Patent Number: 6,241,245

Title: Sheet handling system for minimizing surface defects

Abstract: Apparatus for transporting sheets in a longitudinal direction includes an improvement for reducing the imparting to the sheet material of friction, static charge, and foreign deleterious material while substantially minimizing the burnishing of the surface of the sheets. To this end, a plurality of elongated sheet supporting rib members project outwardly from a guide surface, extend diagonally relative to the longitudinal direction, are all of uniform height above the sheet guide surface, and are of uniform cross section. The sheet supporting rib members are so dimensioned and positioned that any random element of a sheet being fed in the longitudinal direction through the apparatus crosses only one of the sheet supporting rib members. Actually, a plurality of first sheet supporting rib members extend diagonally in a first direction and another plurality of elongated second sheet supporting rib members extend diagonally in a second direction which is transverse of the first direction. The incidence angle between the longitudinal direction and each of the sheet supporting rib members is in the range of about 5.degree. to about 30.degree. and, preferably, in the range of about 10.degree. to about 20.degree.. A drive roll mechanism may be provided for engaging the sheets in the region of the sheet supporting rib members.

Inventors: Hollar; Thomas C. (Penfield, NY), Powley; Wayne C. (Ontario, NY)

Assignee: Xerox Corporation

International Classification: B65H 29/52 (20060101); B65H 029/20 ()

Expiration Date: 06/05/2018