NOVELTY - Inkjet head has head chip (10) with piezoelectric substrate (1) having first separate ink groove (31), second separate ink groove (32) and separating grooves (14). The horizontal opening of first separate ink groove, horizontal opening of second separate ink groove, and separating groove are respectively connected to the ink passage. The horizontal opening of first and second separate ink groove is respectively opened to end surface (8b,8a) of piezoelectric substrate.    USE - Inkjet head used for e.g. printer used for production apparatus such as liquid crystal production apparatus, solar cell production apparatus.    ADVANTAGE - Eliminates need to perform two-dimensional polar-leading appearance using the surface portion of piezoelectric substrate and allows formation of ink groove with high density with respect to piezoelectric substrate for the electrode by providing the electrode using the piezoelectric substrate three-dimensionally. Head width is made small, scanning distances or head or impact substrate are made small, and tact time is shortened by arranging the wiring board in the thickness direction of piezoelectric substrate. Ensures cost reduction by making the number of removal of the head chip into maximum. The position of nozzle hole with respect to the positioning unit after mounting the inkjet head in printer or drawing apparatus is manageable with high precision when attaching the head chip on the head holder by positioning the head chip based on positioning unit, thus replacement of the inkjet head and impact correction do not take time, but production loss is suppressed to minimum. Stress to the head chip accompanying the expansion-contraction of adhesive agent is restrained and stable discharge characteristic is acquired since adhesive agent is made thin as possible. Melting of wiring board by ink and elution are prevented since connection portion of wiring board does not directly contact with the ink by wiring board recessed portion. Discharge characteristic is stabilized and impact precision and discharge amount are stabilized since relative position between heads is decided by the processing precision of nozzle hole of the nozzle plate attached with respect to the head. Width of the separating groove is changed easily since separating groove is made with common ink chamber that supplies or discharges ink with respect to the first head. Drive voltage variation and discharge velocity variation are made small and discharge characteristic is stabilized since variation in the piezoelectric characteristic of piezoelectric substrate is suppressed to minimum.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a manufacturing method of the inkjet head.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the head chip in which separating groove is formed between the first head and second head.    Piezoelectric substrate (1)    End surface (8b,8a)    Head chip (10)    Separating grooves (14)    First separate ink groove (31)    Second separate ink groove (32)