HALF PERF - a perforation line that extends across only part of the paper width.
HALFTONE - a tonal gradation made up of dots of varying sizes.
HALFTONE SCREEN - a grid of equidistant lines and spaces used in plate or block making.
HATCHING - irregular ink patterns that are printed on top of text or on the inside of an envelope to make the contents unreadable, usually for confidentiality reasons.
For a quote or for friendly advice, please contact Palladian Press at:
Unit E, Chandlers Row, Port Lane, Colchester, Essex CO1 2HG
Telephone: 01206 799065
Email: info@palladianpress.co.uk
Web: www.palladianpress.co.uk