Patent ID: 8087152

Claim:
A manufacturing method of an electromechanical transducer, said electromechanical transducer having an element comprising: a substrate; a vibrating membrane; and a vibrating membrane supporting portion to support the vibrating membrane so that a space is formed between the substrate and the vibrating membrane; said manufacturing method including fixing a handling member to a face on a vibrating membrane side of the element, using the space as a reference; processing a face on an opposite side from the vibrating membrane side of the element; and removing the handling member from the element, wherein the handling member has a groove including a rectilinear edge on a face to be fixed to the element, and in the fixing of the handling member, the groove configures a portion of a channel to externally communicate in a state of the handling member being fixed to the element, and wherein the handling member is fixed so that a cleavage direction of the vibrating membrane and an edge direction of the groove of the handling member intersect.