An Overview of Applications for Polyurethane Materials in EP Systems

摘要

This paper explores the many applications of polyurethane materials, both conductive, and non-conductive, in electrophotographic systems. An overview of general urethane chemistry is provided along with general manufacturing processes for these materials. Specific applications for polyurethane materials in digital printing are explored in detail. These applications would cover charge and developer rollers, cleaning blades, particle transfer rollers, intermediate toner transfer, squeegee rollers, paper transfer, paper and media feed and use of high-density micro-cellular foam rollers for high-speed high reliability feed. In addition, novel uses such as multi-durometer rollers, an-isotropic rollers and highly conductive loaded silicones for EMF shielding are discussed. This paper combines key overview aspects of three papers previously presented at NIP-16, 17 and 18 by this author but also expands on the functional characteristics that make polyurethane the material of choice in the above mentioned applications.