Which one is the cylinder for pad printing machine

Hello, do you want to ask which one of the pad printing machines is the cylinder? The pad printing machine is located inside is the cylinder. Pad printing machine is a kind of printing equipment, after opening the pad printing machine shell to reveal the parts inside, there is a cylinder in this direction inside, so the pad printing machine is located inside the cylinder. Pad printing machine is a kind of printing equipment, suitable for plastic, toys, glass, metal, ceramics, electronics, IC seal and so on. Pad printing is an indirect concave adhesive head printing technology, has become a major method of printing and decorating the surface of various objects.