US Patent 8233017 - Electrostatic printing with nanocarbon image generator

http://www.freepatentsonline.com/8233017.html

Xerox continues its efforts in using nanostructured materials to improve the operability of electrophotographic printers. This latest patent teaches using graphene or carbon nanotubes in forming an electrostatic image for smaller, more energy efficient printers. Claim 1 reads:

1. An electrostatic latent image generator comprising:

a substrate;

an array of pixels disposed over the substrate, wherein each pixel of the array of pixels comprises a layer of one or more nano-carbon materials, and wherein each pixel of the array of pixels is electrically isolated and is individually addressable; and

a charge transport layer disposed over the array of pixels, wherein the charge transport layer comprises a surface disposed opposite to the array of pixels, and wherein the charge transport layer is configured to transport holes provided by the one or more pixels to the surface.