CTP direct plate machine loading method and plate type

The plate-making system is a comprehensive multidisciplinary technology industry. It includes precision machinery and optical technology, electronic technology, color digital image technology, computer and software technology, new type plate and material technology, automation technology and network technology. The automatic production system is yet another major technological revolution in the contemporary printing industry. CTP direct platemaking machines mainly include inner drum type, outer drum type, platform type, and curve type. The most used types are inner drum and outer drum type. In these forms, the outer drum type gradually shows the mainstream trend.

Equipment major suppliers

The suppliers of CTP equipment are mostly from the United States, as well as companies established by Germany and Japan in the United States. The suppliers of large format equipment include Agfa, Barco, Creo, Heidelberg, Gerber, ECRM, Optronics, Saiten U.S. Prepress, Japan Screen, etc.; medium and small format manufacturers include: PrintWare, DuPont, etc. Many. Providing equipment dedicated to newspapers includes Creo, Krause and others.

Loading mode

According to the degree of automation, the loading mode can be divided into manual and automatic. Manually on the version of the machine is cheap, but generally requires a darkroom operation mode, so the efficiency is lower; and automatic version of the equipment, work efficiency, but the price is more expensive, generally more expensive than the manual model 100,000 US dollars . Moreover, when the automatic device is in the upper version, it must use a full-size plate with a release paper. There is a layer of light protection film on the surface of the plate, so it can be operated in bright room. In the upper version, it is possible to automatically peel off the protective film on the surface of the printing plate by means of a plate feeder so that the plate material can participate in plate making.

The fixing method of the plate material on the drum includes: full adsorption type and middle adsorption, and two types of clamping are fixed at the end and end. There is no limit to the size of the plate for full adsorption, and the size of the plate for the clip type must be fixed.

30% of CTP equipment with punching device, the general punching process after exposure, this can ensure that the printing plate on the printing press precise positioning, reduce the pre-press preparation time for the printing roller adjustment, improve the printing quality and overprint ,positioning accuracy.

Plate type

The base is divided into: metal plate and polyester plate. The metal plate is mainly aluminum plate. It has high resistance to printing force and is suitable for long printing. The polyester plate is more suitable for the needs of short printing. Coatings can be divided into photosensitive resin plates and thermal plates. The former is suitable for medium-to-long-term commercial printing, and the platemaking speed is fast. The latter can be processed under yellow light or ultraviolet rays that are filtered out, and the platemaking quality is the best.