Printing Glossary – Terms starting with H

Printing Glossary – Terms starting with H

 

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Hairline (Rule)

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

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

Halftone

Using small dots to produce the impression of a continuous-tone image. The effect is achieved by varying the dot size and the number of dots per square inch.

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.

Halo Effect

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

Hard Dots

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

Hard Mechanical

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

Head(er)

At the top of a page, the margin

Head-to-tail

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

Heat-set Web

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

Hickey

The effect that occurs when a spec of dust or debris (frequently dried ink) adheres to the printing plate and creates a spot or imperfection in the printing.

High-fidelity Color

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

High-key Photo

Photo whose most important details appear in the highlights

Highlights

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

Hinged Cover

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

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

Hot melt

An adhesive used in some binding processes, which requires heat for application.

Hot Spot

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

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

Hue

A specific color such as yellow or green