Glossary of Printing & Digital Media Terms

There are 2136 entries in this glossary.
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Term Definition
H & J:

Hyphenation and justification.

Hairline Register:

Subjective term referring to very close register.

Hairline Rule:

The thinnest rule that can be printed. Not to be used for high-resolution output.


Thinnest visible space or rule. Because visibility is determined by factors such as contrast between ink and paper, hairline has no precise measure.


In photography, a blurred effect, resembling a halo, usually occurring in highlight areas or around bright objects.

Half Web:

Web press whose width and cutoff allow printing eight 8-1/2" x 11" pages on one press sheet.

Half-scale Black:

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

Half-web Press:

Web offset press that measures 173/4" by 26".

Halftone Dots:

The individual subdivisions of a printed surface created with a halftone screen.

Halftone Gravure:

Production of gravure cylinders using halftone prints.

Halftone Mottle:

A blotchy appearance in halftone tints instead of an even, consistent appearance.

Halftone Paper:

A high finish paper that is ideal for halftone printing.

Halftone Screen:

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

Halftone Step Scale:

An image used to test the accuracy of printing process. The image is composed of a sequence of uniform tints, each with progressively larger dots. In practice, the test is printed within the trim margin of the sheet or on a film flat. Other Term: step wedge; gray scale; step tablet.

Halftone Tint:

A halftone composed of a single dot size (or line width) and frequency. The result creates the appearance of a single color or tone. See also: screen tint; tint.

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