Since CTcP was officially unveiled in China as a new computer-to-plate technology, its rapid development has attracted the attention of people in the plate-making industry. It has become another "dark horse" after thermal CTP and violet laser CTP, especially for small and medium-sized enterprises. The favor, this article will introduce you to the flat screen inkjet platesetter.
In general, the reflectivity provided by the plate supplier can only be used as a reference. We need to use the Focus Cal reflect to automatically measure the left, middle and right positions of the plate. The average value obtained is the reflectivity of the plate. This value is not standard, and the reflectivity of different plates is not the same, so it is very important to adjust the reflectivity when replacing the plate with a new plate.
The surface reflectance is used for the machine to detect the edge. Different plates usually have different surface reflectance. If the reflectance is not set correctly, the machine may report an error without being published, so that normal plate making cannot be performed.
CTP technology is the continuation and development of the laser photo-alignment process and the PS plate process. The biggest difference between the sensitization mechanism of the sensitization and the PS plate is that the PS plate exposure uses an ultraviolet spot source. In the printing process, in addition to direct illumination, there are scattered and refracted light, and the loss of light energy is relatively large. The laser light source of the laser plate making system is mostly monochromatic light. Generally, one wavelength or a range of wavelength is selected. This is the laser. The advanced position of the plate making machine.
The unprocessed plate material means that the plate material can be printed on the machine after exposure and imaging on the direct plate making equipment without any subsequent processing steps. In terms of plate making, the process-free plates fall into two categories: process-free plates for DI (on-board direct imaging) presses and plates for exposure imaging on CTP platesetters. The process-free CTP plate improves production efficiency, eliminates chemical development, reduces the amount of energy consumed during exposure, reduces overall plate making costs, shortens the plate making process cycle, and has an advantage in today's increasingly emphasis on environmental protection— It is more obvious to the environment without pollution.