Halftone

Tone graduated image composed of varying sized dots or lines, with equidistant centers.

Halftone Paper

A high finish paper that is ideal for halftone printing.

Halftone Screen

A sheet of film or glass containing ruled right-angled lines, used to translate the full tone of a photo to the halftone dot image required for printing.

Hard Dot

The effect in a photograph where a dot has such a small degree of halation that the dot shows quite sharp.

Head Margin

That space which lies between the top of the printed copy and the trimmed edge.

Hickies

Imperfections in presswork due to dirt on press, trapping errors, etc.

High Bulk Paper

Paper stock that is comparatively thick in relation to its basis weight.

High Key Halftone

A halftone that is made utilizing only the highlight tones down through the middle tones.

Highlight Dot

The highest density of a halftone image.

Highlights

The lightest tones of a photo, printed halftone or illustration. In the finished halftone, these highlights are represented by the finest dots.

Hollow

That space on the spine of a case bound book between the block of the book and the case binding.

Hot Melt

An adhesive used in the binding process, which requires heat for application.

House Sheet

This is a term that refers to a paper that a printer keeps on hand in his shop.

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