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. 20, 1999
Filed:
Dec. 30, 1996
Atsushi Nishibata, Yokohama, JP;
Morikazu Mizutani, Kawasaki, JP;
Kazumi Sekine, Kawasaki, JP;
Tadayuki Tsuda, Kawasaki, JP;
Isao Ikemoto, Kawasaki, JP;
Kazushi Watanabe, Yokohama, JP;
Yoshikazu Sasago, Tokyo, JP;
Yasushi Shimizu, Tokyo, JP;
Shinya Noda, Yokohama, JP;
Kazunori Kobayashi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A photosensitive drum includes a cylindrical member having a photosensitive body disposed thereon, and first and second helical gears arranged axially side-by-side on one end of the cylindrical member. The first helical gear is disposed axially outward of the second helical gear, and the first helical gear has an outer diameter greater than an outer diameter of the second helical gear. The first helical gear meshes with a drive gear to rotatingly drive the drum. A sleeve gear of a developing sleeve is selectively engaged with one of the first and second helical gears, depending upon a kind of toner used.