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:
Jun. 08, 2010
Filed:
Jun. 01, 2007
Applicant:
Tetsuya Senoh, Kanagawa, JP;
Inventor:
Tetsuya Senoh, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a development device which does not accumulate the developer at the corners on the internal walls, the process cartridge having such a development device, and the image forming apparatus, without increasing the size of the device or complicating its structure. A curving surface section is provided in at least one of four sections where internal walls in which bearings of the first rotary conveying body and the second rotary conveying body are positioned intersect with internal walls that are parallel to the first rotary conveying body and the second rotary conveying body.