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