Coating apparatus – With means to apply electrical and/or radiant energy to work... – With means to orient coating particles
Patent
1976-02-17
1978-02-14
Jaudon, Henry S.
Coating apparatus
With means to apply electrical and/or radiant energy to work...
With means to orient coating particles
118652, 118661, 96 1SD, 355 10, G03G 1510
Patent
active
040732665
ABSTRACT:
A process and apparatus for developing a latent electrostatic image on an electrophotographic copying material by means of a toner dispersion. An infeed roller applies the toner dispersion to the copying material, and, downstream thereof, a distribution roller acts on the surface of the copying material. To solve the problem of reproducing fine white indicia, such as thin white lines, on a black background, a voltage, having the same polarity as the surface charge of the latent electrostatic image on the copying material, is applied to the distribution roller. Squeegee rollers downstream of the distribution roller effect removal of unused toner. Toner, which adheres to the distribution roller during application of voltage to the distribution roller, is sprayed off and recovered for recycling, the spraying agent being toner dispersion.
REFERENCES:
patent: 3592675 (1971-07-01), Cheng
patent: 3689147 (1972-09-01), Suzuki
patent: 3905331 (1975-09-01), Kimura et al.
patent: 3921579 (1975-11-01), Wright
Arneth Reinhold
Schwandt Rudi
Hoechst Aktiengesellschaft
Jaudon Henry S.
Schwaab Richard L.
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