DUAL RATE LEAF SPRING
Original Publication Date: 1990-Aug-31
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
In a xerographic reproduction machine, the descent of a stacking tray is controlled by a leaf spring which has a larger spring constant when the tray is more heavily loaded. The arrangement prevents the drop height for incoming documents (i.e., the distance through which incoming documents fall onto the top of the stack) from increasing to an unacceptable extent when the tray is carrying large heavyweight documents. If the drop height is not controlled, incoming documents have an increasing tendency to scatter the stack as the drop height increases.