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:
Oct. 02, 2007
Filed:
Nov. 04, 2005
Daisuke Saito, Tokyo, JP;
Ryuta Takeichi, Toyonaka, JP;
Masaharu Furuya, Yokohama, JP;
Takahiro Nakayama, Yokohama, JP;
Daisuke Saito, Tokyo, JP;
Ryuta Takeichi, Toyonaka, JP;
Masaharu Furuya, Yokohama, JP;
Takahiro Nakayama, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An endless belt device includes an endless belt and a plurality of rotary members rotatably supporting the endless belt. One of the plurality of rotary members includes a marker formed on a part of a circumferential surface of a rotation axis thereof. A reflection-type sensor is arranged to oppose the circumferential surface of the rotation axis of the one of the plurality of rotary members to detect the marker formed on the circumferential surface. A rotation speed of the endless belt is detected by detecting the marker on the circumferential surface of the rotation axis of the one of the plurality of rotary members by the reflection-type sensor.