In this way, the exposure device of the fourth aspect is provided with the pulse width modulating device of {HEAD ~ the present invention} which enables an improvement in the bit resolution of {TAIL ~ the pulse width modulating signal} 
In this way , the exposure device of the fourth aspect is provided with the pulse width modulating device of { HEAD ~ the present invention } which enables an improvement in the bit resolution of { TAIL ~ the pulse width modulating signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL