How to strengthen the color management of packaging printing？

"What you see is what you get" is the ultimate goal of printing color management. In today‘s packaging and printing, due to different materials, different principles and characteristics of display tools and other problems, coupled with the impact of heterochromia, people‘s visual sensory differences and observation of environmental factors, there are more or less certain gaps in the evaluation of the final color of printing products.

How to carry out "what you see is what you get" to the end and give better play to the efficacy of color management? In addition to implementing various processes and norms of color management, printing enterprises should strengthen control from the following three aspects.

1. Attach importance to the control of the digital structure of pre-press files to improve the accuracy and stability of printing colors

Color management is to standardize and transfer the printing color data, so that the prepress color files are displayed through printing under standard conditions, so that printing has repeatability and stability. However, printing is actually a dynamic form of production, and its control scale also fluctuates within a certain standard range of printing color management, so attention should be paid to the control of printed documents before printing.

For example, according to the ink absorption characteristics of different paper, in the pre-press processing, we should control the total amount of dark ink of printed documents; In industrial packaging printing, due to the large printing volume, printing dynamic change factors more, therefore, we should make full use of UCR, GCR, four color to spot color and other pre-press technology, under the premise of the color standard effect unchanged to change the digital structure of the document, so that the printing control is more accurate and stable.

2. Attach importance to the application of digital proofing technology of real materials to improve the accuracy and authenticity of digital proofing

In the color management process, the application of digital proofing technology is one of the most important links. In the past, digital proofing mainly uses transfer film, special digital proofing paper simulation, printing paper coating printing and UV inkjet simulation for digital printing proofing. But for printing and packaging proofing, we not only want to confirm the color of proofing, but also want to confirm the paper material of proofing, because we have to carry out some processing technology and physical performance tests after packaging. Therefore, for this link, there is inevitably a high cost of transfer film, poor operability of printing paper coating, as well as digital proofing paper, UV inkjet simulation and actual proofing there is a big gap between the problem, part of the digital printing equipment for proofing cost is not high.

3. Attach importance to the impact of printing materials and post-process on printing colors, and make up for the weak links in color management

Printing enterprises with high concentration of product types tend to have relatively fixed and stable materials and processing technology in the control of printing production, and it is also very easy to control color management and establish data and standardization. But most of the printing enterprise, is facing the needs of different customers and different types of product process, especially the printing paper is multifarious, even the same brand of different width or batch paper white paper also exist bigger difference, this will give the printing color requirements of high light color products brought difficulties, and after processing, such as various dumb film, Because the film material is different, pre-coating and water-based film process is also different, these will have an impact on the final printing color. In addition, after gloss processing, the difficulty of correct collection of color data increases, it is more necessary to use real material proofing technology, reflect these factors in advance, through the color adjustment curve, directly solve the problem before formal printing. This can not only save the machine proofing time, but also improve the success rate of product proofing, greatly reduce the production cost of printing enterprises.

Striving to pursue the "what you see is what you get" printing color management technology is not a panacea, but it is absolutely impossible for printing enterprises to leave color management, its help to printing enterprises is beyond doubt and obvious. In this era of digitalization, automation and intelligent production management, the importance of color management has become the core problem affecting the development of printing enterprises, and it is an important index to evaluate the production management level of printing enterprises. Color management "wysiwyg" is implemented in the printing industry part of the production process, at the same time through the pre-press, printing, printed after the whole process control, to quickly find the quality problem of the printing enterprise, analysis the causes of problems, so as to solve the problem quickly, let printing production for a long time in a stable and controllable quality level, no doubt, This is a proven scientific technique.