The CTP plate produced by the CTP device, whether the quality of the imaged part after imaging is in compliance with the standard, is difficult to detect with a simple instrument. In other words, only by choosing the correct light intensity can avoid this phenomenon. If the light intensity of the CTP device is not strong enough, it is more likely to cause illusion. Under the CTP plate made under such conditions, the image intensity formed by the graphic part is not enough, and the printing on the machine is easy to cause the falling off, which makes the work passive.
Under normal circumstances, the initial optimal technical value of the CTP equipment is the operation of the after-sales service personnel of the machine. As a general plate-making technician, in the ordinary routine maintenance work, especially in the initial use stage of the new machine to the factory, because the technical indicators and characteristics of the machine itself are not perfect and comprehensive, this work should still be Completed under the guidance and cooperation of the after-sales service technician of the machine.
First, set a test flat net with a dot value of 50%, and fully expose the CTP version. If the value of the flat net on the CTP version is 62%, the laser light value at this time is appropriate, if less than 62. %, adjust the laser power (increase) until the flat screen value on the CTP version is 62%. After the light value is determined, the adjustment of the linear method is used to correct 62% of the network points - still ? - to 50%. Thus, the light value and linearity of the CTP device are basically satisfactory.
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