In the printing design, the three primary colors of the ink are mixed in different proportions to obtain the desired color spectral tone values. The correct density and balance of the three primary inks printed on the substrate are directly related to the print designer. Although print design operators can only measure and set ink density within a limited range, these density ranges can help printer designers obtain a wide range of overprint ink colors, regardless of whether the ink is transparent or whether the substrate is pure white. In print design we can find these density ranges in a variety of related publications very conveniently: as explained in the FIRST and SWOP standards.
The ink density range in the printing design according to the instructions can be used for any ink overprint sequence, ie YMC, YCM, CMY, CYM, MCY or MYC. But does the printing design produce the same color for each sequence? It is not.
Even if the density of the field is controlled at absolute value, each overprint sequence in the printing design will produce different overprint colors of red, green, and blue, because the printing ink formulations on each printing design have different properties, such as affecting the coverage rate. Ink opacity. Therefore, the surface energy of the ink-dried film layer printed first (printing design) will affect the wet ink adhesion characteristics of the post-printing (printing design).
The yellow pigments have poor coverage, and the magenta and cyan pigments have good coverage. However, the yellow pigment ink has a high surface energy.
The first step in color management in print design is to determine the best ink overprint sequence and density balance that can provide a high color rendering range.
The GATF association developed a simple color hexagonal color map many years ago to visualize the ratios of different colors. Densitometer can measure hue deviation,
Grayscale and overprint colors to show the pros and cons of the color and compared with the three primary colors.
For example, in the three corners of the hexagonal color map, the three primary colors (YMC) are the ideal ink, and the other three corners are the overprint composite color (RGB). The center of the hexagon is the neutral color.
(White to gray to black). The greater the color strength of the ink, the closer it is to the corners and the farther away from the neutral color.
When the printed and composite colors of the actual printing design are distributed into the hexagonal color map, the density, hue difference, and gray value of the three primary color inks (CMY) and the composite color (RGB) are presented.
Because the ink is not ideal, the distributed hexagons (irregularities) will not be the same size as the entire ideal hexagonal color map, but it can be used as an optimized print. therefore,
Using the GAFT method for irregular hexagonal distribution to display the tri-primary and composite color information of the printed design, the best density and overprinting order can be obtained.
By measuring the size of the color coverage area determines the overall ink coloring performance and contrast strength of the printed design color, of course, the larger the better.
Other density values ​​can also be distributed as part of the print design measurement sequence, such as the 25% dot, 505 dot, and 755 dot density values ​​of the color.
If the distribution of these other hue values ​​is concentrated, it means that the print design is under control. Conversely, the lack of concentration indicates that the print design is out of control and necessary adjustments should be made.
The ink density range in the printing design according to the instructions can be used for any ink overprint sequence, ie YMC, YCM, CMY, CYM, MCY or MYC. But does the printing design produce the same color for each sequence? It is not.
Even if the density of the field is controlled at absolute value, each overprint sequence in the printing design will produce different overprint colors of red, green, and blue, because the printing ink formulations on each printing design have different properties, such as affecting the coverage rate. Ink opacity. Therefore, the surface energy of the ink-dried film layer printed first (printing design) will affect the wet ink adhesion characteristics of the post-printing (printing design).
The yellow pigments have poor coverage, and the magenta and cyan pigments have good coverage. However, the yellow pigment ink has a high surface energy.
The first step in color management in print design is to determine the best ink overprint sequence and density balance that can provide a high color rendering range.
The GATF association developed a simple color hexagonal color map many years ago to visualize the ratios of different colors. Densitometer can measure hue deviation,
Grayscale and overprint colors to show the pros and cons of the color and compared with the three primary colors.
For example, in the three corners of the hexagonal color map, the three primary colors (YMC) are the ideal ink, and the other three corners are the overprint composite color (RGB). The center of the hexagon is the neutral color.
(White to gray to black). The greater the color strength of the ink, the closer it is to the corners and the farther away from the neutral color.
When the printed and composite colors of the actual printing design are distributed into the hexagonal color map, the density, hue difference, and gray value of the three primary color inks (CMY) and the composite color (RGB) are presented.
Because the ink is not ideal, the distributed hexagons (irregularities) will not be the same size as the entire ideal hexagonal color map, but it can be used as an optimized print. therefore,
Using the GAFT method for irregular hexagonal distribution to display the tri-primary and composite color information of the printed design, the best density and overprinting order can be obtained.
By measuring the size of the color coverage area determines the overall ink coloring performance and contrast strength of the printed design color, of course, the larger the better.
Other density values ​​can also be distributed as part of the print design measurement sequence, such as the 25% dot, 505 dot, and 755 dot density values ​​of the color.
If the distribution of these other hue values ​​is concentrated, it means that the print design is under control. Conversely, the lack of concentration indicates that the print design is out of control and necessary adjustments should be made.