Element substrate, liquid discharge head, and printing apparatus

An element substrate of multi-layer structure comprising:

• an electrothermal transducing element formed in a first layer;
• a protective film covering the electrothermal transducing element;
• an anti-cavitation film formed on the protective film and for protecting the electrothermal transducing element from a shock;
• a first electrical wire formed in the same layer as the anti-cavitation film, in a direction orthogonal to a planar face of the element substrate, a portion of the first electrical wire being arranged to be separated from the anti-cavitation film, and electrically connected to at least one end of the electrothermal transducing element;
• a second electrical wire formed in a second layer that is positioned on an opposite side of the protective film with respect to the electrothermal transducing element;
• and
• a first connection member that extends between the first layer and the second layer, that electrically connects the first electrical wire and the second electrical wire, and that is arranged to be separated from the electrothermal transducing element in the direction orthogonal to the planar face,
• wherein the anti-cavitation film and the first electrical wire are provided so as not to overlap with each other in the direction orthogonal to the planar face.