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:
Aug. 10, 2021
Filed:
Sep. 24, 2019
Ryusuke Mase, Kanagawa, JP;
Yoshihiro Fujiwara, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Naohiro Kawashima, Kanagawa, JP;
Yuuki Tsuchiya, Tokyo, JP;
Ryusuke Mase, Kanagawa, JP;
Yoshihiro Fujiwara, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Naohiro Kawashima, Kanagawa, JP;
Yuuki Tsuchiya, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image forming apparatus includes a developing device including at least one stirring rotator configured to stir a developer in the developing device, a driver configured to drive the at least one stirring rotator in forward and reverse rotation, a device detector configured to detect whether the developing device is set in the image forming apparatus, and control circuitry configured to execute a warm-up operation. In the warm-up operation, the driver drives the at least one stirring rotator alternately in the reverse rotation and the forward rotation in response to a detection of setting of the developing device in the image forming apparatus by the device detector and a detection of a predetermined condition.