Remember that ink stains can be very stubborn. So you need to have patience in removing the stain. You can remove the stain with a white towel by either using hair spray, or nail polish remover, or isopropyl in it. Then blot it on the stained part from the outside edges to the inside.
To get rid of a coffee stain, mix one teaspoon of a mild, ph-balanced detergent with one cup of warm water, then blot from the outside in. Follow this with blotting the stain with a mixture of one-third cup white vinegar with two-thirds cup water. When finished, use a clean, white towel to absorb any excess, allow the area to dry.