Patent ID: 6330074
Filing Date: 2001-12-11
Classification: H04N

Abstract:
An digital copier, comprising:a photoreceptor moving in a process direction;a raster output scanner including a laser source that produces a laser beam and a rotating, multifaceted polygon for reflecting said laser beam as a sweeping beam across said photoreceptor so as to produce a plurality of output scan lines;a start of scan detector for detecting said sweeping beam and for producing a plurality of start of scan signals, wherein the time between start of scan signals depends upon the rotation of said multifaceted polygon; andan input scanner for digitizing an image on an original source, said input scanner including a light source for radiating light onto the original source; an array of photosensitive elements for producing a plurality of charging currents, wherein each current depends upon the light reflected from a pixel area of the image on the original source; and an integrator for integrating said plurality of charging currents for an integration period;wherein said integration period is a function of the time between start of scan signals.