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:
Feb. 10, 2026
Filed:
Apr. 03, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Rieko Takabe, Tokyo, JP;
Katsuichi Abe, Kanagawa, JP;
Yuki Yamamoto, Chiba, JP;
Akio Nishi, Tokyo, JP;
Kazuhisa Shida, Kanagawa, JP;
Akihisa Matsukawa, Tokyo, JP;
Yasukazu Ikami, Tokyo, JP;
Hiroki Tanaka, Kanagawa, JP;
Kunihiko Sekido, Tokyo, JP;
Takashi Kenmoku, Shizuoka, JP;
Ryo Sugiyama, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A contact member that comes into contact with a surface of a developer carrier has a volume resistivity of 10ohm·cm or less, and a developer satisfies the following conditions: a rotating member and the contact member have a resistance value of 1.0×10ohms or less, and a first resistance value ranges from 1.0×10ohms to 1.0×10ohms as measured in a state where the rotating member is stopped and the developer is located between the rotating member and the contact member, and a second resistance value is in the range of the first resistance value and is 40% or more with respect to the first resistance value, as measured in a state where the rotating member is rotated at 200 mm/s with respect to the contact member and the developer is located between the rotating member and the contact member.