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