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...
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What a camera needs to see a streak on a cosmetics carton
To see a streak on a cosmetics carton, the line has to run for several pixels. If it breaks up, check focus first. If you can't see it, change the light or the...
What a camera needs to see an ink-skin spot on a food web
The spot must be solid. Defocus turns it into an ordinary round blot. If you cannot see it, change the light or the resolution first. Do not loosen the threshol...
What a camera needs to see a ring hickey on a pharma label
You must be able to see the centre of the ring. If it smears into one patch, you cannot tell it apart. If you cannot see it, change the light or the resolution...
What a camera needs to see a void on a corrugated preprint
Paper white and ink must separate, and it stays steady only at about 3 pixels. A steady sight needs about 3 pixels. If you cannot see it clearly, do not loosen...
What to record for a lint hickey on a cosmetics carton
Write down the stock lot and when the blanket was washed. You need metres or a sheet number. State whether it hit the brand mark or a brand-colour solid.
What to write down for reticulation on a cosmetics carton
For reticulation on a cosmetics carton, at least write this: the material lot and the viscosity. Miss any one of them and the next shift cannot tell whether a p...
What to write down for fade along the roll on a food web
For fade along the roll on a food web, at least write this: the fountain level and the roller number. Miss any one of them and the next shift cannot tell whethe...
What to record for moiré on corrugated preprint
Moiré on corrugated preprint must at least keep this: the screen angle and the screen ruling of each color. Miss any one and the next shift cannot tell whether...
What to record for foil pinholes on a textured wine label
Foil pinholes on a textured wine label must at least keep this: the temperature, the pressure, and the foil batch. Miss any one and the next shift cannot tell w...