| 摘要 |
PROBLEM TO BE SOLVED: To prevent a light source of image reading means from being turned on or off incorrectly due to noise without providing a component for removing noise such as static electricity.SOLUTION: A CPU 20 creates a plurality of control signals for controlling turning on and off of an LED lamp 46 so as to satisfy at least one of a first condition in which respective transmission paths of the control signals are separated from each other by a predetermined distance or more, and a second condition in which respective transmission formats are different from each other, and outputs the plurality of control signals to the respective transmission paths. A logical product circuit 38 and a drive circuit 42 control turning on and off of the LED lamp 46 on the basis of the plurality of control signals input through the respective transmission paths. |
