Four Color Printing
Four-color that is: cyan (C), magenta (M), yellow (Y), black (K), all colors can be made by mixing these four inks, and ultimately color graphics.
Spot Color Printing
Spot color refers to the printing of a specific ink to print the color, spot color color is a lot, commonly used is the spot gold, spot silver, can refer to the Pantone color card, but spot color can not be achieved gradient printing.
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