| 摘要 |
PURPOSE:To control the supply of a developer by a program by driving a pump intermittently and holding the liquid level of a developer at a specific level, and driving the pump continuously and supplying the developer at the time of developer supply. CONSTITUTION:The liquid developer 136 put in a developer bottle 13 is supplied to the process head 54 of an electrophotographic device by a developer sucking pump 130. The motor 128 is driven a specific time after a photography button is pressed. The motor 128 is applied to a 24V voltage intermittently with a 50% duty ratio and the liquid level of the developer 136 is held at a position a little bit lower than a developer supply port 106. When the developer 136 is supplied to the head 54, the pump 130 is driven continuously to supply the developer. Thus, the supply of the developer is controlled by the program.
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