an electrostatic printing process for copying text or graphics whereby areas on a sheet of paper corresponding to the image areas of the original are sensitized with a charge of static electricity so that, when powdered with a toner carrying an opposite charge, only the charged areas retain the toner, which is then fused to the paper to make it permanent.
a photocopying process in which an electrostatic image is formed on a selenium plate or cylinder. The plate or cylinder is dusted with a resinous powder, which adheres to the charged regions, and the image is then transferred to a sheet of paper on which it is fixed by heating
