Multicolor image forming apparatus having transfer roller for re

Details Multicolor image forming apparatus having transfer roller for re Multicolor image forming apparatus having transfer roller for re

1990-03-09

1991-08-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355271, 355277, 355281, 355327, G03G 1501

Patent

active

050437615

ABSTRACT:
A multicolor image forming apparatus forms a series of electrostatic images on an image member and tones those images with different colored toners. The toners are transferred in registration to a portion of a continuous web receiving sheet by securing the portion of the web to a transfer roller and moving the transfer roller in a first direction to receive an image and in a second direction to return the portion of the web to a position for receiving a second web image in registration. Movement of the transfer roller during transfer is controlled by the image member. In between transfers movement of the transfer is controlled by a first stepper motor which disengages and engages the transfer roller from the image member and a second stepper motor which resets the transfer roller to its beginning position. The reset motor also brings the transfer roller up to the speed of the image member before reengagement.

REFERENCES:
patent: 3801197 (1974-04-01), Akiyama et al.
patent: 3957367 (1976-05-01), Goel
patent: 4914482 (1990-04-01), Ammenheuser et al.

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