IMAGE FORMING APPARATUS AND ITS ADJUSTING METHOD

摘要

PROBLEM TO BE SOLVED: To solve the problem that image density is fluctuated because of the variance of correction due to the difference of the characteristics of an individual toner concentration sensor though the correction corresponding to the number of image forming sheets is performed because detection sensitivity is changed according as the number of image forming sheets is increased in toner replenishment control using the toner concentration sensor for detecting the toner concentration by the detection of magnetic permeability.

SOLUTION: A table set peculiarly to each toner concentration sensor is used as the table of adjusting values for correcting a toner concentration sensor referred to by a control means for controlling the toner replenishment.

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