OPERATION DEVICE AND IMAGE FORMING APPARATUS

摘要

<P>PROBLEM TO BE SOLVED: To provide a device allowing a user to recognize a high possibility of continuously pressing a push-button abnormally long. Ž<P>SOLUTION: An operation device 14 includes: a key group 22 constituted of a plurality of keys; an input detecting section 31 for detecting that a key is depressed; a measuring section 32 for measuring a time of continuously pressing a key when the input detecting section 31 detects that the key is depressed; and a warning processing section 34 for generating an alarm from a buzzer 24 or displaying a caution on an LCD panel 27 if a measured value of the measuring section 32 reaches a first threshold. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž