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:
Oct. 05, 2010
Filed:
May. 27, 2008
Norio Tomita, Nara, JP;
Yoshikazu Harada, Nara, JP;
Tetsushi Ito, Nara, JP;
Tetsuya Yamaguchi, Nara, JP;
Yoshiteru Kikuchi, Nara, JP;
Kenichi Isomi, Nara, JP;
Showtaro Okamoto, Nara, JP;
Norio Tomita, Nara, JP;
Yoshikazu Harada, Nara, JP;
Tetsushi Ito, Nara, JP;
Tetsuya Yamaguchi, Nara, JP;
Yoshiteru Kikuchi, Nara, JP;
Kenichi Isomi, Nara, JP;
Showtaro Okamoto, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
It is an object to prevent distortions and deviations of images caused by the eccentricity of a driven gear mounted to a rotational shaft of a photosensitive drum. There are provided a driving gear which is secured to a rotational shaft of a rotational driving power source and is rotated at a constant peripheral speed, a driven gear secured coaxially to a rotational shaft of a cylindrical-shaped photosensitive member, a phase control gear having the same diameter as that of the driven gear and having the same rotational speed variation characteristic as that of the driven gear, and a transmission gear, and a driving force from the driving gear is transmitted to the driven gear through the phase control gear and the transmission gear.