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HALFTONE
A method of screening a continuous tone image (like
a photograph) for printing or reproduction. The dots in the screen
vary in size and density, so as to recreate the complete range of
highlights, lowlights, and mid-tones in the original image.
HALOS
Lines around print caused by excessive ink, or excessive
plate impression.
HANG TAG
A term used to describe fold-over labels generally
used for product identification. These products usually "hang"
in the retail marketplace.
HEAT SEAL LABELS
Label paper that has a coating which melts under
heat to form the bonding agent.
HEAVY COAT WEIGHT
A higher-than-standard weight of coating per unit
area.
HICKEY
A piece of foreign matter in paper, or a similar
defect. A burr or defect on the printing plate.
HIGH GLOSS PAPER
A cast-coated gloss paper that features high strength
material and excellent ink receptivity.
HOLDING POWER
The ability to withstand stress, involving both
adhesive and cohesive strength. The term usually refers to rigid
label materials on small diameter cylindrical objects.
HOT MELT ADHESIVER
Thermoplastic materials with 100% solids that liquefy
when heated and re-solidify when cooled to form a bond with the
face sheet that the adhesive was applied to. Also forms a pressure
sensitive lamination which includes a release coated backing sheet.
Also see Adhesives: Hot Melt.
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