9. What is overprint, and how can it ruin my file?
Primarily used to intentionally overlap inks
for a number of reasons, over print can cause
unexpected results. We suggest that you turn
all over print objects off before submitting your files.
On screen view After Printing
In this case the logo was set to overprint. The colors from
logo are mixing with the colors from the background.
Unexpected results may occur if you have accidentally
set certain objects to overprint. Always check logos and
other artwork before submitting.