Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07
There is shown and described an improved document separator roller which provides a more reliable separation while minimizing the opportunity for misfeed. Fig. 1 shows a D-shaped roller 2 just as it contacts a stack 4 of documents in a tray. The displacement 6 of a point on the roller making contact with the stack 4 is broken into two components: motion in the drive direction 7 and motion in the deflection direction 8. A buckle develops in the topmost sheet of stack 4 as a result of friction caused by displacement in the drive direction. Displacement in the deflection direction transfers a normal load from the interface of the leading edge of the document with a corner tab restraint (not shown) to the drive roll document stack interface.