Electrophotographic development apparatus.

摘要

An apparatus which develops an electrostatic latent image recorded on a photoconductive member (10) employed in an electrophotographic printing machine having a finite, usable life. The apparatus employs a developer material (60) comprising carrier granules and toner particles. The developer ages during the life of the electrophotographic printing machine. A continuous supply of carrier granules is furnished from discharging unit 66 to the developer material as toner is replenished. The addition of these carrier granules extends the useful life of the developer material so as to correspond to at least the useful life of the electrophotographic printing machine.