Title: Rotary encoder, roller parts, belt conveyance apparatus, and image forming apparatus
Application Number: 200610135789 Application Date: 2006.10.19
Publication Number: 1959350 Publication Date: 2007.05.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01D5/34;F16D3/12;F16F15/126
Applicant(s) Name: Ricoh KK Address:
Inventor(s) Name: Yoshioka Hiroshi
Attorney & Agent: zhangjing qiang
Abstract:
    A rotary encoder includes a shaft which serves as a rotation axis, a disc supporting plate fixed to the shaft, an encoder disc having a center hole, a first side face, and a second side face opposing the first side face, an elastic member contacting and pressing the second side face of the encoder disc, and a retaining member retaining the second side face of the encoder disc via the elastic member. The first side face is contacted with a surface of the disc supporting plate. The shaft is inserted into the hole. A belt conveyance apparatus includes an endless belt, a roller configured to rotate the endless belt, including a shaft and the rotary encoder. The rotary encoder is provided on the shaft of the roller. An electrophotographic image forming apparatus includes an image forming unit and the belt conveyance apparatus.
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