Development apparatus of latent electrostatic images

Details Development apparatus of latent electrostatic images Development apparatus of latent electrostatic images

1983-04-06

1985-01-15

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14D, 430119, 118650, G03G 1510

Patent

active

044935501

ABSTRACT:
An electrostatic recording system having a drum 1 carrying a positively charged latent image 14, and a negatively charged cylindrical sleeve 10 having depressions 10a or other ink holding means on its outer surface. The sleeve is rotated into a tank 11 holding an electrically conducting ink 12 which is picked up in the depressions. The sleeve and drum are counter-rotating at different velocities and approach a narrow gap at which point the negatively charged ink is attracted to the positively charged image. Thereafter the inked image is transferred to a sheet of paper and the drum is cleaned and discharged.

REFERENCES:
patent: 3232190 (1966-02-01), Willmott
patent: 3980404 (1976-09-01), Townsend
patent: 3991711 (1976-11-01), Nakano et al.
patent: 3993020 (1976-11-01), Schneider et al.
patent: 4023967 (1977-05-01), McGibbon
patent: 4024838 (1977-05-01), Horie

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