Scanner device, image forming apparatus adopting the same, and skew adjusting method

The disclosed scanner apparatus, reading the image from the document to the reading portions material disposed an original conveying path and as to feed the document along the document transport path claim that is based on the transport direction of the original position on the upstream side of the reading member 1 register rollers and the first and the register motor arranged in the width direction of the register rollers and the document being driven to the second register rollers and the first register roller being located apart in the width direction from the first register roller, the second register roller and a main motor for driving.