Offset printing is a planographic printing process where both printed and non-printed elements sit almost in one single plane. The method is based on opposing physico-chemical behaviours of certain substances that are ink-accepting and colour-repellent. It is for this reason during the printing process that, before inking the image areas of the printing plate, you must first moisten the non-image areas with a dampening solution consisting of water and an acid-dampening solution additive. Alcohol is also often necessary.
Waterless Offset printing basically eliminates the factor damping solution. It is not a new concept. For decades, printing plate manufactures have been improving their waterless offset plates, but this approach is not yet widespread in the printing industry.
This technique is also known in printmaking, and it seems to be possible to create waterless offset plates by using materials from the hardware store. We gave it a try and made a test.