Glossary
Plain-language definitions of the terms used in print quality inspection.
5 terms
100% Inspection
100% inspection means every repeat on the web or every sheet is imaged and evaluated automatically by a camera system, as opposed to sampling a fraction of the output. It...
Read definition →Delta E (ΔE)
Delta E is a single number describing the perceived colour difference between two colours in CIELAB space. A ΔE00 below 1 is generally invisible to the human eye; commerc...
Read definition →Hickey
A hickey is a small, usually ring-shaped print defect caused by a particle of dried ink, paper dust or debris on the plate or blanket. It appears as a solid spot surround...
Read definition →ISO 12647
ISO 12647 is the international standard series that defines process control aims and tolerances for the main printing processes. Part 2 covers offset lithography and is t...
Read definition →Misregistration
Misregistration is the misalignment of two or more printed colours or layers relative to each other, visible as coloured fringes or blurred edges. It is caused by web ten...
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