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:
Aug. 23, 2011
Filed:
Jun. 24, 2008
Hiroyuki Sakakibara, Yokohama, JP;
Norio Hashimoto, Odawara, JP;
Hiroaki Sakai, Mishima, JP;
Atsushi Iwasaki, Susono, JP;
Yuko Sekihara, Tokyo, JP;
Kazuo Kishino, Yokohama, JP;
Masaaki Takahashi, Yokohama, JP;
Katsuhisa Matsunaka, Inagi, JP;
Hiroyuki Sakakibara, Yokohama, JP;
Norio Hashimoto, Odawara, JP;
Hiroaki Sakai, Mishima, JP;
Atsushi Iwasaki, Susono, JP;
Yuko Sekihara, Tokyo, JP;
Kazuo Kishino, Yokohama, JP;
Masaaki Takahashi, Yokohama, JP;
Katsuhisa Matsunaka, Inagi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A pressure roller forms a nip for contacting a heating member to pinch and convey a heat recording material. The roller includes a core metal and an elastic layer containing filler. The elastic layer containing the filler includes thermal conductive filler with a length of not less than 0.05 mm and not more than 1 mm and with a thermal conductivity λin the longitudinal direction in a range of λ≧500 W/(m·k), being dispersed in not less than 5 vol % and not more than 40 vol %. The elastic layer containing the filler has a thermal conductivity λin the longitudinal direction perpendicular to a recording material conveyance direction, of λ≧2.5 W/(m·k) and an ASKER-C hardness of the filler is not more than 60 degrees. A solid rubber elastic layer with a thermal conductivity λ in a thickness direction of not less than 0.16 W/(m·k) and not more than 0.40 W/(m·k) is included.