Patent ID: 9604453
Date: 2017-03-28
CPC Classifications: B41J

Claim:
1. An element substrate comprising a plurality of heater arrays arranged in parallel and each formed by arranging a plurality of heaters, a plurality of transistors corresponding to the plurality of heaters included in the plurality of heater arrays and configured to drive the plurality of heaters, a first electrode pad configured to supply a voltage to be applied to the plurality of heaters, a second electrode pad configured to ground the plurality of heaters, a first wiring configured to connect the first electrode pad to the plurality of heaters, and a second wiring configured to connect the plurality of heaters to the second electrode pad, wherein sizes of the plurality of transistors included in the heater array, of the plurality of heater arrays, provided at a position where intervals with respect to the first electrode pad and the second electrode pad are relatively large are set to be larger than sizes of the plurality of transistors included in the heater array provided at a position where the intervals with respect to the first electrode pad and the second electrode pad are relatively small.