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Reproduction of an image or text in color is known as color printing. While there are several techniques for such a procedure, specific graphic procedures and industrial equipments are used for bulk reproduction of color images on paper. Such techniques are mostly suited for printing presses where thousands of impressions are published on newspapers, magazines, brochures, posters, cards and similar bulk-market items.

Some printing presses have the capability to print both four color process inks and additional spot color inks all at once. In this type of commercial printing, four inks are used to print full color images, like color photographs, namely cyan, magenta, yellow and black. It’s shortened as CMYK and is referred to as ‘four-color-process’ or simply process color printing. In this process, two major graphic techniques are required:

1. Color separation – separates original artwork into red, green and blue (RGB) components. Then you invert each of these separations. When a negative image of the red component is produced, the resulting image shows the cyan component of the image. Similarly, negatives of green and blue components are produced to get magenta and yellow separations. A black separation is also created to improve the shadow and contrast of the image. Grey component replacement, under color removal, and under color addition are the techniques involved in deriving this black separation.
2. Screening or Half-toning – tiny dots of each primary color are printed in a pattern small enough that an individual recognize a solid color. A full continuous range of colors can be produced with this procedure.

A four color press printing screen is used in the case of printing designs and logo for a range of promotional products, such as garments, various sporting events, or other similar activities that requires four color printing.

For more printing resources about color printing & online color printing, do feel free to visit Logical Prints.com.

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