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