Patent ID: 6223011
Filing Date: 2001-04-24
Classification: G03G

Abstract:
An electrostatographic printing machine comprising:(a) a photoreceptor having an image area;(b) at least one charging apparatus and at least one imaging apparatus that create a plurality of complementary electrostatic latent images on the image area to correspond to an image wherein the creation of the plurality of the complementary electrostatic latent images involves a substantially uniform charging and an imagewise discharge of the image area for each of the complementary electrostatic latent images and results in a variation in the quantity of trapped charges among different portions of the image area, thereby leading to differential residual voltage among the different portions of t he image area;(c) a plurality of complementary electrostatic latent image developing apparatus;(d) a charge erase device which is a light source that directs charge dissipation emissions at the photoreceptor wherein the charge dissipation emissions have a first spectral content that reduces the quantity of the surface charges; and(e) a reconditioning light source that directs light at the photoreceptor wherein the light has a second spectral content that reduces both the quantity of the trapped charges and the variation in the quantity of t he trapped charges among the different portions of the image area, thereby creating a more uniform residual voltage among the different portions of the image area.