Printing press

The other day I was watching a tv program that featured printing press.They talked about the Anilox roll cleaning system they have.They have to maintain the cleanliness of anilox roller and use anilox cleaners that are safe to the employees and environment.I remembered,my uncle had a small printing press before and I always see him lots of ink in his hands and at his body.Unfortunately his business was closed due to financial problem.But I guess his other family members are still in the printing press business up to now.