A heater control device of an oxygen concentration sensor is provided in which even in a case where an internal combustion engine is automatically stopped by idle stop control after cold start-up, it is possible to start energization of a heater at an appropriate time. The compositions of matter are amino acid and peptide heteroconjugated disulfides of 2-mercaptoethane sulfonate sodium. A plurality of terminals which receive a driving signal and a control signal that are used to drive the plurality of printing elements are arranged at the end of the board in the longitudinal direction of the board at positions opposite to the array of the plurality of printing elements.