Patent ID: 8005390
Filing Date: 2011-08-23
Classification: G03G

Abstract:
1. A method comprising: charging latent images of source patches on a photoreceptor printing region; transferring marking material from a donor roll to said photoreceptor, said source patches causing marking material to be removed from areas of said donor roll to create marking material-depleted regions corresponding to said source patches and leaving ideal regions on said donor roll between said marking material-depleted regions, said ideal regions being positioned where no marking material is removed by said source patches; reloading said marking material-depleted regions with marking material using a magnetic brush to create reloaded regions on said donor roll; charging latent images of reload target patches and ideal target patches on said photoreceptor printing region, said reload target patches being located on said photoreceptor one donor roll circumference from said source patches, and said ideal target patches being located on said photoreceptor between said reload target patches; continuing said transferring of said marking material from said donor roll to said photoreceptor to transfer said marking material from said reloaded regions to said reload target patches and from said ideal regions to said ideal target patches; evaluating a reload function of said donor roll and said magnetic brush by comparing characteristics of said marking material on said reload target patches with marking material on said ideal target patches; and altering a printing image charge to maintain said reload function within a predetermined range.