Inkjet head with formed external circuit connecting electrodes

摘要

There are provided driving electrodes ( 25 ) on walls ( 24 ) separating both sides of individual ink chambers ( 22 ) formed in the form of an array of multiple grooves. External circuit connecting electrodes ( 11 ) for connecting these driving electrodes ( 25 ) to an external circuit are formed on exposed surface regions of electrically conductive material ( 10 ) filled in the individual ink chambers ( 22 ) at a rear end portion of a head. Each of the aforesaid exposed surface regions has an area larger than the cross-sectional area of each ink chamber as measured along a direction perpendicular to the ink chamber array.