Sometimes users often put forward some ideas on the plate-making process curve according to the needs of their own products (such as the black and blue small dots on the skin color of the figure album, the retention of small shadow dots such as jewelry albums, etc.), and use it to compare with the traditional film. Block printing for comparison. Since the acquisition of the CTP process curve is a time-consuming, labor-intensive and cost-intensive process, basically it can be obtained by printing test documents, collecting data and making accurate measurements, while the traditional film printing is only through simple printing. Minor adjustments were made for time-reduction printing. After repeated machine tests and verifications, although it may not be able to achieve completely accurate results, the customer believes that the timeliness is more obvious than CTP. As a result, it has gradually entered a misunderstanding that traditional film is more convenient and practical than CTP.
Then we go back to the root of the problem, and it is not difficult to find that all the requirements are actually based on an uncertain factor: they are all deliberately adjusting the existing plate-making process according to their own subjective ideas. We believe that "the skin color of the characters must be soft and rosy, and the jewelry shadows must be complete and delicate", these are related processing on the plate making without actual standards. However, have we noticed that the CMYK value on the source file is far from the actual dot value on the version? At the same time, due to the adjustments made due to these uncertain factors, if the process parameters cannot be recorded in detail, after the next printing, the same job will print different results on the same machine.
So what we need to do is to establish a different standard for different needs. Regardless of normal operating specifications or abnormal process standards that need to be changed specially, as long as there are relevant reference data, different process curves can be established. The newly established process curve is closely integrated with the computer and process software, so there will be no inconsistent output at different times, which can completely guarantee the accuracy and consistency of the arrival site. Of course, it is not desirable to have too many process curves in actual operation. Too many process curves are ultimately inconvenient to manage, and making process curves is also impractical for production.
At present, we formulate the CTP process curve with user characteristics based on the international standard of ISO12647-2, the domestic standard of GB17934-2 and the actual printing situation in China. In order to gain the quality advantage in the fierce competition, printing enterprises should actively pay attention to the standard Application, and strive to be in line with international standards in product quality management.