Electrostatic recording apparatus using variable bias developing

Details Electrostatic recording apparatus using variable bias developing Electrostatic recording apparatus using variable bias developing

1993-03-02

1994-10-18

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355246, 355326R, G03G 2100

Patent

active

053573170

ABSTRACT:
An image forming machine, such as a printer or a copying machine for forming a toner image on a photoreceptor includes an image writer, such as a laser beam generator, for forming a latent image on the photoreceptor; a developer for developing the latent image with a developer, which includes a toner and a carrier; a controller for controlling a toner concentration of the developer so that the toner concentration is equalized; a circuit to automatically form a reference toner image on the photoreceptor; a detector for detecting a toner deposition amount of the reference toner image; and a controller circuit for decreasing a toner charge amount of the toner when the toner concentration is equalized and the toner deposition amount of the reference toner image is smaller than a predetermined value.

REFERENCES:
patent: 5146240 (1992-08-01), Hayashi et al.
patent: 5182575 (1993-01-01), Kato et al.
patent: 5196886 (1993-03-01), Nakane et al.
patent: 5206686 (1993-04-01), Fukui et al.
patent: 5227842 (1993-07-01), Hayashi et al.
patent: 5237369 (1993-08-01), Maruta et al.

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