US Patent 7760217 Imaging methods and imaging devices

Imaging methods and imaging devices are described according to some aspects. According to one aspect, an imaging method includes defining a plurality of first portions of a layer of a marking agent corresponding to an image to be formed, removing the second portions of the marking agent after the defining, increasing a charge density of the first portions of the marking agent after the removing, and transferring the first portions of the marking agent after the increasing.