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. 22, 2014
Filed:
Dec. 22, 2011
Yoshio Hattori, Kawasaki, JP;
Atsushi Nakamoto, Kawasaki, JP;
Yoshiyuki Fukuda, Machida, JP;
Toshio Koike, Machida, JP;
Hiroaki Okamoto, Zama, JP;
Yoshio Hattori, Kawasaki, JP;
Atsushi Nakamoto, Kawasaki, JP;
Yoshiyuki Fukuda, Machida, JP;
Toshio Koike, Machida, JP;
Hiroaki Okamoto, Zama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Developing devices, process cartridges and image-forming apparatuses, having a chamber for conveying recovered developer on the top of another chamber for conveying supplying developer, where the developer is conveyed by screws inside the chambers respectively, when mixing and conveying the developing agent, a shielding member which separates the chambers, a guide section is provided in the shielding member to guide a developing agent which has left a developing roller toward the screw in the upper chamber, and a third communication section is provided next to the guide section, at the back of where the guided developer contacts the screw wings in the upper chamber, and the third communication section communicates the chambers with each other, and the third communication section is provided from center to downstream in the conveyance direction of the developer by the screw upper.