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M Weight
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The actual weight of 1000 sheets of any given size of paper.
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Machine Coated
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Paper that has had a coating applied to either one or two of its sides during the papermaking process.
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Machine Direction
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An alternate term for grain direction.
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Machine Finish
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A paper finish that results from the interaction of the paper with the Fourdrinier process as opposed to post machine embossing. See also Fourdrinier.
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Machine Glazed (MG)
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Paper holding a high-gloss finish only on one side.
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Magenta
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Process red, one of the basic colors in process color.
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Magnetic Black
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Black pigments containing black iron oxides, used for magnetic ink character recognition.
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Makeready
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(1) All activities required to prepare a press or other machine to function for a specific printing or bindery job, as compared to production run. Also called setup. (2) Paper used in the makeready process at any stage in production.
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Making Order
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Order for paper that a mill makes to the customer's specifications, as compared to a mill order or stock order.
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Male Die
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Die that applies pressure during embossing or debossing. Also called force card.
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Manuscript (MS)
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An author's original form of work (hand written, typed or on disk) submitted for publication.
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Margin
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Imprinted space around the edge of the printed material.
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Mark-Up
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Instructions written usually on a "dummy."
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Matte Finish
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Flat (not glossy) finish on photographic paper or coated printing paper.
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Mechanical
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Camera-ready assembly of type, graphic and other copy complete with instructions to the printer. A hard mechanical consists of paper and/or acetate, is made using paste-up techniques, and may also be called an artboard, board or paste-up.
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Mechanical Bind
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To bind using a comb, coil, ring binder, post or any other technique not requiring gluing, sewing or stitching.
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Metallic Ink
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Ink containing powdered metal or pigments that simulate metal.
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Metallic Paper
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Paper coated with a thin film of plastic or pigment whose color and gloss simulate metal.
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Metropolitan Service Area
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A group of ZIP codes usually in close proximity defining a large metropolitan area (e.g. New York City or Los Angeles).
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Micrometer
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Instrument used to measure the thickness of different papers.
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Midtones
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In a photograph or illustration, tones created by dots between 30 percent and 70 percent of coverage, as compared to highlights and shadows.
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Mil 1/1000 Inch
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The thickness of plastic films as printing substrates are expressed in mils.
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Misting
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Phenomenon of droplets of ink being thrown off the roller train. Also called flying ink.
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Mock Up
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A reproduction of the original printed matter and possibly containing instructions or direction.
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Moiré
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An undesirable halftone pattern produced by the incorrect angles of overprinting halftone screens.
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Monarch
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Paper size (7' x 10') and envelope shape often used for personal stationery.
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Mottle
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A term used to describe spotty or uneven ink absorption.
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Multicolor Printing
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Printing in more than one ink color (but not four-color process). Also called polychrome printing.
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