Liquid ejecting head chip, liquid ejecting head, liquid ejecting apparatus, and manufacturing method of liquid ejecting head chip

Abstract

According to an embodiment, an ink jet head (liquid ejecting head) includes an actuator plate and a cover plate (see FIG.). As illustrated in FIG., channel grooves for a discharge channel (ejection channel) and a non-discharge channel (non-ejection channel) in a Z-direction are formed on a front surface of the actuator plate, so as to be alternately arranged in an X-direction, by cutting with a dicing blade or the like. The discharge channel and the non-discharge channel are formed to have a groove width W of smaller than 70 μm, in order to correspond to high density of nozzles. In the embodiment, the discharge channel and the non-discharge channel are formed to have a groove width of 55 μm, 50 μm, or 40 μm, for example.