Vacuum Belt Transport
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
The above drawing shows a cross-section of an improved vacuum transport belt suitable for transporting a document relative to the document platen of a convenience copier. The system includes a vacuum manifold with a supply plenum therein. A plurality of supply orifices interconnect the supply plenum to a plurality of vacuum pools. The vacuum belt rides on the vacuum pools, and vacuum to the surface of the belt is supplied through a plurality of vacuum holes in the belt. When the pool area is covered by a document, the pool pressure 10 is equal to the supply pressure 12, and when the pool area is exposed, pool pressure 10 is approximately equal to atmospheric pressure.