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:
Jul. 21, 2026
Filed:
Nov. 25, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Masashi Uno, Shizuoka, JP;
Shohei Kototani, Shizuoka, JP;
Dai Nozaki, Shizuoka, JP;
Kenji Ookubo, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A process cartridge includes a toner and a developing roller. In the toner, a cohesion cluster containing fine silica particles and a binder component is present on surfaces of toner particles. Ratios of toner particles having the cohesion cluster before and after treatments with ultrasonic waves under specific conditions in terms of number % are within predetermined ranges. The developing roller has an Asker C hardness of 56 degrees or more and 75 degrees or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile