What do CTF and CTP mean in the printing press?

CTF in printing machine is film printing; CTP is a plate-making technology, in which figures or pages edited in CEPS or DTP are directly transferred to the printing plate.

Compared with CTF, CTP reduces photographic film and its developing chemicals; Technically, the film exposure, development, modification and printing are omitted; In terms of equipment, darkroom and film exposure and development equipment are omitted; In terms of benefit, it reduces the cost and saves time and space; In terms of quality, the image transfer quality is obviously improved and the environmental pollution is reduced.

CTP (computer-to-plate) technology appeared in 1980s. This period is the primary stage of direct plate making technology research.

Extended data

CTP can be divided into silver salt plate, thermal plate (ablative thermal plate and non-ablative thermal plate), photosensitive resin plate and polyester plate (nonmetallic plate base) and so on.

Technically, it can be divided into: thermal sensing technology (ordinary laser imaging), purple laser technology and ultraviolet light source technology;

From the degree of automation, it can be divided into manual stand-alone, semi-automatic, full-automatic and mixed (CTF- computer transfer film and CTP- computer transfer plate).

From the fixing way of printing plate on the cylinder, it can be divided into two types: full adsorption and intermediate adsorption. The first part and the second part are fixed by clips. There is no limit to the size of the plate by total adsorption, but the plate format used for clamping must have a fixed size.

In terms of application, it can be divided into commercial CTP system and newspaper CTP system.

Baidu encyclopedia -CTP