LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

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LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

This abstract first appeared for US patent application 18897781 titled 'LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

Original Abstract Submitted

To provide a liquid ejection head capable of implementing both improvement of reliability and downsizing at the same time. The liquid ejection head comprises an element substrate ejecting liquid, an electrical wiring substrate electrically connected to the element substrate, and a liquid storage portion configured to store liquid to be supplied to the element substrate. On the first face of the electrical wiring substrate, an electrical part generating heat in a case where power input from the outside for ejecting liquid is controlled is provided. The liquid storage portion is provided on the first face side of the electrical wiring substrate. The electrical part and the liquid storage portion are not provided at positions opposite to each other in a case of being viewed from a direction perpendicular to the first face.