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Glossary

Perfect Binding

A bindery method where all pages are trimmed to a single sheet, clamped together, and the cover is wrapped around the spine. The pages are attached to the cover using adhesive.

Perforation

This is created using a die cutting machine or binding machine which stamps a line of small dotted holes for the purpose of tearing off a portion of a printed piece. (Usually straight lines, vertical or horizontal).

Pixel

Short for picture element, a dot made by a computer, scanner or other digital device, the smallest element possible on a computer screen.

Pixels Per Inch (PPI)

Also referred to as Dots Per Inch (DPI), which is a measurement of resolution of a printed image determined by the number of dots that fit into one inch. For optimal results, your image must be at least 300 PPI/DPI at the final output size. Please do not attempt to change a low resolution image to a higher one by changing the PPI/DPI in your image software. Doing so will result in a blurred output.

Plate (Plating)

A metal sheet laser inscribed with an image to be reproduced using a printing press.

Plate

Piece of paper, metal, plastic or rubber carrying an image to be reproduced using a printing press.

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