Patent ID: 8488209

Claim:
An image reader comprising: an original feeding section that sequentially feeds a plurality of originals sheet by sheet; a reading section that reads images on the fed originals at a reading position to output image data; a foreign matter detecting section that detects foreign matter existing at the reading position based on the image data output by said reading section during an original-to-original interval of the fed originals; a correcting section that corrects the output image data for the originals based on a detection result of said foreign matter detecting section; and a control section that controls said original feeding section and said reading section according to a history of the detection result of said foreign matter detecting section so as to selectively execute one of a first moving original reading mode with a first original-to-original interval of the fed originals and a second moving original reading mode with a second original-to-original interval of the fed originals longer than the first original-to-original interval, wherein, in the first moving original reading mode, said control section controls said original feeding section to feed each of the originals while being read by said reading section and controls said original feeding section to feed the originals at the first original-to-original interval, and wherein, in the second moving original reading mode, said control section controls said original feeding section to feed each of the originals while being read by said reading section and controls said original feeding section to feed the originals at the second original-to-original interval.