| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress deterioration of a touch panel of a display device that displays virtual numeral input keys for inputting a set value. <P>SOLUTION: An image forming apparatus 1 has a touch panel 71b on a display part 71 for displaying an operation screen. When an instruction to input numerals is detected on the operation screen, the image forming apparatus 1 displays virtual ten keys on the operation screen. The image forming apparatus 1 includes a virtual ten-key display control part 2c which detects, after detecting the instruction operation, a position area of touch operation to the touch panel 71b, and displays virtual ten keys in an area corresponding to the detected position area. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
