HIGH FORCE WIDE FRICTION BELT DESIGN
Original Publication Date: 1987-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
For an over-platen frictional document sheet transport for a copier, there is provided here a single wide document belt with circumferential undulations rather than a flat configuration. The amplitude of these undulations may be somewhat less than .1 inches and approximately three such undulations or smooth "wrinkles" are provided, one along the center of the belt to engage the center of the document sheets, and approximately two more symmetrically located on either side of the first. All extend along the direction of movement of the belt. This configuration of the belt may be provided by providing correspondingly undulated rings or ridges extending from the surface of the otherwise cylindrical drive and idler rollers supporting the endless belt loop, to correspondingly deform the belt. These belt undulations increase the document sheet engaging normal forces in the undulated areas, and thereby provide a more balanced and more skew-resistant sheet drive and a higher total frictional sheet driving force.