Glossary
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- Hairline register
- Register within + ½ row of dots.
- Halftone
- The reproduction of continuous-tone images, through a screening process, which converts the image into dots of various sizes and equal spacing between centres.
- Hard copy
- A proof on paper or other substrate as distinguished from a soft proof, which is an image on a VDT, screen.
- Hardware
- Computer and peripherals as distinguished from software, which is a program for operating hardware.
- Head margin
- The white space above first line on a page.
- Hickeys
- In offset lithography, spots or imperfections in the printing due to dirt on the press, dried ink skin, paper particles, etc.
- High contrast
- In photography, a reproduction with high gamma in which the difference in darkness (density) between neighbouring areas is greater than in the original.
- Highlight
- The lightest or whitest parts in a photograph represented in a halftone reproduction by the smallest dots or the absence of dots.
- Holdout
- In printing, a property of coated paper with low ink absorption, which allows ink to set on the surface with high gloss Papers with too much holdout cause problems with set-off.
- Hue
- In colour, the main attribute of a colour, which distinguishes it from other colours.