What Does a Hickey Look Like, and When Should You Stop the Press?
A hickey is a printed speck with a white ring, made by a particle on the plate or blanket. Stop when that mark repeats in the same place, or when it sits on a b...
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How Much Misregistration Should a Label Press Allow?
Hold colour-to-colour register near 0.25 mm, and print-to-die near 0.5 mm, on an ordinary narrow-web label. Tighten both when a border, a small label or a regul...
How Tight Should a Delta E Tolerance Be on Press?
Match the tolerance to the reference, not to a single house number. ISO 12647-2:2013 allows an offset OK sheet within ΔEab 5 of the aim, and at least 68% of the...
What Is Print Quality Inspection? A Plain-Language Overview
Print quality inspection is the process of checking printed output against a reference to find defects such as colour drift, misregistration, spots and missing...