Modified donor roll

Details Modified donor roll Modified donor roll

1992-12-04

1994-01-11

Moses, R. L.

Photocopying

Contact printing

Light boxes

355285, 219216, 432 60, 118258, G03G 1520

Patent

active

052786170

ABSTRACT:
A release agent management system incorporated in an electrophotograpic printing machine having a heat and pressure fuser assembly with stripper fingers to aid in the removal of fused copies from the fuser roll. The fuser assembly includes a heated fuser roll, a pressure roll, a sump containing a quantity of release agent, a metering roll and a donor roll. The metering roll is immersed in a quantity of release agent and is in contact with the donor roll. The donor roll acts as the transport to transfer release agent from the metering roll to the heated fuser roll. The surface of the donor roll is provided with cutout grooved areas corresponding to the location of the stripper fingers on the fuser roll. These grooves result in a lesser amount of release agent being applied to the fuser roll in the area adjacent the stripper fingers. This lesser amount of release agent applied in the stripper finger area minimizes release agent buildup under the stripper fingers and the subsequent copy degradation due to transfer of release agent to the copies.

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