Direct Positive Copy - Reproduction of an original created without negatives.
Copying technically known as xerography and photostat are direct positive processes.
Dirty Copy- Copy which contains typographic errors or type that is poorly set. It may also be dirty because it has dust, scratches or incomplete images. Refers to the number of reproductions which have been made of an original. It can also be used to describe the printing process. A finished reproduction of a photograph or other continuous-tone image which converts the image into a series of dots.