CTF
The CTF process is the ‘computer-to-film’ process in which the printing plates are not exposed directly, but an offset film is first exposed as an intermediate product, which then exposes the final printing plate.
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CTP
The CTP process is the ‘computer-to-plate’ process in which the printing plates are produced directly in a CTP imagesetter without the use of films. It is faster and more precise, but also more expensive than the classic CTF – ‘computer-to-film’ process