{HEAD ~ Resolution} is switchable between 600 dpi and {TAIL ~ 300 dpi} in the first embodiment, and between 600 dpi and 400 dpi in the second embodiment 
is switchable between
{ HEAD ~ Resolution } is switchable between 600 dpi and { TAIL ~ 300 dpi } in the first embodiment , and between 600 dpi and 400 dpi in the second embodiment
HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH