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. 18, 2007
Filed:
May. 26, 2006
Eisaku Murakami, Tokyo, JP;
Masami Tomita, Tokyo, JP;
Masanori Kawasumi, Tokyo, JP;
Toshio Koike, Tokyo, JP;
Naohiro Kumagai, Tokyo, JP;
Atsushi Sampe, Tokyo, JP;
Takeshi Shintani, Tokyo, JP;
Masato Yanagida, Tokyo, JP;
Yutaka Takahashi, Tokyo, JP;
Hiroya Hirose, Tokyo, JP;
Shin Hasegawa, Tokyo, JP;
Hiroyuki Nagashima, Tokyo, JP;
Takeshi Uchitani, Tokyo, JP;
Kazunori Karasawa, Tokyo, JP;
Kentaroh Matsumoto, Tokyo, JP;
Tokuya Ohjimi, Tokyo, JP;
Mugijiroh Uno, Tokyo, JP;
Eisaku Murakami, Tokyo, JP;
Masami Tomita, Tokyo, JP;
Masanori Kawasumi, Tokyo, JP;
Toshio Koike, Tokyo, JP;
Naohiro Kumagai, Tokyo, JP;
Atsushi Sampe, Tokyo, JP;
Takeshi Shintani, Tokyo, JP;
Masato Yanagida, Tokyo, JP;
Yutaka Takahashi, Tokyo, JP;
Hiroya Hirose, Tokyo, JP;
Shin Hasegawa, Tokyo, JP;
Hiroyuki Nagashima, Tokyo, JP;
Takeshi Uchitani, Tokyo, JP;
Kazunori Karasawa, Tokyo, JP;
Kentaroh Matsumoto, Tokyo, JP;
Tokuya Ohjimi, Tokyo, JP;
Mugijiroh Uno, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A cleaning unit includes a first blade and a second blade. The first blade is in contact with an image carrier or a paper carrier and removes adhered substances remained on surface of these. The second blade has an abrasive layer that is formed by including abrasive particles in an elastic material and is disposed in the downstream side of the first blade. The second blade is allowed to be in contact with the image carrieror the paper carrier. Volume occupancy of abrasive particles in an area of contact of the second blade with either the image carrier or the paper carrier is not less than 50 percent and not more than 90 percent.