This toner mass information, together with certain toner constants and {HEAD ~ known parameters}, is used by the logic and control unit to calculate {TAIL ~ the toners charge} to mass ratio 
This toner mass information , together with certain toner constants and { HEAD ~ known parameters } , is used by the logic and control unit to calculate { TAIL ~ the toners charge } to mass ratio
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH