A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color.
LOCE, ROBERT P.;BANTON, MARTIN E.;LAMA, WILLIAM L.;CIANCIOSI, MICHAEL S.;FETH, SUSAN E.;GARCIA, KEVIN J.;WU, PETER K.;GIRMAY, GIRMAY K.;SWANBERG, MELVIN E.
