If the stray printing ink is in paper, float amylacetate over the paper. Do so until the ink loosens. This will likely not work if the paper is very soft and porous.
Brush the loosened ink off the paper with a sponge moistened with benzine. Wait for the paper to dry and it can be reused and printed on again.
To remove ink stains from linen, hold the stained linen against steam. Use weak, diluted hydrochloric acid on the stain by applying it onto a stick and rubbing it gently on the stain. Wash the linen once the stain is out.