Influence of metamerism on packaging and printing

The phenomenon of metamerism has a great influence on commodity packaging and printing. For example, in printed packaging, many exquisitely printed boxes before leaving the factory have the same color and are accurate, but in the hands of major stores or users, they find that the color difference is large. These will make the user doubt the authenticity of the product, request return or even complaint, and the reputation of the natural business is also damaged. In fact, this phenomenon is caused by the phenomenon of metamerism in printing. It is not a fake product, but consumers do not understand it. The reason, therefore, should pay attention to this problem in packaging printing.

The phenomenon of metamerism is difficult to avoid in packaging and printing and can only be controlled by methods. We know that the final color effect of the printed matter in printing is determined by the ink and the substrate (such as paper), so they are also the main factors that produce metamerism, so we must pay attention to these two aspects. In terms of inks, due to the development of modern packaging and printing in the direction of multi-color and anti-counterfeiting, in addition to the basic colors of yellow, magenta, cyan and black, spot colors are more and more. Different batches of spot color inks are prone to the same color and different spectrum after printing, so special attention should be paid to this problem in the spot color ink modulation, it is an important factor affecting the quality. In addition, the common four-color printing uses different batches of ink, although the printing color sequence and other conditions are the same, it will also produce the same color heterogeneous phenomenon. Therefore, regardless of the spot color or four-color printing, the same brand and the same batch of ink should be used when printing. When the same color heterogeneity is found, it should be reported to the supplier in a timely manner and the same ink should be provided to minimize or control the same color heterogeneity. phenomenon.

However, in the actual packaging and decoration printing, there will be a certain color difference between the three primary colors ink and the spot color or the three primary color dot area ratio and the spot color. For packaging and decoration printing, the reproduction and the standard sample (original) should be allowed to have a color difference when matching the same color and the different colors, but the color difference between the reproduction and the original should be controlled as much as possible and limited to the specified allowable range Inside. In terms of paper (especially colored paper), the nature of paper has a great influence on the colors presented by ink printing, that is, the same ink printed on different papers will produce different color effects. The main factors that affect the color difference of ink printing are the whiteness, brightness and absorbency of paper. Differences in paper color and other properties will also produce metamerism. Therefore, it is very important to achieve the same color as the standard sample and consistent performance parameters when producing paper. However, at present, when paper companies are performing color quality control, most of them only use the color difference value under one observation condition to evaluate the color isochromatic degree without considering the problem of metamerism. Therefore, in printing, a product should use the same batch of paper from the same manufacturer as much as possible to reduce and control the phenomenon of metamerism caused by paper. When looking at samples with customers, the color manuscript and the sample must be observed under the same standard light source to avoid color deviations caused by different light sources. These must be paid attention to in printing.

Height Adjustable Desk

Major media and medical research continue to remind people that a sedentary lifestyle is closely related to many health risks, such as back or neck pain, high blood pressure, heart disease, and obesity.
As one of the most professional Standing Desk manufacturers in China, we have been adhering to the business philosophy of "customer first, quality first" to this day, insisting on providing our customers with high-quality services and high-quality electric Height Adjustable Desk and Pneumatic Lifting Desk and more. Expand our product categories to meet the different needs of customers.

Height Adjustable Desk,Adjustable Standing Desk For Home,Adjustable Desktop Standing Desk,Height Adjustable Wooden Standing Desk

CHEX Electric Standing Desk , https://www.qxhdesk.com