Printer Types
Printers can be divided into two types according to indicate the way in which the raw stock is exposed, either in contact with the original, or by optical projection, in which an image of the original is formed on the unexposed film by a copying lens.
A further division of types is made according to how the film moves: continuous movement, where both original and raw stock are moved at constant speed, or intermittent where the two strips are moved one frame at a time and held stationary for the period of exposure [also called step].
Printers also come as dry or wet depending on whether the original film,
when being exposed in the printer gate is in a liquid or is dry.
