Patent ID: 8099854

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; 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 an edge direction of the vibrating membrane supporting portion and an edge direction of the groove of the handling member intersect, and wherein a solution for removing the handling member from the element is supplied to the groove in the removing of the handling member.