
Spend fifty-fifty a modest total of fourth dimension inwards a printshop as well as you'll chop-chop realize how much examine press operators seat into scrutinizing their presswork through a loupe. The 2 things they're typically looking for are clear centered rosettes - this tells them that the presswork is inwards register – as well as impress problems revealed past times how good private letters of type are reproduced inwards print.
Here's how type printed kickoff reveals problems:
Normal ink transfer - no apparent problems.
Doubling HERE Slur HERE Over emulsified (a.k.a. emulsified, H2O logged) 
Ink is designed to conduct keep a modest total of H2O (fountain solution) on press. Too much H2O appears every bit tiny droplets inwards company areas as well as reduces gamut, icon sharpness, contrast, as well as increases dot gain.
Tailing (a.k.a. misting, slinging) 
Too high a company ink density or ink that's also "long" tin campaign sparse "tails" of ink strands to appear extending behind the main icon causing a loss of sharpness, contrast as well as an increment inwards dot gain.
Picking (a.k.a. pinholing) 
Small white specks appear inwards solids. This unremarkably results because the ink tack is also high or at that spot is non plenty impression cylinder pressure level ("squeeze").
Ink breakdown 
On press, outflow solution acts similar a solvent. If it is also aggressive or acidic it tin intermission downwards the ink that forms the icon resulting inwards presswork that appears dingy and/or "soft." It also reduces total gamut because it reduces overprint trapping efficiency.
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