Color image forming apparatus comprising separate motors for dri

Details Color image forming apparatus comprising separate motors for dri Color image forming apparatus comprising separate motors for dri

1986-03-19

1988-02-02

Prescott, A. C.

Photocopying

Including fiber optics

355 30R, 355 3SH, 355 14SH, 355 14TR, G01G 1500

Patent

active

047231459

ABSTRACT:
A color image forming apparatus including an image bearing member movable along an endless path, on which color toner images are formed, a transfer material supporting member movable along an endless path for supporting a transfer material and conveying it to an image transfer position where the color toner images are superimposed and transferred sequentially to the transfer material. Also provided are a first driving motor for driving the image bearing member, and a second driving motor, separately provided from the first motor, for driving the transfer material supporting member. In addition, the apparatus includes a detector for detecting the speed of the surface of the transfer material, a discriminator for determining whether the speed variations detected by the detector are within a tolerable range, and a control, responsive to the discriminator, for stopping the operation of a subsequent image transfer step when the detected speed variation is beyond the tolerable range, and for repeating latent image forming, developing, and transfer steps.

REFERENCES:
patent: 3987756 (1976-10-01), Katayama et al.
patent: 4072415 (1978-02-01), Inoue et al.
patent: 4477176 (1984-10-01), Russel
patent: 4531828 (1985-07-01), Hoshino
patent: 4629173 (1986-12-01), Hashimoto et al.

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