The direct plate-making system is a comprehensive multi-disciplinary technology industry, which includes precision machinery and optical technology, electronic technology, color digital image technology, computer and software technology, new printing plate and material technology, automation technology and network technology. The automatic production system is another major technological revolution in the contemporary printing industry. There are four main types of CTP direct plate-making machine: inner drum type, outer drum type, platform type and curve type. The most used are inner drum type and outer drum type. Among these forms, the outer drum type gradually shows the mainstream trend;
Major equipment suppliers
Most suppliers of CTP equipment come from the United States, as well as German and Japanese companies established in the United States. Manufacturers of large-format equipment include Agfa, Barco, Creo, Heidelberg, Gerber, ECRM, Optronics, Cypress USA Prepress, Japan Screen Company, etc .; small and medium-sized manufacturers include PrintWare, DuPont, etc. Multiple. The equipment dedicated to newspapers are Creo and Krause.
How to install
According to the different degree of automation, the plate mounting method can be divided into two types: manual and automatic. The manual version of the machine is cheap, but it is generally required to operate in the dark room, so the efficiency is low; while the automatic version of the device has high work efficiency, but the price is more expensive, generally about 100,000 US dollars more expensive than the manual model . Moreover, the automatic equipment must use a whole box of printing plates with release paper when it is on the plate. The surface of the version has a light-proof protective film, so it can be operated in a bright room. With the plate feeder, the protective film on the surface of the printing plate can be automatically peeled off when the plate is released, so that the plate material can participate in the plate making.
The fixing methods of the plate material on the drum include: full absorption type and middle absorption, and two kinds of fixing with clips at the beginning and the end. The full-adsorption type has no restrictions on the size of the plate, and the plate format used by the clip-type must have a fixed size.
30% of CTP equipment is equipped with a punching device. Generally, the punching process is performed after exposure, which can ensure the precise positioning of the printing plate on the printing press, reduce the pre-press preparation time for the adjustment of the printing roller, and improve the printing quality and overprinting. ,positioning accuracy.
Plate type
The base is divided into: metal plate and polyester plate, the metal plate is mainly aluminum plate, high printing resistance, suitable for long plate printing, and the polyester plate is more suitable for the needs of short plate printing; The coating can be divided into photosensitive resin plate and thermal plate. The former is suitable for commercial printing of medium and long plates, and the plate making speed is fast, while the latter can be processed under yellow light or ultraviolet light filtered out. The plate making quality is the best.
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