Abstract: A sheet deposition device for the deposition of printed sheets on superimposed supports, where each support is provided with its own drive means for moving said support up and down between a deposition position, in which sheets can be deposited on that support, and a parking position, in which sheet deposition is not possible. Each support is also provided with detection means for detecting an obstacle in the space directly therebeneath, for example, sheets on a support directly therebeneath, said detection means delivering a first detection signal when the distance between the support provided with said detection means and an obstacle directly therebeneath is greater than a predetermined amount and said detection means delivering a second detection signal when said distance is equal to said predetermined amount.