Original reading apparatus

An original reading apparatus, comprising:

• a feeding portion which feeds an original put on an original tray one by one to a conveyance path;
• a conveyance portion which conveys the original along the conveyance path;
• a discharge portion which discharges the original conveyed along the conveyance path onto a discharge tray;
• a driving device which drives the conveyance portion;
• a first reading portion which reads a first face of the original conveyed along the conveyance path;
• a first sensor which is disposed at an upstream of the first reading portion in a conveyance direction of the original and detects the original;
• a second sensor which is disposed at a downstream of the first reading portion in the conveyance direction of the original and detects the original;
• a leading edge detection portion which detects reaching of a leading edge part of the original to the first reading portion from image data of the first face read by the first reading portion;
• and
• a controller which stops the driving device when the second sensor does not detect the original even though the original is conveyed by a first amount or a second amount which is smaller than the first amount from when the original is detected by the first sensor,
• wherein the first amount is set when the leading edge detection portion detects the leading edge part of the original from the image data of the first face, and the second amount is set when the leading edge detection portion does not detect the leading edge part of the original from the image data of the first face.