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:
Jul. 30, 2024
Filed:
Nov. 23, 2022
Developing device including filter detachable holder, process cartridge, and image forming apparatus
Yusuke Chiba, Kanagawa, JP;
Takuya Suganuma, Kanagawa, JP;
Kazuki Yogosawa, Tokyo, JP;
Taku Kumiya, Kanagawa, JP;
Hotaru Hashikawa, Kanagawa, JP;
Yusuke Chiba, Kanagawa, JP;
Takuya Suganuma, Kanagawa, JP;
Kazuki Yogosawa, Tokyo, JP;
Taku Kumiya, Kanagawa, JP;
Hotaru Hashikawa, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A developing device includes a developing case, a filter, and a filter holder. The developing case stores developer inside to develop a latent image formed on a surface of an image bearer and has an opening portion that communicates between an inside and an outside of the developing device. The filter has a lower weight density per unit volume at a first side of the filter facing the inside of the developing device than a weight density per unit volume at a second side of the filter facing the outside of the developing device. The filter holder is detachably attached to the opening portion of the developing case with the filter held by the filter holder.