Glossary beginning with O

Glossary of Print Terms

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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This is an acronym for the four process color inks used in 4-color printing: Cyan, Magenta, Yellow and Black. Although the K commonly stands for black it does not have to. K is for "Key" plate. The Key plate holds the detail for the printed image, in 4-color printing this is usually black ink.