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:
May. 15, 2007
Filed:
Mar. 30, 2006
Masato Yanagida, Tokyo-to, JP;
Hiroyuki Nagashima, Yokohama, JP;
Naohiro Kumagai, Kawasaki, JP;
Toshio Koike, Kawasaki, JP;
Atsushi Sampe, Yokohama, JP;
Masanori Kawasumi, Yokohama, JP;
Eisaku Murakami, Tokyo-to, JP;
Takeshi Uchitani, Kamakura, JP;
Masami Tomita, Numazu, JP;
Takeshi Shintani, Kawasaki, JP;
Tsutomu Yamakami, Yokohama, JP;
Masato Yanagida, Tokyo-to, JP;
Hiroyuki Nagashima, Yokohama, JP;
Naohiro Kumagai, Kawasaki, JP;
Toshio Koike, Kawasaki, JP;
Atsushi Sampe, Yokohama, JP;
Masanori Kawasumi, Yokohama, JP;
Eisaku Murakami, Tokyo-to, JP;
Takeshi Uchitani, Kamakura, JP;
Masami Tomita, Numazu, JP;
Takeshi Shintani, Kawasaki, JP;
Tsutomu Yamakami, Yokohama, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A charging device including a charging roller having a metal cylinder and an elastic layer located thereon, and a cleaner for cleaning the surface of the charging roller. The cleaner includes a driving shaft and a cleaning roller which is rotatably mounted on the driving shaft. The cleaning roller is made of a non-cellular foam resin having a density of from 5 to 15 kg/mand a tensile strength of from 1.2 to 2.2 kg/cm.