Quote:
Originally Posted by Pup6913
Could it be possible that the paper stock is different and it has a higher acid content in one causing the fading of the ink??
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In my opinion what can be seen as color variations are likely a matter of how much ink was applied to the card. The darker Uzit backs are like the darker Sweet Caporal 649 over prints where it appears the amount of ink in the earlier runs was much heavier than the amount in the later runs. As the amount of ink tapered off it resulting in a lighter looking color. In both cases a noticeable amount of paper either does or doesn't show through the printed area. I believe a careful examination of the color that is there on the lighter looking examples shows it is the same color just less of it making it appear lighter.
