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:
Feb. 03, 2015
Filed:
Feb. 01, 2013
Katsunori Suto, Kanagawa, JP;
Norihiko Aze, Kanagawa, JP;
Takeshi Endoh, Kanagawa, JP;
Masayuki Kami, Kanagawa, JP;
Toru Kobayashi, Kanagawa, JP;
Kohta Shiodera, Kanagawa, JP;
Katsunori Suto, Kanagawa, JP;
Norihiko Aze, Kanagawa, JP;
Takeshi Endoh, Kanagawa, JP;
Masayuki Kami, Kanagawa, JP;
Toru Kobayashi, Kanagawa, JP;
Kohta Shiodera, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A fixing-unit roller includes: a core bar; and an elastic layer formed on an outer peripheral surface of the core bar. The elastic layer is formed from a porous material that contains a plurality of cells. Cells in a cross section obtained by cutting across the porous material are 0.1 μm or greater and 50 μm or less in size. A ratio of an area occupied by composite cells, which are made of partially-overlapping spherical cells, in a 200-μm square in the cross section to an area of the square is 60% or greater and 70% or less.