Disclosed is a mixer 1 for mixing at least two components a dental material having a drive shaft 20. The computer-TV system is separated into a TV operating module and a computer operating module, individually. After the printing, the image on the printing form can be erased by supplying heat; a method for forming images on a printing form and for erasing them; and a printing unit and a printing press including the printing form. As a result, the silicon oxycarbide isolation insulator advantageously provides reduced noise and signal crosstalk between circuit nodes, reduced power consumption, faster circuit operation, and minimizes the risk of potential timing faults.