It is extremely difficult to remove ink stains after washing and drying stained clothing, according to About.com. Treat ink stains before laundering for best results.
To remove water-based ink stains from clothing, place the clothing on a towel, and wipe down with a wet cloth, recommends About.com. The ink moves from the clothing to the cloth. Pour a bit of liquid laundry detergent onto the clothing, and let stand for three to five minutes. Launder the clothing in the hottest water permissible as stated on the clothing's care tag. If the stain is still present after washing, repeat the process until the stain is gone. To remove permanent ink and ballpoint ink, follow a similar procedure, but use rubbing alcohol or nail polish remover to treat the stain.