Photographic printing is the process of producing a final image on paper for viewing, using
chemically sensitized paper. The paper is exposed to a photographic
negative, a positive
transparency (or slide), or a
digital image file projected using an
enlarger or digital exposure unit such as a
LightJet printer. Alternatively, the negative or transparency may be placed atop the paper and directly exposed, creating a
contact print. Photographs are more commonly printed on plain paper, for example by a
color printer, but this is not considered "photographic printing".