A printing apparatus comprises: a control unit that controls to apply a voltage from a power supply unit to printing elements for respective groups each including a plurality of printing elements; a memory that stores, for the respective groups, accumulated times during which the voltage is applied; a obtaining unit that obtains the accumulated times for the respective groups; a measurement unit that measures, for the respective groups, voltage application times during which the voltage is applied for a predetermined time; a calculation unit that adds the voltage application times to the accumulated times; an updating processing unit that writes, in the memory, the accumulated times obtained for the respective groups by the addition; and an inhibition processing unit that performs processing for inhibiting use of a printhead when one of the accumulated times obtained for the respective groups by the addition has exceeded a predetermined time.