Automatic sheet-feeding scanner having non-linear paper path

An automatic sheet-feeding scanner, comprising:

• a platen assembly, comprising a scan platen, for supporting a document;
• a sheet feeder, wherein the platen assembly and the sheet feeder are combined together to form a non-linear paper path, which has a scan region, and the sheet feeder comprises:
• a feeding mechanism for feeding the document into the paper path;
• a transporting mechanism for transporting the document from the feeding mechanism to the scan region, wherein the transporting mechanism comprises two rollers, disposed opposite each other and upstream of the scan region and one of the two rollers of the transporting mechanism is mounted in a receptacle of the platen assembly, the document is transported in a tangential direction of a nipping point between the rollers, and the tangential direction of the nipping point between the rollers is substantially parallel to a scan plane of the scan platen in the scan region;
• and
• a discharging mechanism for transporting the document out of the paper path from the scan region;
• and
• a scanning module, movably disposed in the platen assembly, for acquiring an image of the document being transported past the scan region.