Wednesday, May 13, 2009

US Patent 7531277 - Self-erasing photoreceptor containing electroluminescent nanoparticles

In xerography processes a photoreceptor is a necessary component in forming images to be printed. this patent from Xerox takes advantage of the electrical conductivity and optical transparency of carbon nanotube material to achieve improved photoreceptors provided with self erasing. Claim 1 reads:

1. An electrophotographic photoreceptor comprising:

a conductive layer comprising a plurality of electroluminescent nanomaterials, wherein the plurality of electroluminescent nanomaterials comprises a plurality of carbon nanotubes;

a first contact electrically connected to a first edge of the conductive layer and an electrical ground;

a second contact electrically connected to a second edge of the conductive layer and D.C. power supply; and

a photosensitive layer disposed over the conductive layer, wherein the photosensitive layer comprises a charge generation material and a charge transport material.