Dry type developing device for a copying apparatus or like appar

Details Dry type developing device for a copying apparatus or like appar Dry type developing device for a copying apparatus or like appar

1974-04-23

1976-03-02

Horan, John M.

Photocopying

Including fiber optics

G03G 1500

Patent

active

039414698

ABSTRACT:
A dry type developing device built in a copying apparatus or like apparatus for developing an electrostatic latent image formed on a copy sheet by means of a magnetic brush wherein the device is provided with sheet guide means and receiver means which have the effect of ensuring proper contact of the copy sheet with the magnetic brush by keeping the copy sheet from invading and moving through, or moving with parts of the image being kept out of contact with, the layer of toner particles magnetically held in place on the peripheral surface of a toner supply drum in the developing station. Soiling of the underside of the copy sheet by toner particles or partial non-developing or under-developing of the latent image can be prevented, so that the toner image formed is high in quality and free from irregularities in density.

REFERENCES:
patent: 3837741 (1974-09-01), Spencer

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