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:
Dec. 01, 2009
Filed:
Sep. 15, 2006
Hirofumi Ookushi, Ibaraki, JP;
Masahiko Saito, Ibaraki, JP;
Kenji Nakamura, Ibaraki, JP;
Atsushi Onose, Ibaraki, JP;
Hirofumi Ookushi, Ibaraki, JP;
Masahiko Saito, Ibaraki, JP;
Kenji Nakamura, Ibaraki, JP;
Atsushi Onose, Ibaraki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes: a photosensitive member; a plurality of development devices attachable to and detachable from a main body of the image forming apparatus, a motor; and a drive transmission member. Each development device includes a development roller for forming a toner image on a surface of the photosensitive member. The motor is rotatable forward and backward, for driving the development roller. The drive transmission member is disposed between the motor and the development roller. The drive transmission member includes a plurality of gears, a plurality of shafts and a plurality of one-way clutches. An air gap is provided in at least one engagement portion where the gears engage with the shafts.