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Glossary of Printing & Computer Graphics Terminology
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To print an image on paper by pressing the front surface resulting in a sunken appearance

An instrument used to measure the density of ink and determine ink coverage

Degree of lightness or darkness of a colour

A light-sensitive chemical used as coating on paper, film, or press plates

Metal plate cut used for cutting, stamping or embossing images

Die cutting
A process of putting a shape or design on paper using metal dies

Direct Imaging
A technology that directly transfers an image to a press plates from a digital file, eliminating the use of film plates

Direct Imaging Press
An offset press where the plate is imaged directly on the press with laser

Single identifiable element of an image; also referred to as a “pixel”

Dot gain or spread
An occurrence when dots print larger than they were on the plate or film

Dots Per Inch (DPI)
A measurement of resolution of a screen image or printed image defined by the number of dots that fit horizontally and vertically into one inch; The higher the DPI, the sharper the image

Double burn

Using multiple negatives to burn one image onto a print

A thin coating or smear of ink on paper used to determine and approve colours before printing

Parts of artwork that are not reproduced

A mock layout of a copy used to show how a finished product should appear

A halftone image made up of two colours – black and white

The ability of a press to print on both sides of a sheet without turning the sheet over

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