Printing knowledge, what one-color, two-color, four-color

Monochrome: is only one color ink to print; for example, we usually most common are printed with black ink on white paper, which is monochrome printing. Of course, the ink is not necessarily black, can be red, yellow, green, etc.; paper is not necessarily white, can be a variety of colors of colored paper. As long as it is printed with one kind of ink, it all belongs to single-color printing.

Two-color: as the name implies is printed with two colors of ink. (Paper and color change and monochrome analogous)

Four-color: that is, printing with three primary colors (yellow, magenta, cyan) and black. Four-color printing, each page to be out of four films, stacked together in order to print the color pattern. These four films are cyan, magenta, yellow and black. However, do not think that the film labeled "cyan" is cyan, labeled "magenta" film is magenta. These four films are just different shades of gray to indicate the intensity of a certain color at the time of printing.

If you make a picture on the computer when the color, it is best to choose the mode for CMYK value, because the printing is generally used in four-color printing, do not use RGB values, otherwise the effect of the printing will be a color difference!

I hope it helps you!