Print Glossary
  • Hairline (Rule)

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    Subjective term referring to very small space, thin line or close register. The meaning depends on who is using the term and in what circumstances.

  • Half-scale Black

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    Black separation made to have dots only in the shadows and midtones, as compared to full-scale black and skeleton black.

  • Halftone

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    (1) To photograph or scan a continuous tone image to convert the image into halftone dots. (2) A photograph or continuous-tone illustration that has been halftoned and appears on film, paper, printing plate or the final printed product.

  • Halftone Screen

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    Piece of film or glass containing a grid of lines that breaks light into dots. Also called contact screen and screen.

  • Halo Effect

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    Faint shadow sometimes surrounding halftone dots printed. Also called halation. The halo itself is also called a fringe.

  • Hard Dots

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    Halftone dots with no halos or soft edges, as compared to soft dots.

  • Hard Mechanical

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    Mechanical consisting of paper and/or acetate and made using paste-up techniques, as compared to electronic mechanical.

  • Head(er)

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    At the top of a page, the margin.

  • Head-to-tail

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    Imposition with heads (tops) of pages facing tails (bottoms) of other pages.

  • Heat-set Web

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    Web press equipped with an oven to dry ink, thus able to print coated paper.

  • Hickey

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    Spot or imperfection in printing, most visible in areas of heavy ink coverage, caused by dirt on the plate or blanket. Also called bulls eye and fish eye.

  • High-fidelity Color

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    Color reproduced using six, eight or twelve separations, as compared to four-color process.

  • High-key Photo

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    PPhoto whose most important details appear in the highlights. .

  • Highlights

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    Lightest portions of a photograph or halftone, as compared to midtones and shadows.

  • Hinged Cover

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    Perfect bound cover scored 1/8 inch (3mm) from the spine so it folds at the hinge instead of, along the edge of the spine.

  • HLS

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    Abbreviation for hue, lightness, saturation, one of the color-control options often found in software, for design and page assembly. Also called HVS.

  • Hot Spot Film

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    Printing defect caused when a piece of dirt or an air bubble caused incomplete draw-down during contact platemaking, leaving an area of weak ink coverage or visible dot gain.

  • House Sheet

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    Paper kept in stock by a printer and suitable for a variety of printing jobs. Also called floor sheet.

  • Hue

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    A specific color such as yellow or green.