Glossary beginning with O

Glossary of Print Terms

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O

Overprinting

Printing an image over an area that has already been printed. Overprinting is what allows process printing to create the whole spectrum of colors using only process colors. Overprinting also allows for the creation of rich black.

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Spot Color

A specially mixed ink which creates a specific color to be printed on press. Spot color inks are opaque, not translucent like process color inks. Printing with spot colors requires only one plate to print the color versus four when printing with process colors. Adding a spot color to a process job (usually done to ensure the color value of a logo or other standardized color) adds a fifth plate (one each for cyan, magenta, yellow, black and the spot color).