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:
Sep. 25, 2007
Filed:
Dec. 28, 2006
Toshiharu Kawai, Mishima, JP;
Kazushi Watanabe, Mishima, JP;
Yoshihiro Ito, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A process cartridge, and a main assembly of an image forming apparatus to which the cartridge is detachably mountable. The main assembly includes a motor, a driving rotatable member for receiving a driving force from the motor, and a twisted hole substantially coaxial with the driving rotatable member. The process cartridge includes an electrophotographic photosensitive drum, a process device actable on the drum, and a projection provided at a longitudinal end of the drum. When the driving rotatable member rotates with the hole and the projection engaged with each other, a rotational driving force is transmitted from the driving rotatable member to the drum through engagement between the hole and the projection with the projection being pulled into the hole.