The present invention relates to a drive system comprising at least one motor with at least one vibration generator each as well as at least one resonator each and a device driven by said motor, wherein the resonator comprises a contact area that cooperates with the surface of the device in order to drive said device.

 
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< Image forming apparatus configured so that an angel is formed by straight line connecting a rotation center of a rotary and a drive transmitting position, and a tangent line at a transfer position of an image bearing member

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