Composition for a ceramic coated detoning roll for use in an electrostatographic cleaning apparatus

摘要

A detoning roll having a ceramic outer coating for removing residual toner particles from a cleaning reproduction machine. The ceramic outer coating consists essentially of a suitable mixture of alumina and titania by weight giving the detoning roll a desired resistivity within a range of 2.8x107-2.10x109 (Ohm-cm), a discharge time constant of greater than 600 microseconds, and a dielectric constant within a range of 12-24 at 100 KHz.