Patent ID: 8091884

Claim:
A transport device comprising: a feed unit that feeds transport subjects being loaded in a loading portion one by one in a transport direction; a protrusion amount detection unit that detects a protrusion amount of the transport subjects from the loading portion in the transport direction; and an overlap feed sign detection unit that detects a sign of occurrence of overlap feed of the transport subjects based on a detection result of the protrusion amount, wherein the feed unit includes a separating unit that gives a force opposite to the transport direction with respect to a transport subject, which is unintentionally fed along with a transport subject to be transported, at a separating portion so as to separate the unintentionally fed transport subject from the transport subject to be transported, and when the transport subject being loaded in the loading portion protrudes beyond the separating portion, the overlap feed sign detection unit determines that the separating unit is deteriorated based on the detection result of the protrusion amount.