Linear motion multiple stapling system for office machine

A sheet stacking, registration and set fastening system for stacking, registering and fastening stacked sets of plural printed sheets fed from a reproduction apparatus onto a stacking area of a defined area stacking tray, comprising:

• a vertically extending laterally movable sheet stacking edge registration system adjacent at least one edge of said stacking tray for edge registering sheets stacked in said stacking tray in an edge registration area;
• a set fastening system laterally movable parallel to said edge registration area of said stacking tray to fasten a stack of sheets edge registered in said stacking tray in plural different fastening positions;
• said sheet stacking edge registration system having plural movable components providing access therethrough to said stacking tray by said set fastening system;
• said set fastening system continuously extending into said stacking area of said stacking tray through said edge registration system for said plural different fastening positions;
• said sheet stacking edge registration system being automatically movable in coordination with said movement of said set fastening system to not obstruct said set fastening system for said plural different fastening positions yet maintain registration of a stack of sheets in said stacking tray stacking area at said edge registration area thereof with at least a portion of said plural components of said registration system.