Charge-eliminating apparatus of copier

Details Charge-eliminating apparatus of copier Charge-eliminating apparatus of copier

1990-10-23

1991-11-12

Grimley, A. T.

Photocopying

Contact printing

Light boxes

362800, G03G 1502

Patent

active

050651889

ABSTRACT:
A charge eliminating device for use with a photoreceptor drum. The device eliminates a charge on a required portion of the surface of a photoreceptor drum so that an electrostatic latent image is eliminated on the required portion. The device includes a circuit board for holding an electrical circuit on its surface, the circuit board having a line-shaped edge disposed to face the surface of the photoreceptor drum. A plurality of light emitting elements are disposed on the circuit board to emit light in parallel to the surface of the circuit board in the direction of the line-shaped edge of the circuit board. The device further includes a housing having a plurality of compartments each of which encloses one of the plurality of light emitting elements on the circuit board and has an opening at the line-shaped edge for passing the emitted light in parallel to the surface of the circuit board to the surface of the photoreceptor.

REFERENCES:
patent: 4721977 (1988-01-01), Fukae
patent: 4951064 (1990-08-01), Kun et al.

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