Patent ID: 6724506
Filing Date: 2004-04-20
Classification: H04N

Abstract:
An imaging system, comprisingan imaging subsystem for forming an image on a sheet, a tray for holding a supply of sheets; a ramp for directing a sheet from the tray into a paper path; a drive assembly including a movable roller configured to move the sheet into the paper path by moving a top sheet of a supply of sheets in the tray to the ramp; a sensor in the vicinity off the paper path and configured to detect a sheet traveling in the paper path from the tray and to provide an output signal in response thereto; and a processor connected to the drive assembly and the sensor; the processor configured to control movement of the roller, to receive and store an initial sheet level value, to receive the output signal from the sensor and to calculate a time, t, from activating the drive assembly to receiving the sensor output signal, to calculate a distance d from a known angular velocity V of the roller and time t and to accordingly adjust the initial sheet level value.