Glossary
Offset Lithography
A method of lithography by which the image is not printed direct from the plate but offset first onto a rubber covered cylinder, the blanket that performs the printing operation.
Opacity
Description of non-transparency in printing papers.
OPI
A process in which low resolution files are replaced automatically by high resolution files at pre-press stage.
Original
Any matter or image intended for reproduction
Overprint
Printing over an already printed area.

