Liquid discharging head

A printing apparatus comprising:

• a printing element substrate including
• a heating element configured to heat liquid to discharge the liquid from a discharging opening,
• a substrate including the heating element, and
• a temperature detecting element configured to detect a temperature of the substrate,
• wherein a detection period, during which a result of detecting the temperature of the substrate by the temperature detecting element is obtainable, extends across a plurality of cycles of a latch signal periodically input to the printing element substrate,
• wherein a heating enabling signal, to be applied to the heating element, for discharging the liquid and the latch signal are output in such a manner that, in the detection period, an output value of a temperature waveform at a portion on which noise generated due to driving of a logic circuit of the printing element substrate based on the latch signal is superimposed does not exceed a preset threshold value, the temperature waveform being a temperature waveform of the substrate detected by the temperature detecting element,
• wherein the printing element substrate includes a mask signal generation unit configured to generate a mask signal, and
• wherein the detection period is a period during which the mask signal is output at a high level.