Just the right chemical potion is not enough. To achieve the most ideal printing effect, the only way is to transfer the actual medium of text and image data, that is, the printing plate, also must be perfect. Although thermal plate imaging and post-processing are relatively straightforward, they still require some expertise and technology.
Whatever the purpose, even the most advanced computer-to-plate machine contains a small photo studio. Although the tedious process of film development has been omitted, the imaging platemaking still needs to be accurate, which means that the imaging time and energy must be accurate. It is also important to regularly check the development potion and other development parameters. If a problem occurs in a link, it may cause banding on the print. This stripe pattern appears as thin lines or stripes with a pitch of 1-2.5 mm, which will destroy the effect of the entire printed image.
Production personnel should develop a habit of pre-checking the pre-press link, including the setting of the plate-making machine, so that when searching for the cause of the fault, precious printing time will not be wasted. Although the world's most advanced CtP devices (such as the Heidelberg Speedmaster series) can continuously monitor and adjust the laser power, incorrect settings will inevitably cause unpleasant results. Therefore, no matter what plate-making equipment is used, it is necessary to regularly check the plate loading and unloading system to understand the mechanical wear status at any time. As for the printing plate, it should also be stored in the correct way to ensure that its sensitivity and imaging performance are intact.
It goes without saying that chemical potions also play a key role in the development process. For example, the consumption and evaporation of the potion must be balanced and stable to ensure that the developer does not show "fatigue signs". Not only that, people also observe the consumption and oxidation status of the potion every day, in order to replenish the developer in time, otherwise, the development effect will gradually weaken. In some cases, the water on the squeeze roller of the developing machine returns to the developing tank, which may also cause undesirable consequences. In order to prevent the developer from becoming thinner, the setting of the squeeze roller of the developing machine and the spray position of the spray pipe should also be checked. Workers can assess the status of the developer by measuring the pH value (suitable for photosensitive resin plates) or the conductivity value (suitable for a variety of thermal plates).
If the potion is in a normal state but the printing effect is still unclear, you need to check the plate transfer situation more carefully. If the developing solution fluctuates back when the printing plate passes through the developing machine, it means that the chain tension or the driving roller needs to be readjusted. The last point is also very important. Like the problems encountered by many traditional photo studios, the developer may be too hot or too cold. For safety purposes, a digital or alcohol thermometer should be used to monitor the normal operation of the heating or cooling system, while the use of traditional mercury thermometers poses a safety risk and will damage the entire device if it breaks. The ideal temperature of the developer is specified by the plate supplier.
All in all, in order to ensure that the printing process is smooth, we should first ensure that the plate making meets the standards. In this respect, the test functions carried by all Heidelberg's plate-making equipment can be used to great effect. Operators can use this to more easily complete daily inspections, especially to be more confident about the actual development process. In other words, they can get effective help at any time to ensure the stability of the entire production. The printing plates and developing potions of the Heidelberg Safy series can effectively guarantee the smooth operation of the pre-press photo studio. In order to minimize downtime, the fully equipped Speedmaster can even provide Heidelberg service engineers with detailed information on equipment operation or prompt them to replace a worn part. This work can be completed within a few seconds via the Internet. If the modern "photo studio assistant" can quickly process the data, it can save time and cost and reduce the occurrence of problems-so that everyone in the printing process will benefit greatly.
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