Touchdown ambipolar development

Details Touchdown ambipolar development Touchdown ambipolar development

1974-12-09

1976-12-28

Braun, Fred L.

Photocopying

Including fiber optics

G03G 1500

Patent

active

039998495

ABSTRACT:
In touchdown-type development systems used in xerographic apparatus, an arrangement produces ambipolar development of the latent image. The arrangement utilizes only changes in electric potential in various portions of the development process to effect a polarity change from positive-to-positive (direct) development to reversal development and vice versa.

REFERENCES:
patent: 3696785 (1972-10-01), Andrus
patent: 3739748 (1973-06-01), Rittler et al.
patent: 3890929 (1975-06-01), Walkup
patent: 3893418 (1975-07-01), Liebman et al.
Schaffert, R. M., "Development of Electrostatic Images," IBM Technical Disclosure Bulletin, vol. 1 No. 3, Oct. 1958, p. 6.

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