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:
Apr. 02, 2013
Filed:
Nov. 18, 2009
Masahiro Maeda, Matsumoto, JP;
Yoichi Yamada, Shiojiri, JP;
Yoshiyuki Kurebayashi, Shiojiri, JP;
Daisuke Matsumoto, Matsumoto, JP;
Masaru Kobashi, Matsumoto, JP;
Takatomo Fukumoto, Shiojiri, JP;
Masahiro Maeda, Matsumoto, JP;
Yoichi Yamada, Shiojiri, JP;
Yoshiyuki Kurebayashi, Shiojiri, JP;
Daisuke Matsumoto, Matsumoto, JP;
Masaru Kobashi, Matsumoto, JP;
Takatomo Fukumoto, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method of manufacturing a developing roller, including: a first rolling process for forming a first inclined groove which is continuous in a helical shape, by rotating a first die having blades inclined with respect to an axial direction and a circumferential direction, and a non-bladed die, and feeding an unprocessed developing roller between the first die and the non-bladed die; and a second rolling process for forming a second inclined groove which is continuous in a helical shape and intersects with the first inclined groove, by rotating a second die having blades inclined with respect to an axial direction and a circumferential direction in the direction opposite to that of the first die, and the non-bladed die in the same direction opposite to that in the first rolling process, and feeding the developing roller between the second die and the non-bladed die.