Browse Prior Art Database

Original Publication Date: 1995-Dec-31
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal


A high capacity, elevator unload, stackerlfinisher 10 is shown in the Figure that uses one tray 12 to compile sheets for stapling at 14, as well as, perform high capacity stacking. A conventional elevator (not shown) moves tray 12 vertically to unload stapled sets. Finisher 10 is compatible with a left exit N to 1 or right exit 1 to N processor 8 and incorporates gravity drop stacking instead of using a gate to release stapled sets as is conventionally done. To release stapled sets 11, tray 12 is simply driven by the elevator down to an opening in registration wall 16 and gravity deposits the sets 11 onto tray 20. This allows the stackerlfinisher to perform all of the functions of a three tray system with only two trays. Several methods could be used to register sheets for stapling, including tamping and using a paddle wheel. If a paddle wheel were mounted just under the tray entrance nip 9, extremely consistent stacking of large numbers of ll", A3 or A4 sheets could be achieved by incrementing the elevator down to maintain constant paddle wheel penetration.