| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing the increase of a cost by reducing the number of terminals for an ASIC for controlling a high-voltage power source apparatus. <P>SOLUTION: The image forming apparatus includes; a detection voltage output means for outputting the detection voltage proportional to the output of the high-voltage power source; a multiplexer with an output stopping function; a triangular wave generating means for generating a triangular wave; an analog-digital conversion means for comparing the output of the detection voltage output means with the output of the triangular wave generating means and converting the output to a pulse; and a high-voltage power source control means for controlling the output of the high-voltage power source in accordance with a width of the pulse generated by the analog-digital conversion means. The image forming apparatus also includes a control part for counting the triangular waves and stopping the output of the multiplexer at a prescribed timing. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
