What you See is What you Get -- How important is closed-loop control of color?
Time:2022-07-11
Views:3822
With the great abundance of market supplies, people have more and more choices of goods. Color is an important part of goods, most consumers in the purchase of goods, to a great extent, will be affected by the color of the packaging of goods. Therefore, in the product packaging design, brand color design is particularly important. However, for printing enterprises, the richer the use of brand color, the more difficult the problem in production control...
Color is across the whole packaging supply chain, from design to retail how to ensure the consistency of brand color is a big problem facing printing enterprises. The present industry present situation is that some enterprises in the prepress screen display link made great efforts, some enterprises in the digital proofing link maximum simulated brand color, some enterprises in the printing process by detecting instrument to control the quality brand colour, but such dissever practice, does not ensure that can eventually consistent brand colors.
Therefore, closed-loop color control is particularly important to achieve the true meaning of "WHAT you see is what you get". In fact, the earlier the color is confirmed, the more likely it is to reduce the cost of color adjustment.
So how to do color closed-loop control?
The format of the data in the central color database must use spectrum, because the color is often inconsistent in the actual production process and the lighting environment of the final display of goods, which will directly lead to the phenomenon of heterochromia, and the use of spectral data is the only way to solve the problem of heterochromia. For this purpose, ISO issued a special color color characteristic description format -- CXF format (the latest version of CXF-4), which corresponds to the ISO specification described as ISO 17972-4, in the CXF color data structure defines the color spectral order information and the overprint information with black.
When spectral data collection is completed, in the pre-press design stage, we can select, confirm and preview the color of spot color database through the corresponding plug-in. As figure 2 shows, there is a big difference between the spot overlay effect in Illustrator on the left and the plug-in preview effect on the right. Because spot color data itself is actually collected, the effect displayed by the plug-in is closer to the actual printing result. After completing the color confirmation step of the document, we generally need to conduct digital proofing to further confirm the color before printing to ensure that the machine printing can quickly achieve the desired effect.
In the printing control stage, the corresponding detection instruments are used to realize online or offline color data measurement. Through real-time feedback of color data and comparison with the pre-press color database, the color quality report is created and submitted to the brand manufacturer for confirmation. At this point, we completed the collection of color data, and applied to design, digital proofing, production and other processes, which really realized the closed-loop control of color.
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Anna Zhang