Knowledge of graphic design printing

      printing color is composed of different C (blue), M (Pin Hong), Y (yellow) and K (black) the percentage of color, so that the mixed color is more reasonable. C, M, Y, K is usually used in four color printing. At the time of printing, the four kinds of color have their own version of the color, in color version recorded the color dot, the four colour version together form the defined primary. In fact, in the paper the above four kinds of printing color dot is separate, but the distance is very close, because our eyes are limited, so can not tell. The mixing effect we get the visual impression that a variety of colors, so there are a variety of different colors. Y, m, C can synthesis of almost all the colors, but has yet to be black, because the Y, m, C, black is impure, at the time of printing needs more pure black. The electronic documents used in the printing must be used for the four colour printing (i.e., C, Y, M, K), and the RGB color model can not be used for printing output. Remember!