Piezoelectric unit for use as e.g. print head for ink jet printer, has supporting body electrically contacted by piezoelectric inactive material, which is glass fiber reinforced plastic overlying in contacting region of body

摘要

The unit has an electrically conductive supporting body (2), and a piezoelectret (4) applied on the body. The body is electrically contacted by a piezoelectric inactive material, which is a glass fiber reinforced plastic (6) or a ceramic such as non-polarized piezo-ceramic, which overlies in a contacting region of the body. The body is made up of an electrical insulating material, and an internal electrode (15) is arranged between the body and the electret.