Image forming apparatus and method enabling toner amount control

Details Image forming apparatus and method enabling toner amount control Image forming apparatus and method enabling toner amount control

1996-12-26

1998-09-22

Beatty, Robert

Electrophotography

Control of electrophotography process

Artificial intelligence

399 49, 399 60, G03G 1500

Patent

active

058129030

ABSTRACT:
Operation variables such as laser power, grid voltage, and developing bias are corrected by using image-density controlling rules so as to control the image density. Control of toner supply is also effected by using the image-density controlling rules. A solid density reference pattern corresponding to actual values of the operation variables is measured, and a rule which fits the solid density is used to correct the operation variables. A solid density to be obtained with standard values of the operation variables is calculated by using the composed rule. A standard solid density for a standard toner concentration or a standard toner charge amount is outputted, and is compared with the calculated solid density. The toner supply is controlled in such a manner that an error between the two solid densities becomes zero, to thereby ensure that the toner concentration in a developing device or the toner charge amount reaches a standard value.

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