Abstract: A registration system including both a primary tamping device and a secondary scuffing device. The scuffing device includes a scuffer arm, an extending/retracting device, a drive subsystem, and an engagement control device. In various exemplary embodiments, the secondary scuffing device is retracted. The scuffing device can thus be used, when required, to register a substrate in the process direction and then retracted enabling the side tampers to cross process register the substrates. In various exemplary embodiments, substrates of varying sizes and types can be registered into common sets using the systems and methods of this invention.

Abstract: A sheets sets compiling and stacking system for the output of a printer, in which the seriatim output of printed sheets may be accumulated and neatly stacked on a temporary sheets supporting system until the desired number of sheets for that set (e.g. all the pages of a collated document) is accumulated (compiled). The temporary sheets supporting system may then automatically open to drop each completed or compiled set of sheets, but with positive alternate side set clamping control against sheet scattering or skewing, dropping only one side of one set at a time, by a short distance, down onto a multiple sets stacking system, such as a self-lowering elevator stacking tray, so as to provide reduced set scattering or skewing of the sheets within the sets, and/or between sets.