- A method of reproducing images utilizing electricity and light. In it, a photoconductive surface, usually a drum, is positively charged with static electricity, then exposed to an optical image of that which is to be reproduced, forming a corresponding electrostatic pattern. A fine powder called toner, which has been negatively charged is spread over this surface, adhering only to the charged areas of the drum. The toner is then fused to the paper, which has been positively charged, forming the final image. Used, for instance, in laser printers and copy machines. Also called xerography.
- noun any form of photography such as laser printing and photocopying, that uses electricity rather than chemicals to transfer an image onto paper
- noun a general term for methods of recording optical images by means of light acting on a photoconducting insulator, static charge and an image created by a toner which is then fixed by heat or pressure