Where possible, do not exceed 300% ink coverage within your design file. High ink coverage takes longer to dry and may result in set-off and a delay to your job. You can work out the total ink cover percentage by adding together the C, M, Y and K values.
We use corrective software to reduce any ink coverage above 300% down to 300% by altering the CMYK values to produce a similar colour. This can be avoided, however, by ensuring colours are a maximum of 300%.