Patent ID: 6016207
Filing Date: 2000-01-18
Classification: H04N

Abstract:
A method to calibrate a facsimile machine including a document feed path, a leading edge sensor and a scan mechanism, the method comprising the steps of:feeding a calibration chart into the facsimile machine to be calibrated;detecting a leading edge of the calibration chart;advancing the calibration chart a preset amount along a document path after the leading edge has been detected;after the calibration chart has been advanced by the preset amount, causing the facsimile machine to commence to scan the calibration chart and thereby produce a stream of output data;sending the stream of output data to an associated computer;causing the associated computer to determine where on the calibration chart relative to the leading edge the facsimile machine began scanning by monitoring the stream of output data;causing the associated computer to send a correction offset value to the facsimile machine if the position where the facsimile machine began scanning the calibration chart was not at a predetermined position, the offset value determined by the association computer to adjust the preset amount to compensate for tolerance stacks-ups affecting the relative positions of the edge sensor and the scan mechanisms; andcausing the facsimile machine to use the correction offset value to adjust where on a document the facsimile machine begins scanning.