A method and apparatus for determining the charge to mass ratio of {HEAD ~ electroscopic toner particles} of the type used in {TAIL ~ electrostatographic recording} to develop electrostatic images 
A method and apparatus for determining the charge to mass ratio of { HEAD ~ electroscopic toner particles } of the type used in { TAIL ~ electrostatographic recording } to develop electrostatic images
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH