Printing device and method employing latent electrostatic image

Details Printing device and method employing latent electrostatic image Printing device and method employing latent electrostatic image

1988-05-12

1989-08-15

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

3461531, G01D 1500

Patent

active

048579459

ABSTRACT:
A printer and method employing latent electrostatic image development in which the toner brush and print drum operate on separate cycles. See, FIGS. 28 and 28A and the description associated with these figures under the heading, "Toner Brush Drive." Two different drive motors are used to drive the drum and the toner brush, and the toner brush is operated only during those portions of a printing cycle during which latent electrostatic image-bearing areas of the drum are moving past the toner brush. This minimizes the waste and accumulation of wasted toner materials in the printer and the frequency with which accumulations of wasted toner must be removed from the printer. The use of a separate drive motor for the toner brush has the added advantage that it eliminates oscillation and gear-lash, thereby eliminating uneven darkness in the printing.

REFERENCES:
patent: 4710016 (1987-12-01), Waatanabe

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