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. 05, 2012
Filed:
Nov. 06, 2007
Applicants:
Junichi Suzuki, Chino, JP;
Noboru Sakurai, Chino, JP;
Inventors:
Junichi Suzuki, Chino, JP;
Noboru Sakurai, Chino, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01B 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A developing roller on a circumferential surface of which toner is held is provided. In the developing roller, intersecting first and second grooves are formed. Protrusion portions are disposed in areas surrounded by the first and second grooves. The protrusion portions have minute projections.