Sheet collection devices and sheet processors utilizing same

A sheet processor apparatus adapted to place images of a document onto a copy sheet and transport the copy sheet to an exit portion of the processor, nip means positioned within said processor and adjacent said exit portion of said processor and adapted to transport the copy sheet through said exit portion and into a registration stop that aligns the edges of the sheet within a sheet collection device, said nip means including one or more brushes adapted to serve as a means for guiding the copy sheet through said nip means and subsequently engage the trail edge of the copy sheet and drive it out of said exit portion and into said registration stop of said collection device, and wherein said brushes are adapted to wipe down against trail ends of copy sheets stacked in said collection device to compact the copy sheets in order to increase the capacity of said collection device for receiving upcurled sheets.