Provided is a transporting device including: upstream-side upper and lower belts that transport a signature; downstream-side upper and lower belts that communicate with the upstream-side upper and lower belts, that run at a slower speed than that of the upstream-side upper and lower belts, and that receive the signature from the upstream-side upper and lower belts to transport the signature; and slowdown wheels including stoppers that come out on the transporting path of the signature between the downstream-side upper and lower belts so as to abut on the forward edge portion of the signature in the transporting direction thereof, the transporting device provided with pressing cams including pressing surfaces that press the downstream-side lower belt towards the downstream-side upper belt while the stoppers of the slowdown wheels abut on the forward edge portion of the signature in the transporting direction thereof.