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:
Jan. 01, 2019
Filed:
Sep. 28, 2017
Tatsuya Ohhira, Kanagawa, JP;
Masayuki Yamane, Kanagawa, JP;
Keiichi Yoshida, Kanagawa, JP;
Atsushi Kurokawa, Kanagawa, JP;
Toshiki Hayashi, Kanagawa, JP;
Yuuki Tsuchiya, Tokyo, JP;
Tatsuya Ohhira, Kanagawa, JP;
Masayuki Yamane, Kanagawa, JP;
Keiichi Yoshida, Kanagawa, JP;
Atsushi Kurokawa, Kanagawa, JP;
Toshiki Hayashi, Kanagawa, JP;
Yuuki Tsuchiya, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device includes upper and lower developer containing portions to contain developer, arranged in a vertical direction, a first developer conveyor to convey developer in the upper developer containing portion to a first side in an axial direction of the first developer conveyor, a second developer conveyor to convey developer in the lower developer containing portion to a second side opposite the first side, a developer-lifting area in which the developer is lifted from the lower developer containing portion to the upper developer containing portion, a first lifting area gear to rotate the first developer conveyor, a second lifting area gear to rotate the second developer conveyor, and a lifting area input gear to input a driving force to the developing device. The lifting area input gear is coupled to the first lifting area gear and coupled via the first lifting area gear via to the second lifting area gear.