| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus in which the control voltage is not updated even when a serviceman executes a replacement initial operation mode again. SOLUTION: The control voltage for performing the control so that the output voltage when the toner concentration (5%) of a developer stored in an initial developer storage container is sensed by a standard toner concentration sensor becomes the reference output voltage (3 V) is stored in advance, as a reference control voltage. In the replacement initial operation mode, when the control voltage after performing the control so that the output voltage obtained from the toner concentration sensor by performing the toner concentration detection becomes the reference output voltage (3 V) stored in advance is within±1 V of the reference control voltage, the control voltage is updated. COPYRIGHT: (C)2006,JPO&NCIPI |
