photostat

A photographic device for making positive or negative copies of graphic matter.

A copy made with such a device.

A photocopy, especially one made by a Photostat machine

positive (black on white) or negative (white on black) reproduction of printed matter or artwork made on a photostat machine, which uses photographic paper instead of a transparent negative, and uses a prism to render the paper negative readable instead of reversed.

To make such a photocopy.