Image recording apparatus with exposure start and toner supply c

Details Image recording apparatus with exposure start and toner supply c Image recording apparatus with exposure start and toner supply c

1998-10-30

2000-03-07

Royer, William

Electrophotography

Control of electrophotography process

Control of developing

399 61, 399 62, G03G 1510

Patent

active

060351535

ABSTRACT:
An image recording apparatus includes a photosensitive drum on which an electrostatic latent image is formed by laser beam irradiation from an optical unit. A developing unit, which receives toner from a toner feeder and is provided with a toner agitator, supplies toner onto the drum for converting the latent image to a visible image. A toner sensor detects the concentration of the toner within the developing unit for output of a corresponding detection signal. A toner supply controller controls the toner feeder by comparing the output of the toner sensor with a varying standard voltage which varies linearly from a peak level to a steady level. An exposure start controller causes the optical unit to start irradiating the photosensitive drum with light after the rotation of the drum is stabilized but before the output of the toner sensor reaches the peak level.

REFERENCES:
patent: 5303011 (1994-04-01), Noguchi et al.

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