Patent ID: 7052006

Claim:
A method for producing stacks of printed products provided with an additional sheet between sub-stacks thereof, comprising the steps of serially feeding printed products from a feed conveyor into a preliminary stacking compartment which is bounded at the bottom by a compartment base, and so that the printed products enter the preliminary stacking compartment from above the compartment, sequentially closing and opening the compartment base so that a series of sub-stacks are formed in the preliminary stacking compartment and individually dropped into a final compartment which is located below the preliminary stacking compartment, feeding at least one additional sheet, which is visually distinct from the printed products, after at least one sub-stack has been formed in the preliminary stacking compartment and before a further sub-stack is dropped upon the one sub-stack in the final compartment so that the additional sheet ends up located between the one sub-stack and the further sub-stack, and wherein the feeding step comprises feeding the additional sheet laterally into the preliminary stacking compartment through a side of the compartment and at a location immediately above the compartment base so that the further sub-stack is formed upon the additional sheet.