Image forming apparatus comprising ultrasonic motors

Details Image forming apparatus comprising ultrasonic motors Image forming apparatus comprising ultrasonic motors

1997-01-16

2000-10-31

Chen, Sophia S.

Electrophotography

Image formation

Photoconductive member

399 75, G03G 1500

Patent

active

061415154

ABSTRACT:
The present invention relates to an image forming apparatus which forms the multiple image by transferring the color toner images onto the transfer material sequentially. In such apparatus the drive source is provided for each image bearing member to rotate it. The ultrasonic motor is suitably used as the drive source and is attached to the rotary shaft thereof to detect rotating condition of the motor.

REFERENCES:
patent: 4748474 (1988-05-01), Kurematsu et al.
patent: 5327339 (1994-07-01), Takeda et al.
patent: 5515139 (1996-05-01), Hou et al.
patent: 5521455 (1996-05-01), Miyazawa et al.

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