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. 04, 2014
Filed:
Apr. 18, 2011
Applicant:
Takashi Birumachi, Kashiwa, JP;
Inventor:
Takashi Birumachi, Kashiwa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 15/01 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0178 (2013.01); G03G 2221/1657 (2013.01); G03G 2215/0158 (2013.01); G03G 15/757 (2013.01);
Abstract
An image forming apparatus includes a first image forming means for forming a toner image on a first photosensitive drum, a first motor configured to rotationally drive the first photosensitive drum, a second image forming means for forming a toner image on a second photosensitive drum having an outer diameter larger than that of the first photosensitive drum, and a second motor configured to rotationally drive the second photosensitive drum. The first motor is a DC motor, and the second motor is a stepping motor.