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:
Jan. 18, 2005
Filed:
Jun. 24, 1999
Kiyohiko Uchida, Chiba, JP;
Hiroo Ushioda, Chiba, JP;
Satoshi Ozawa, Chiba, JP;
Yasuhiko Shimada, Chiba, JP;
Sousuke Miyaji, Chiba, JP;
Noriyuki Kozakai, Tokyo, JP;
Tatsuya Okamura, Tokyo, JP;
Masayoshi Konishi, Osaka, JP;
Kiyohiko Uchida, Chiba, JP;
Hiroo Ushioda, Chiba, JP;
Satoshi Ozawa, Chiba, JP;
Yasuhiko Shimada, Chiba, JP;
Sousuke Miyaji, Chiba, JP;
Noriyuki Kozakai, Tokyo, JP;
Tatsuya Okamura, Tokyo, JP;
Masayoshi Konishi, Osaka, JP;
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Abstract
The present invention relates to paper feed rollers required to transfer papers in printers, facsimiles, copiers, etc. with accurately, and provides novel paper feed rollers which are lighter, less expensive and mass-producible with larger diameters as compared with conventional paper feed rollers. The paper feed roller according to the present invention includes a rotary shaft, a cylindrical roller portion formed by press molding a mixture of a hydraulic composition, followed by curing and hardening, and integrated with an outer periphery of the rotary shaft.