M is short for magenta in the four-color printing process.

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Magenta is one of the subtractive primary colors used by PsPrint in process printing. It is commonly known as "process red."

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Mask is the process used to prevent light from reaching part of an image, therefore isolating the remaining part.

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Moire is an undesirable pattern that appears when two or more screen patterns are placed over one another. Moire may be caused by misalignment, incorrect screen angles, slipping or slurring.

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Negative is a reverse of an image created when processing film. The light and dark parts of an image are tonally reversed from the original copy.

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Offset lithography is a printing process where the image prints by transferring ink from a plate to a rubber blanket that deposits the ink onto the substrate instead of directly from plate to paper.

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Offset printing refers to offset lithography, which is a printing process where the image prints by transferring ink from a plate to a rubber blanket that deposits the ink onto the substrate instead of directly from plate to paper.

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Pantone matching systems or PMS for short are the most popular color matching systems used in the printing industry. A true PMS color is defined by a mixture of inks that will provide a specific color.

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

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Perforation takes place on a binder machine, creating a line of small dotted wholes for the purpose of tearing-off a part of a printed matter (usually straight lines).

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Plate is a metal sheet carrying an image to be reproduced using a printing press.

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Abbreviation for pantone matching systems.

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Press layout or ruleup is a drawing that shows how a printing job must be imposed using a specific press and sheet size. It shows where pieces will be cut, perforated and folded.

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