Paper discharge device

Provided is a paper discharge device (1) capable of efficiently collecting the large amount of the paper, and of allowing the paper in the waiting state to wait without being brought into contact with the collected paper until the processings such as printing are ended. The paper discharge device (1) includes: a waiting path (43), one side of which is connected to the input port (40) and another side of which is connected to the discharge port (41); a collection path (44), one side of which is connected to the waiting path through a merged portion (48) and another side of which is connected to the collection chamber (47); conveyance mechanisms (45) for conveying the paper which was conveyed through the input port until the discharge port in a forward direction, and for conveying, after lapse of a given period of time after the conveyance of the paper, the paper in a reverse direction through the merged portion to feed into the collection path; and an input mechanism (46) provided in the collection path, for conveying the paper fed from the waiting path toward a downstream side to throw into the collection chamber, in which the input mechanism includes one side of rollers and another side of rollers which rotate while sandwiching the paper between the one side of rollers and the another side of rollers, and conveys the paper while forming folds (M) across a total length of the paper along a conveying direction by the both rollers.