The present invention relates to driving devices, wherein, control unit has detection determination unit, the high threshold set in the initial state and Low threshold are set in a manner of changeable as the threshold value for determining whether to obtain detection signal in the detection determination unit, if before carrying out driving processing, detection determination unit is made acquisition and is determined, then control unit is based on the judgement result, it carries out the low switching switched since high threshold to Low threshold and handles the driving processing up to, if after low switching processing, detection determination unit is made acquisition and is determined, then control unit stop the driving suspension processing of the driving of driving portion.
