Pad printing has a very long history. Small manual machines were available in the old days. Companies from Switzerland used this technique for printing on watch dials. It’s development started in the late 60s early70s. In earlier days gelatin was used as a pad material. Plates were mechanically engraved. Cleaned was done by hand process. A major development came in this industry when cold vulcanized silicon rubber was introduced instead of gelatin and introduction of solvent-based inks. Because of this, printing on wet-on-wet was possible. No intermediate drying was required. Due to this, four colour printing was possible in one go. Most plastic industry who were manufacturing household items got huge benefit. Since then, it grew many times. New technologies of electromechanical and electro-pneumatic were adopted. Many automations are using this technology.