Dear all, When we mix opaque white ink with other inks and print a proof everything is ok. After 24 hours the color become more yellowish, but the color of the sheets which we kept in a special folder for archiving still OK!! Any ideas or similar cases are appreciated. Thanks in advance.
You did not mention WHAT paper you used -coated/uncoated/gloss?- If uncoated ink sets more deeply in paper thus your change of hue
Not familiar with it but try a small test: let one sheet in a drawer and one sheet out and measure both samples -not printed sheets- just to see if paper is affected by surrounding conditions. If you have a spectrophotometer read their Lab values too
Thanks mantman for replying. I'm too busy the next couple of days. I will try the test and send you the feedback.