| 摘要 |
Aggregation of conductive particles in an adhesive is suppressed around channels between a head chip and a wiring substrate, and occurrence of a short circuit due to the aggregation of the conductive particles is avoided. An inkjet head comprises: a head chip 1 that has a channel column in which drive channels from which an ink is discharged and dummy channels 11b from which the ink is not discharged are alternately arranged, and also has connection electrodes 14b, which achieve electrical conduction with drive electrodes 13 in the channels, formed on the rear surface thereof; and a wiring substrate 3 that is joined to the rear surface 1b of the head chip 1 to cover the channel column, has wiring electrodes which are electrically connected to the connection electrodes 14b, and has ink supply through holes at positions associated with opening portions of the drive channels, the connection electrode 14b of each dummy channel 11b is formed so as to surround the opening portion 110 of the dummy channel 11b, and a particle diameter of the conductive particles 61 is equal to or less than a gap a between a rear surface 1b of the head chip and a front surface of the wiring substrate 3 and larger than a gap c between the connection electrodes 14 on the rear surface 1b of the head chip and the front surface of the wiring substrate 3. |
