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. 05, 2019
Filed:
Mar. 22, 2018
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Tomoya Ichikawa, Nagoya, JP;
Takashi Shimizu, Nagoya, JP;
Masaaki Furukawa, Nagoya, JP;
Naoya Kamimura, Ichinomiya, JP;
Takashi Yasuda, Nagoya, JP;
Masanari Yoshikawa, Nagoya, JP;
Koji Abe, Okazaki, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-shi, Aichi-Ken, JP;
Abstract
A photosensitive drum is rotatable about a first axis extending in a particular direction. A frame rotatably supports the photosensitive drum. A developing roller is rotatable according to driving force about a second axis extending in the particular direction. A surface of the developing roller contacts a surface of the photosensitive drum through toner. A resistance generating member generates a resistance torque TQserving as resistance between the frame and photosensitive drum in a case where the photosensitive drum rotates relative to the frame. In a case where the developing roller rotates according to the driving force in a state where the surface of the developing roller contacts the surface of the photosensitive drum through toner, the resistance torque TQis smaller than a torque TQthat causes the photosensitive drum to rotate due to friction between the surface of the developing roller and the surface of the photosensitive drum.