The frequency of updating the CTP output system is accelerated, resulting in many operators not being able to master the operation technology of the CTP output system, so that they cannot make better use of the production capacity of the new equipment. In order to solve the above problems, the author briefly summarizes the environmental requirements, parameter settings, common problems and solutions of the CTP output system, so that the operator can adapt to the new equipment more quickly. Maintaining the right environment is the foundation The surrounding environment has a certain impact on the CTP output system, such as temperature changes, humidity of the air, and dust content in the air. The temperature change is the natural enemy of the equipment. The optical path system in equipment such as roller scanners, imagesetters, and CTP platesetters is susceptible to water mist from temperature changes, which affects imaging. Different equipment has different temperature requirements. Therefore, the temperature of the CTP system must be kept within the standard range. Humidity reflects the moisture content in the air. The moisture content is too high. For a long time, the machine surface is easy to embroider and it is not easy to maintain. As a result, the output linearization of the CTP version is unstable. When it is high, it is low. But if the moisture is less than 40%, the machine is also very easy to generate static electricity, so generally need to use industrial humidifier and industrial dehumidifier to adjust, the humidity should be controlled between 40% -60%. Too much dust can easily damage the computer and plate-making equipment. For example, dust can easily accumulate on the circuit boards and air inlets of electrical equipment. It may become a conductor instantaneously due to the influence of external temperature and humidity, causing a short circuit of the circuit board. Laser phototypesetting machine and CTP plate-making machine have high requirements on environmental dust content. Part of dust on the optical path lens and dust particles on the inner drum part will affect the quality of plate-making. Therefore, it is very important to keep the ground clean, prevent the intrusion of foreign dust, regularly remove dust from electronic equipment, and ensure that all equipment is maintained daily. Setting the correct parameters is the key Different plate materials use different setting parameters, so you need to set the corresponding parameters according to different plate types. Now take Fuji plate material, Agfa plate material and Founder Diaolong 8600CTP plate-making machine as examples. Fuji plate requires the energy parameter of CTP plate making machine to be 50, the development temperature is 28 ℃, the development time is 26 seconds, the preheating temperature is 90 ℃ -104 ℃, the development replenishment amount is 80ml; Agfa plate energy setting parameter Choose 32, the development temperature is 24 ℃, the development time is 26 seconds, the preheating temperature is 104 ℃ -127 ℃, the development supplement is 80ml, the baking temperature of the two plates is about 260 ℃ (actual temperature), baking plate The time is 3-5 minutes, and the standard is that the plate is not deformed. The following points should be noted in the specific CTP version: the use and storage conditions of the CTP version are at a temperature of 20 ° C-25 ° C and a humidity of 40% -60%. Because the photosensitive CTP version is sensitive to temperature and humidity, it must be Pay attention to the high temperature and high humidity environment in summer; the use period of the developer is 3 weeks to one month. Change the developer to clean the developer while replacing the developing filter; regularly check the circulation of the developer. The pH value of the developer fluctuates in the range of 11.75- Between 12.25; before the CTP version is output, you should carefully check the screen parameter settings, such as the number of screen lines, output resolution, appropriate linearization options, and corresponding printing anti-compensation; regularly check the test strip of the output CTP version with a plate detector , To see if the output linearity exceeds the error range, and it should be adjusted in time. (Author: Hebei Xinhua United Printing Co., Ltd.)
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