TRANSFER DEVICE OF DEVELOPING SYSTEM

PURPOSE: To provide a carrying device provided with the improved coating of a donor roll capable of realizing control in the case of attaining a desired charge relaxation time constant by improve conductivity uniformity and the molecular dispersion of conductive induction components in the coating. CONSTITUTION: The coated donor roll 42 includes 1st and 2nd electrode sets 92 and 94. The (interdigitized) active electrodes 94 assembled at regular intervals, the passive electrodes 92 assembled at regular intervals and a magnetic roller 46 are mounted in the chamber 76 of a housing 44. The donor roll includes a core and a dielectric overcoating 70 for coating the core and containing charge transporting molecules or a monomer such as diamine or the like dispersed in binder such as polycarbonate and at least a kind of oxidant, for example, trifluoroacetic acid.