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:
Jun. 22, 2004
Filed:
Dec. 11, 2002
Kazuaki Ikeda, Sennan-gun, JP;
Katsuya Yamada, Sennan-gun, JP;
Sumitomo Electric Fine Polymer, Inc., Osaka, JP;
Abstract
A manufacturing method is provided for a roller, by which a roller having low eccentricity and high surface smoothness can be obtained without the need to perform cumbersome processes such as polishing of a foamed layer. The manufacturing method for a roller includes the steps of injecting a foam-layer compound into the space between a core bar, which is disposed at the center of a cylindrical mold, and an electron beam-irradiated tube, which has an outer diameter somewhat smaller than an inside diameter of the cylindrical mold, and which is set inside the cylindrical mold, and heating and foaming the foam-layer compound, so that the outer surface of the electron beam-irradiated tube is pressed against the inner surface of the cylindrical mold.