Patent ID: 9688067
Date: 2017-06-27
CPC Classifications: B41J

Claim:
1. An element substrate comprising: a plurality of printing elements configured to generate energy to be used to discharge liquid; a first delay buffer group formed by series-connecting a plurality of buffer circuits in which a heat enable signal to be used to drive the printing element is transferred while being delayed by the plurality of buffer circuits; a second delay buffer group formed by series-connecting a plurality of buffer circuits in which the heat enable signal is transferred while being delayed by the plurality of buffer circuits in a direction different from an arrayed direction of the plurality of buffer circuits of the first delay buffer group; and a switchover circuit configured to switch over, in accordance with a control signal, a delay sequence in a case where using the heat enable signal to drive each of the plurality of printing elements by switching over between the first delay buffer group and the second delay buffer group.