The photoinduced discharge of single-layer organic photoconductors involves photogeneration in the bulk, transport requirements for both holes and electrons, and bimolecular recombination during transit. In this paper, the impacts of these features on the formation of latent solid-area and one-pixel line images with laser exposure are mathema-tically analyzed. The results are compared with the case of images formed on dual-layer organic photoreceptors. A new insight into the advantage regarding image resolution is discussed.