The charge transport model of liquid immersion development (LID) is extended for consideration of line-pair images. The transfer of modulation from the image-wise charge distribution on the photoreceptor surface to the developed toner mass distribution is examined as a function of line-width. The line-width dependence of the modulation transfer is found to be weaker than that previously expected for electrostatic images, even at line-widths of small multiples of the receptor thickness. This indicates a favorable image resolution for LID that can be attributed to a new reason that is inherent in the electrophoretic development process, and is independent of the toner size or the development gap size.