INK JET HEAD, ELECTROSTATIC ACTUATOR, AND THEIR MANUFACTURING METHODS

摘要

PROBLEM TO BE SOLVED: To solve problems that foreign matters intrude into communicating apertures or openings. SOLUTION: A communicating channel 18 for communicating with one or plural openings 16 is provided. The communicating channel 18 closes in a face where the channel is orthogonal to the face substantially in parallel to the vibration plate 10.