Patent ID: 6190771
Filing Date: 2001-02-20
Classification: G03G,Y10T

Abstract:
A fusing assembly for fixing toner to a receiver comprising a fuser roller and a pressure roller forming a fixing nip, a metering roller, means for applying a polymeric release agent to the metering roller and a release agent donor roller for receiving polymeric release agent from the metering roller and applying it to the surface of the fusing roller, the release agent donor roller comprising an outer layer including a silicone material selected so that its swelling in 1000 cSt. poly(dimethylsiloxane) is less than 6% by weight, such silicone material including:(a) a crosslinked poly(dialkylsiloxane) incorporating an oxide, wherein the crosslinked poly(dialkylsiloxane) has a molecular weight-average before crosslinking of about 1,000 to 90,000;(b) one or more crosslinked poly(siloxane) selected from the group consisting of poly(diarylsiloxane), poly(arylalkylsiloxanes) or mixtures thereof wherein the disrylsiloxane) or poly(arylalkylsiloxane) has a weight-average molecular weight before crosslinking of about 1,000 to 90,000;(c) a silicone T-resin;(d) at least one silane crosslinking agents; and(e) wherein the weight-average molecular weight of the mixture of poly(dialkylsiloxane) and poly(siloxane) is about 5,000 to 80,000.