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Glossary of Terms

We take great pride in making our clients feel confident about their jobs during the production process. To help you gain a better understanding of what’s happening with your project, we’ve compiled a glossary of terms that we commonly use in our industry.

Glossary of Commonly Used Industry Terms

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
There are currently 20 names in this directory beginning with the letter O.
OA Of Register
When two sheet passes on a press are misaligned.
OBC
Outside back cover.
Oblong
A term used to describe printed books, catalogs etc., that are bound on their shorter side; also referred to as album bound.
OFC
Outside front cover.
Off-shore Paper
Any papers made outside the US and Canada.
Offset
The most commonly used printing method, whereby the printed material does not receive the ink directly from the printing plate but from an intermediary cylinder called a blanket which receives the ink from the plate and transfers it to the paper.
Offset Gravure
A complex offset process involving multiple transfers between the gravure plate, the plate cylinder and a solid rubber plate.
Offset Lithography
Indirect printing method in which the inked image on the press-plate is first printed onto a rubber blanket, then in turn offsets the inked impression on to the sheet of paper.
Offset Paper
A term for uncoated book paper.
Onionskin
A light bond paper used for typing and used with carbon paper because of its thinness.
Opacity
Quality of papers that defines its opaqueness or ability to prevent two-sided printing from showing through.
Opaque
A quality of paper that allows relatively little light to pass through.
Opaque Ink
Ink that completely covers any ink under itself.
Orthochromatic
Any light sensitive surfaces that are not sensitive to red.
Over Run
Surplus of copies printed.
Overhang Cover
A cover of a book that extends over the trimmed signatures it contains.
Overlay
A transparent sheet placed over artwork, in register with the work it covers; this is used to call out other color components of the work, instructions or corrections.
Overlay Proof
A process of proof making whereby the color separations are individually exposed to light sensitive film. This film is then set in registration with a piece of white paper in the background.
Overprinting
Any printing that is done on an area that has already been printed.
Overset
Type that is set in excess of the allotted space.