Back-up roller with reduced mass

摘要

A back-up roller (51) for use in the fusing portion of an electrophotographic process is disclosed. This back-up roller has an inner cylindrical metal core (71), an outer hollow cylindrical metal shell (72) surrounding the core, and a plurality of metal ribs (73) running lengthwise between and attached to the core and the shell. The outer surface of the shell is coated with a layer (74) of a rubberized material. This back-up roller, when used in the fuser portion of an electrophotographic process, reducing the condensation of moisture on its surface, thereby effectively eliminating fuser stalls.