For those who like looking at spreadsheets full of figures, here's a brief recap of how the print samples are scored. We've marked each print segment on a scale from 1 to 10, where:
10 - no discernable fade
8-9 - slight fade, but still usable
7 - noticeable fade, borderline usability
5-6 - considerable fade, print unlikely to be used
0-4 - severe fade, unusable
We added up the scores for each ink on the five different papers we used to give an overall score. We've also introduced a score of 0, for prints which either show no image at all - complete fade - or where the print has broken up and is unusable.