Image forming apparatus having inference means and method of man

Details Image forming apparatus having inference means and method of man Image forming apparatus having inference means and method of man

1993-03-23

1994-06-14

Fuller, Benjamin R.

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355204, 355246, 395900, 430 43, G03G 2100

Patent

active

053214684

ABSTRACT:
In an image forming apparatus of the present invention, the adhesion amounts of developing agent on a high-density test pattern and a low-density test pattern are measured by a toner density measuring unit. On the basis of the measured adhesion amounts of developing agent on the high-density region and low-density region and the target values of the adhesion amounts, deviations of the adhesion amounts of the high-density region and the low density region are calculated. The renewal amount of contrast voltage and the renewal amount of background voltage corresponding to the high-density region deviation and low-density region deviation are inferred by an inference unit on the basis of inference data stored in a memory unit. The grid bias value and development bias value corresponding to the inferred renewal amounts of contrast voltage and background voltage are calculated. The grid bias voltage and development bias voltage are varied in accordance with the calculated grid bias value and development bias value.

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