| 摘要 |
<p>PURPOSE:To obtain the appropriate paper feeding height of transfer paper regardles of the quantity of the transfer paper stacked in a paper supply cassette by providing a driving motor for lifting a bottom plate, a motor stage speed switching means, a transfer paper upper limit detecting means and a bottom plate height detecting means. CONSTITUTION:A motor stage speed switching means 4 capable of switching voltage for driving a motor to two stages or more, a transfer paper upper limit detecting means 5 for detecting the upper limit of transfer paper for appropriate paper supply, a bottom plate height detecting means 6 for detecting the height of a bottom plate, a cassette size detecting means 7 and a paper end detecting means 8 are respectively connected to a CPU 1 to be a main control circuit, through an I/O port 2. The voltage for driving the motor 3 in order to lift the bottom plate according to the quantity of the stacked transfer paper is switched to two stages or more to obtain the appropriate paper feeding height of the transfer paper regardless of the quantity of the transfer paper stacked in a paper supply cassette.</p> |
