Printing machine discharge device including pluralities of emitters for different degrees of image receiver charge manipulation

Embodiments of the subject invention relate to improved electrophotographic apparatus and method for controlling electrical memory effects in photoreceptors. More specifically, embodiments relate to apparatus and techniques for substantially reducing a form of electrical fatigue, occurring in such photoreceptors, that cause a "residual image" of a previous document in subsequent prints of a different document. A discharge device usable in an electrostatographic printing machine uses a plurality of emissions to discharge an image receiver, such as a photoreceptor, of the printing machine. The discharge device can be used as a charge erase device, a reconditioning device, an imaging device, or a combination of these. In embodiments, the different emissions come from different groups of emitters within the device, such as from rows of emitters or from groups interspersed within a single row. In other embodiments, at least some of the emitters are tunable and can emit more than one type of emissions. For example, tunable LEDs could be employed in the device.