| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a user to use the devices at ease by making it possible to hold the touch surface of a touch panel clean and sanitary according to the state of a transaction by the user. SOLUTION: When the user depresses the touch face of the touch panel in a transaction, a control part decides whether or not the depressed key is a key at a previously set place (ST1). When it is decided that the depressed key is at the set place in ST1, a counter counts up a frequency of depression (ST2). When the count value of ST2 reaches a given value (ST3), a sheet feed motor is driven for a certain time to convey a protection sheet, whose old part is wound to set a new part opposite the touch face of the touch panel, thus completing the cleaning of the touch panel (ST4).</p> |
