Apparatus provided with a vibration type motor

Details Apparatus provided with a vibration type motor Apparatus provided with a vibration type motor

1997-12-17

2000-04-11

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H02N 200

Patent

active

060491566

ABSTRACT:
The driving control of a vibration type motor for driving, for example e.g., the drum of a copying apparatus is controlled wherein, in a printing operation, the driving control of the motor is effected by amplitude control, and in the initial operation after the closing of a power source switch (i.e., during the start-up), the driving control of the motor is effected by frequency control, whereby appropriate driving control is effected in accordance with the type of work performed by the apparatus.

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patent: 5539268 (1996-07-01), Kataoka
patent: 5631516 (1997-05-01), Kataoka
patent: 5841215 (1998-11-01), Takeishi

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