Particulate Fillers for Fuser Roll Coatings
Original Publication Date: 1985-Nov-01
Included in the Prior Art Database: 2005-Feb-19
Fuser rolls used in electrophotographic reproduction processes should have (a) good surface properties such that the toner is fused to the paper without offset to the fuser roll and (b) should be capable of operating at elevated temperatures (N175ŒC) for several hundred thousand copy cycles. Silicone elastomers presently used for fuser rolls have good release properties but marginal thermal stability. Materials like iron oxide, alumina, graphite and silica have been added as filler materials to improve the thermal conductivity and, thus, reduce the temperature gradient across the roll. However, these materials with high surface energies have a deleterious effect on the release properties of the roll.