A copier includes an image member having a dielectric surface and a write head for writing a pattern of electrostatic image dots on the surface. A controller controls the writing head in response to digital data representing an original document so that the image dots of the pattern may have variable...http://www.google.ca/patents/US5325120?utm_source=gb-gplus-sharePatent US5325120 - Electrostatic reproduction apparatus having a dielectric ink-phobic imaging member and field-emission write head
