The upper end of each paper punch (19) is open and provides an exit for the paper scrap into an upper storage cavity for containing the scrap.The cavity is in a support (03), having a vacuum connection, and is connectable to a vacuum apparatus for removal of the paper scrap. A device for invalidating planar security documents, the device having a horizontal base plate (9) onto which objects (14) to be invalidated are placed, and die plates (13, 17, 18) which are vertically movable and parallel to said base plate, and having perforating means supported on the base plate and the die plates, a drive mechanism by which the die plates can be displaced up and down, wherein the perforating means comprises at least one cutting bushing (23) with a hollow paper punch (19) interacting with each cutting bushing in order to displace the paper scrap in the paper punch, wherein the upper end of each paper punch (19) is open and wherein an exit for the paper scrap is directed upwardly, directly into an upper storage cavity for containing the scrap, the cavity being in a support (03), having a vacuum connection, and being connectable to a vacuum apparatus for removal of the paper scrap.
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