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. 10, 2004
Filed:
Jun. 07, 2001
Shuuichi Endoh, Kanagawa-Ken, JP;
Osamu Endou, Kanagawa-Ken, JP;
Nobuhiko Umezawa, Kanagawa-Ken, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A development apparatus includes a development roller, a supplying roller, and a toner layer regulating member. The development roller contacts an image carrying member and develops an electrostatic latent image into a toner image on the image carrying member. The development roller may be made of aluminum and is rotatably mounted in the apparatus. The supplying roller supplies toner to the development roller. The toner layer regulating member regulates the toner to form a thin film on the development roller. The toner layer regulating member has a roller shape, a surface roughness R in a range of from 0.5 &mgr;m to 2 &mgr;m, and a dynamic friction coefficient in a range of from 0.1 to 0.8.