A technology that allows for the delivery of digital data directly to a plate for printing. CTP efficiency eliminates conventional films and stripping to significantly reduce prepress materials and costs, and allow for significant productivity benefits over other commercial printing solutions.
Computer-to-Plate or CTP describes a system in which the use of desktop publishing software, electronic prepress workstations, and platesetters allows the imaging of metal plates for any format of press without the use of film, stripping or traditional platemaking. This process results in lower costs while shortening the amount of time needed to get a job on the press.
A process by which data from the computer is imaged directly onto the printing plate without using film as a transference medium, thus reducing costs, though the printing foils used in this process wear out faster than conventional printing plates. Depending on the process, in addition the foils cannot always be stored once they have been printed. New materials that use thermal energy instead of visible light for imaging have made it possible to process film in daylight conditions and to develop film without using chemicals.