentration of silicon, oxygen, and carbon in the specific particles is measured to be 100.0 atomic % by electron spectroscopy for chemical analysis (ESCA). Also, the specific particles satisfy L/L≤3/4 or L/L≥4/3 when assuming that the specific particles have three lengths L, L, and Lin three axis directions in a three-dimensional coordinate system, wherein Lis the longest one of the three lengths, in an average value of a unit volume.