Printing apparatus

A printing apparatus, comprising:

• a main body in a box shape;
• a cassette including a cassette case in a box shape and a printing medium accommodated in the cassette case;
• an installing portion provided on the main body, the cassette being detachably installed in the installing portion;
• a thermal head arranged on a substrate provided in the installing portion, the thermal head having heating elements arranged along a predetermined arrangement direction;
• a conveyor configured to convey the printing medium of the cassette installed in the installing portion along a conveyance path orthogonal to the predetermined arrangement direction;
• a first temperature sensor provided, in the installing portion, on a side of the thermal head with respect to the conveyance path;
• a second temperature sensor provided in any one of an interior of the cassette case and the installing portion;
• and
• a processor configured to:
• correct an amount of applying energy to be applied to the heating elements, based on a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor;
• and
• apply the corrected amount of the applying energy selectively to the heating elements to cause the heating elements to generate heat, and carry out printing by heating the printing medium with the heat generated,
• wherein the cassette case includes a head insertion wall portion,
• the head insertion wall portion forms a head insertion opening which penetrates the cassette case in a direction in which the cassette is installed in the installing portion,
• the substrate is inserted in the head insertion opening in an installed state in which the cassette is installed in the installing portion, and
• in the installed state, the first temperature sensor is arranged inside the head insertion opening and the second temperature sensor is arranged inside the cassette case.