| 摘要 |
PURPOSE:To form images which are free from unequal densities by controlling the rotating speed of a brush roller via a control circuit at every time when plural sensors for detecting the residual quantity of a toner detects a decrease in the residual quantity of the toner. CONSTITUTION:The toner supplying device detects the residual quantity of the toner 2 by the plural sensors 21 for detecting the residual quantity of the toner and controls the rotating speed of the brush roller 3 via the control circuit 22 at every time when the respective sensors 21 for detecting the residual quantity of the toner detect the residual quantity of the toner. Namely, the rotating speed of a brush roller driving motor 5 is subjected to a speed increase control by the instruction from the control circuit 22 repeatedly at every time when the residual quantity of the toner 2 is detected by the sensors 21 for detecting the residual quantity of the toner of the ensuing stage, by which the constant control of the amt. of the toner 2 falling into a developing machine 6 from the beginning to the last is executed. The unequal densities are eliminated in this way. |
