Image stabilizing method for use in an image forming apparatus

Details Image stabilizing method for use in an image forming apparatus Image stabilizing method for use in an image forming apparatus

1997-03-21

1998-10-20

Grimley, Arthur T.

Electrophotography

Control of electrophotography process

Of plural processes

399 50, 399 58, 399 59, 399 94, G03G 1508

Patent

active

058261362

ABSTRACT:
CPU is designed to create toner patches on the surface of the photoreceptor drum and pick up the detected data of the density of the toner patches by a photosensor. CPU calculates a correcting value .DELTA.Vg of the charger output in accordance with the picked up detected data, and compared the corrected charger output Vg with (Vgs+.alpha.) and (Vgs-.alpha.). If the corrections in the same direction are repeated in a row, k.beta. (where 0<k<1) is added to or subtracted from the toner density reference value. When the direction of the correction for the toner concentration reference value to be made is opposite that of the previous one, the absolute value of the correcting value for the current correction is set to be the absolute value of the previous one.

REFERENCES:
patent: 5333037 (1994-07-01), Inoue et al.
patent: 5532794 (1996-07-01), Tokuyama et al.

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