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. 03, 2026
Filed:
Sep. 12, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Takashi Kenmoku, Shizuoka, JP;
Yuhei Terui, Shizuoka, JP;
Shintaro Noji, Shizuoka, JP;
Kodai Hayashi, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The process cartridge is configured such that a toner flow path formed of an inner wall of the developing chamber and the surface of the toner supplying roller is formed upstream of the toner supplying roller in a rotation direction with respect to the position where the developing roller is in contact with the toner supplying roller, a closest distance between the inner wall of the developing chamber and the surface of the toner supplying roller in the toner flow path is 1.0 mm or greater and 5.0 mm or less, a peripheral speed ratio R between the developing roller and the toner supplying roller satisfies a range of 1.1 to 2.5, and a toner satisfying a predetermined requirement is used.