COATING PROCESS FOR LAYERED PHOTORECEPTOR
Original Publication Date: 1992-Feb-29
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
Layered photoreceptors, consisting of a thin charge generation layer (CGL) and a thick charge transport layer (CTL), have many advantages over single layer structures. A key to the performance of a layered photoreceptor is a very thin charge generation layer to reduce the distance the photogenerated charge must move and the amount of photogenerated charge that can be trapped in this layer. However, to function as a good generator, the CGL layer must also be optically thick to absorb most of the light during imagewise exposure. These two constraints require the material of the CGL to be highly absorbent, which favors pigments with crystalline forms.