Patent ID: 6945921
Filing Date: 2005-09-20
Classification: G03G

Abstract:
1. Roller for a printer, fax machine or copier, said roller being intended to be in contact with toner particles, said roller being provided with at least one carbon black containing resin layer, said resin layer being cured and having a thickness of less than 200 μm, in which the carbon black has the form of aggregates of carbon black particles, said aggregates having a weight average size lower than 30 μm, a DBP absorption of more than 110 ml/100 g and a BET-surface area greater than 250 m in which the carbon black aggregates are precoated with a precoating comprising an amino silane compound so as to form precoated carbon black aggregates, and in which the precoated carbon black aggregates are substantially homogeneously dispersed in the resin, whereby the resin layer comprises more than 50% by weight of said precoated carbon black aggregates.