Patent ID: 7289252

Claim:
A combination of a flat-bed scanner and a sheet feeder, the flat-bed scanner and the sheet feeder proceeding sheet-feeding scanning, the flat-bed scanner comprising: a first glass window arranged on the flat-bed scanner so as to support documents coming from the feeder, the first glass window including a top surface and a bottom surface, the top surface facing the feeder and the bottom surface facing the interior of the scanner, and a second glass window arranged on the flat-bed scanner and adjacent the first glass window, the second glass window including a top surface and a bottom surface, the top surface of the second glass window facing the feeder and the bottom surface of the second glass window facing the interior of the scanner, a height difference between the top surface of the first glass window and the top surface of the second glass window; wherein the height difference is formed because the first glass window and the second glass window are located at different positions.