Brief talk: Tea Coffee Pouch Gift Boxes CTP platemaking linear management

Brief talk: Tea Coffee Pouch Gift Boxes CTP platemaking linear management

Color management in CTP process is the key and difficult point of CTP technology. ICC characteristic curve that can accurately reflect the characteristics of equipment determines the effect of color management. Therefore, the generation and application of ICC characteristic curve has become the top priority of color management.

First of all, we know that the current purple laser CTP because of its photosensitive characteristics and the characteristics of the plate punching machine determines that linearization is an essential part. Some users always have doubts about linearized curves when using, and they are not very assured about the accuracy of the linearity of the device. After a lot of practice has proved that this worry is completely unnecessary. Some monitoring methods in the process of use can fully ensure the accuracy of dot restoration.

1. Control of ambient temperature and humidity. In a safe photosensitive environment, the strict control of temperature and humidity is very favorable for the reproduction of CTP dot. Generally, it is necessary to ensure that the ambient temperature is about 23 and the humidity is between 50 and 60.

2. Precise PH control. Punching machine developer according to the requirements of regular replacement, every day before publication measuring punching machine development tank in the developer, to ensure that 28℃, developer PH value in the range of 12±0.25. If not enough, refill refill liquid.

3. The measurement of the plate tester. In order to verify the accuracy of the publishing dot value, you can make a gray ladder output attached to the bending plate on the plate material, after the completion of the plate measurement of the actual dot value, check the difference with the required value, but in the measurement, pay attention to the comparison of the value is added after the inverse compensation curve.

After the above three points are guaranteed, the dot value obtained is completely without problem. They have become a useful weapon in controlling network restoration.

Of course, PH value to reach a relatively stable state, still need a period of time to monitor and adjust. Due to the user's use of plate size and environmental differences, a period of time before the installation may be a process to explore the PH value, in this period of time to do a good job of real-time monitoring of publishing, we can find a suitable amount of supplementary liquid. If PH does not change significantly during publication over a period of time, it indicates that the adjustment has met the criteria. The user can learn the adjustment skills from the hardware engineer, and make some adjustments when necessary.