How to solve the color deviation problem in PET matte silver paper printing?

Color deviation in PET matte silver paper printing is a common technical challenge that can be solved in a number of ways:

First, clear color standards

1.The use of standard color cards: the use of international Pantone color cards or industry standard color cards as color standards, to ensure that designers, customers and printers have a unified understanding of color.

2.Customer confirmation sample: Before the official printing, make a small number of samples for customer confirmation to ensure that both sides agree on the color requirements.

Second, optimize design and plate making

1.Using CMYK color mode: Because the RGB color gamut is larger than CMYK, designing directly using RGB color mode and printing onto PET matte silver paper will cause color information to be lost, resulting in color differences. Therefore, you should design directly with the CMYK color mode, and regularly check that the color is not out of the CMYK color gamut.

2.Precise control of dot size: Maintain color stability and consistency by precisely controlling dot size. For cases with large dot differences, the dot size needs to be re-adjusted to be as consistent as possible with the sample.

Third, adjust the printing process parameters

1.Control of printing pressure: insufficient or uneven printing pressure will lead to uneven ink thickness, resulting in color difference. Therefore, it should be ensured that the plate surface, blanket and substrate surface is smooth, and uniform and constant printing pressure is used.

2.Adjust the amount of ink: the amount of ink directly affects the color depth of the print. The amount of ink given to each ink should be gradually adjusted according to the actual printing effect to achieve the ideal color effect.

3.Control the amount of moistening liquid: the size of moistening liquid will directly affect the color of the ink layer. According to the actual needs of the printed matter and the characteristics of the ink, the amount of moistening liquid should be reasonably controlled to avoid the phenomenon of light color of large ink layer or dark color of small ink layer.

Fourth, the use of professional equipment for testing and correction

1.Using a color difference meter: Using a color difference meter to detect the color of printed matter can accurately measure the color deviation and give suggestions for adjustment. This is very helpful to solve the problem of color deviation.

2.Monitor calibration: In order to ensure color consistency between the design and the print, the monitor should be calibrated regularly. The calibrated display more accurately reflects the color effects in CMYK color mode.

Fifth, pay attention to environmental factors

1.Temperature and humidity control: Temperature and humidity have a great impact on the transfer of ink and drying speed. It should be ensured that the temperature and humidity in the printing shop are constant within the appropriate range to reduce the occurrence of color deviation.

2.Use standard light source: When observing the color of printed matter, it should be carried out under the standard light source to avoid color differences caused by different light source characteristics.

Sixth, improve material quality

1.Choose high-quality PET matte silver paper: Different batches or different manufacturers of PET matte silver paper surface gloss and color may be different. Therefore, high-quality PET matte silver paper with stable quality and small difference between batches should be selected to reduce the occurrence of color deviation.

2.Test the surface tension of the material: the level of the surface tension of the material will directly affect the adhesion of the ink. The surface tension of the material should be tested before printing and surface treatment should be carried out as needed to improve ink adhesion and reduce the occurrence of color deviation.

In summary, to solve the color deviation problem in PET matte silver paper printing, it is necessary to clear the color standard, optimize the design and plate making, adjust the printing process parameters, use professional equipment for detection and correction, pay attention to environmental factors and improve the quality of materials. These methods can effectively reduce the occurrence of color deviation and improve the quality of printed matter.