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. 12, 2011
Filed:
Dec. 06, 2007
Tomofumi Yoshida, Tokyo, JP;
Hirobumi Ooyoshi, Tokyo, JP;
Kenzo Tatsumi, Osaka, JP;
Yoshihiro Kawakami, Hyogo, JP;
Yoshiyuki Shimizu, Osaka, JP;
Tomohiro Kubota, Osaka, JP;
Tomofumi Yoshida, Tokyo, JP;
Hirobumi Ooyoshi, Tokyo, JP;
Kenzo Tatsumi, Osaka, JP;
Yoshihiro Kawakami, Hyogo, JP;
Yoshiyuki Shimizu, Osaka, JP;
Tomohiro Kubota, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device that can be formed at low cost and without increasing the complexity of a die structure of a casing comprises a development roller, a supply roller, a developing portion having an agitating member, a toner hopper disposed above the developing portion, an agitating member in the toner hopper, a partitioning member provided between the developing portion and the toner hopper and having an opening portion, and a collected developer storage portion forming portion for forming a storage space for collected toner collected from the development roller by the supply roller within a fixed distance of the supply roller such that the collected toner moves to the vicinity of the agitating member in the developing portion in accordance with a developer flow generated by the rotation of the supply roller. A pre-incorporation component formed by integrating the partitioning member, the collected developer storage portion forming portion, and a bearing portion for supporting the agitating members is incorporated into the casing.