Ink jet printing head having a piezoelectric driver member

摘要

Disclosed is an ink jet head which ejects an ink drop from an ink room throughout an orifice in response to deformation of piezoelectric member. The ink jet head has a non-piezoelectric member having a groove; a film provided on the non-piezoelectric member to cover the groove, the space formed between the groove and the film being uses as the ink room; a substrate provided opposing to the film; and a piezoelectric member having a first surface, the first surface contacting with the substrate corresponding to the ink room. A part of the first surface is fixedly connected with the substrate. The remaining part of the first surface is facing to the substrate, but is not fixedly connected.