A selection circuit for an electro-thermal printer with a resistance-type ribbon includes a print unit, a current collection electrode, a memory, and a print control unit. The resistance-type inking ribbon that is moved relatively transfers ink particles from an ink layer into areas on a receiving medium when an associated thermal resistance in a resistance layer is heated. A voltage drop that is caused by a total current and by a variance of the resistances is measured through a non-selective current path (feedback layer) in the resistance inking ribbon by a measurement electrode that is disposed close to the print head. That causes a constant voltage source which has a reference voltage input to apply feed voltage to the electrodes that are temporarily connected therewith through a switching unit.