Abstract: The roller transfer corona is an apparatus which eliminates the problem of image voids which exists when folded or creased paper is used as the copy paper in a xerographic copy machine. The apparatus comprises contact means, such as a coated push roller, for physically engaging and forcing the folded copy paper against the photoconductor element of the copy machine in combination with corona means, such as a corona wire, located adjacent to and separate from the contact means, for effecting the transfer of toner particles from the photoconductor element to the copy paper.