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Densitometer
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A device used to measure density.
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Density
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In regard to ink, the relative thickness of the layer of printed ink. Also known as Ink Density.
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Density Range
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The range from the smallest highlight dot to the largest shadow dot.
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Die
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Hand built device used for cutting, scoring, stamping, embossing or debossing.
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Die Cutting
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The use of sharp steel rules to cut special shapes from printed sheets.
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Dot Gain
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Enlargement of the halftone dot between plate and print, which is assessed and compensated for in reproduction.
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Double Hit
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Printing a single plate twice (usually black) so it has two layers of ink, usually used to make darker blacks when running a 2-color print job instead of using 4 process colors to make a rich black.
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DPI
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"Dots Per Inch". The number of dots that fit horizontally and vertically into a one inch area. A general rule, the higher the DPI, the sharper the printed image.
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Drawdown
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A on-press test of ink color on actual paper stock that will be used for the job to evaluate how it will look.
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Dry Back
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Printed ink colors becoming less dense or vivid as the ink dries.
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Dry Trap
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Printing over dry ink with a separate pass on the press.
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Dummy
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A sample of a proposed job made up with actual materials, cut to correct size to show bulk, weight, style and binding. It is also a complete layout of a job showing position of images and type, illustrations, page order, etc.
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Duotone
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Reproduction of a black and white image in two colors, usually black and another color. One color usually is assigned to the highlight areas while the other stresses shadows.
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