Representing the level of a printed colour (or black) with dots of varying size and frequency.
Halftoning
A method of positioning dots of primary colours in order to achieve the appearance of any variety of secondary colours.
Hardwood Pulp
Pulp obtained from deciduous trees (short fibres) which gives good printing quality and imparts high bulk, compressibility and good opacity to the paper.
HCVF
High Conservation Value Forest. An area of forest considered to contain important attributes, e.g. a habitat for endangered species.
Headstrike
When paper curls or cockles in an inkjet printer so that it comes into contact with the print head.
Heat Transfer
The process of image transfer to substrate by application of heat.
Heavy Metals
Toxic chemicals found in some pigments including lead, chromium, cadmium.
Hexachrome
C - cyan; M - Magenta; Y - Yellow; K - Black; O - Orange; G - Green
High Bulk Paper
Paper stock that is comparatively thick in relation to its basis weight.
Holdout
Coated paper with low ink absorption has good holdout. The ink sets on the surface of the paper and tends to be sharper.
