Printing Terms Glossary
Hairline Registration – Registration of printing images that is within plus or minus 1/2 row of dots.
Halftone
– A reproduction of a continuous tone image through a screening process
which converts the image into a dot pattern.
Halo Effect – A printing term which describes a defect represented
as a faint shadow surrounding printed halftone dots, typically occuring in
highlight areas or around bright objects. Also referred to as halationand
a fringe.
Hard Dots – Halftone dots with no halos or soft edges, as compared
to soft dots.
Head-to-Tail – Imposition with heads (tops) of pages facing tails
(bottoms) of other pages.
Heat-Set Web – A web press that is equipped with an oven to quickly
dry ink, thus allowing it to print coated paper.
Hickey – A printing term which describes a spot or imperfection,
most visible in areas of heavy ink coverage, caused by dirt or paper particles
on the plate or blanket.
High-Fidelity Color – Color reproduced using six, eight or twelve
separations, as compared to four-color process.
High-Key Photo – A prepress term referring to a photo which has
its most important details appearing in the highlight areas.
Highlights – A general imaging term referring to the lightest
portions of a photograph or halftone image, as compared to midtones and shadows.
Hinged Cover – A bindery term which refers to a 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.
Holdout
– A paper term referring to a property of coated paper with low ink absorption
which allows ink to set on the surface with a high gloss level. Papers with
too much holdout can cause off-setting problems.
Hot Spot – A 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
List - A direct mailing term referring to a customer file or database
of names of previous responders and/or customers that is owned by the company
doing the mailing. There is no charge to use these names, and can be mailed
as often as the company chooses.
House Sheet – A paper kept in stock by a printer that is suitable
for a variety of printing jobs. Also referred to as a floor sheet.
Hue – The primary attribute of a color which distinguishes it
from other colors.
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