Ingenious color printing design method

2023-08-11 01:09:36
In the print design we can easily find these density ranges in various related publications: as stated in the FIRST and SWOP standards. The three primary colors of the ink are mixed in different ratios to obtain the desired color spectral tonal value. The correct density and balance of the three primary inks printed on the substrate is directly related to the print designer. While print design operators can only measure and set ink densities to a limited extent, these density ranges can help print designers achieve a wide range of overprint ink colors, whether or not the ink is transparent, or whether the substrate is white.

The ink density range in the print design according to the instructions can be used for any ink overprint sequence, ie YMC, YCM, CMY, CYM, MCY or MYC. But does the print design have the same color for each order? In fact, even if the density of the field is controlled to an absolute value, each overlay order in the print design will produce different overprints of red, green, and blue, because the printing ink formulations on each print design have different properties, such as influence. The opacity of the ink. Therefore, the surface energy of the ink-dried film layer which is printed first (printed design) will affect the adhesion characteristics of the wet ink after printing (printing design).

The yellow pigment has a poor hiding rate, and the magenta and cyan pigments have a good hiding rate. However, the yellow pigment ink has a high surface energy.

The first step in color management in a print design is to determine the best ink overprint sequence and density balance that provides a high color range.

For example, the three corners of the hexagonal color map are ideal ink primary colors (YMC), the other three corners are overprint composite colors (RGB), and the center of the hexagon is neutral (white to gray) To black). The greater the ink intensity, the closer to each corner and the farther away from the neutral color.

The GATF Association developed a simple color hexagonal color map many years ago to visualize the matching of different colors. The densitometer can display the color difference by measuring the hue deviation, gray scale and overprint color and compare it with the three primary colors.

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