{HEAD ~ This frequency modulation apparatus} is used in an image formation apparatus having {TAIL ~ an image bearing body} to be scanned by a laser beam 
{ HEAD ~ This frequency modulation apparatus } is used in an image formation apparatus having { TAIL ~ an image bearing body } to be scanned by a laser beam
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH