Donor roll coatings

摘要

A toner donor roll (42) for use in a development apparatus of a electrophotographic apparatus is disclosed. The donor roll (42) includes a conductive core (110) and a ceramic outer coating (112) over the conductive core (110). The ceramic coating is formed by thermal spraying a single homogeneous powder consisting of particles each of which contains a specific ratio of pure alumina and pure titania held together with an organic binder. <IMAGE>