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:
Sep. 20, 2011
Filed:
Feb. 19, 2009
Yoichi Yamada, Shiojiri, JP;
Masahiro Maeda, Matsumoto, JP;
Junichi Suzuki, Chino, JP;
Takatomo Fukumoto, Shiojiri, JP;
Yoichi Yamada, Shiojiri, JP;
Masahiro Maeda, Matsumoto, JP;
Junichi Suzuki, Chino, JP;
Takatomo Fukumoto, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A development roller includes a base unit having a base recess and a base projection that are formed in a predetermined area of a circumference surface of the base unit by pressing a regular pattern in pressure machining, and a surface layer formed on the circumference surface of the base unit and having a recess and a projection formed respectively in accordance with the base recess and the base projection of the base unit. A thickness of the surface layer is larger than a maximum height of a base swollen portion close to the side edge of the base projection from a regular surface of the base projection.