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. 03, 2010
Filed:
Dec. 05, 2007
Yasuo Miyoshi, Kanagawa, JP;
Yasuo Miyoshi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device capable of improving the fluidity of a developer and alleviating the stress generated in the developer, and a process cartridge and an image forming apparatus that use this developing device. In a connecting portion, there is formed a storage portion for storing the developer, in which the cross-sectional area thereof has width Dthat continuously becomes wider toward the top, compared to the width Dof the cross-sectional area of an opening portion by which the developer is lifted up from the second screw, and becomes wider than Dat the central part thereof. Furthermore, the width of the cross-sectional area thereof continuously becomes narrow.