Residual toner cleaning apparatus for color image forming device

Details Residual toner cleaning apparatus for color image forming device Residual toner cleaning apparatus for color image forming device

1991-02-12

1992-05-19

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355210, 355326, G03G 2100

Patent

active

051152800

ABSTRACT:
The present invention relates to a color copying apparatus which prevents toner scattering from a tip portion of a cleaner to an image area of an image carrying drum. An exposing device forms a stripe latent image in a stripe area at an upstream of the image area of an image carrying drum in a rotating direction of the image carrying drum, and a developing device stops development within the stripe area. The result is a generation of a sharp potential gap in the stripe area. The cleaner starts cleaning by touching to the stripe area, and accumulated toner on the tip of the cleaner is attracted by the sharp potential gap and is held within the stripe area. This prevents the toner from being scattered to the image area of the image carrying drum.

REFERENCES:
patent: 4451136 (1984-05-01), Tanioka et al.
patent: 4888619 (1989-12-01), Tottori

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