Anyone who has purchased, printed or processed a piece of architectural or automotive glass will be acutely aware of the perennially printed "pinhole" (light leak). As the author of this paper explains, this dreaded "dead reckoning" is a void in the coating that exposes the barren glass surface or even worse, daylight.
Origin
Clarke Product Renovation
Journal Title
Glass Worldwide Sept/Oct 2010 70
Sector
Flat glass
Class
F 2989