The printed products are slid upon the rearmost printed product in order to form a stack in a lying configuration. For this purpose there is provided a conveyor having at least one circulating chain at which entraining cams are mounted in a regularly spaced relationship. The entraining cams act upon the trailing edges of the printed products. A multiple number of pressing rollers press the stack, and these pressing rollers are mounted at a support disc. The support disc is driven for rotation synchronously with the conveyor chain. Each pressing roller in succession presses upon the rearmost product of the stack. The pressing roller which acts upon the stack is always located just in front of the leading edge of the product which is slid onto the stack and the pressing roller moves upwardly conjointly with the product in the product slide-on direction thereof. While the stack is thus always under compression, the next following product can be slid onto the stack without experiencing a pressing action.
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