Liquid discharge apparatus and image forming apparatus

A liquid discharge apparatus which discharges a liquid, comprising:

• a liquid discharge head including:
• a channel unit formed with a plurality of nozzles through which the liquid is discharged and a plurality of liquid channels which communicate with the nozzles respectively;
• a plurality of drive portions having a plurality of electrodes corresponding to the nozzles respectively and a deforming portion which is deformed to apply a jetting pressure to the liquid stored in the liquid channels according to a driving pulse applied to the electrodes;
• a plurality of lead portions which correspond to the electrodes, which are connected electrically to the electrodes and which are arranged to cover the electrodes while maintaining a space between the electrodes and the lead portions;
• and
• a plurality of input terminals each of which is formed integrally on a surface, of one of the lead portions, not facing the electrodes and which are electrically connected to the electrodes via the lead portions;
• and
• a circuit board via which the driving pulse is applied to the liquid discharge head, and which has a plurality of connecting terminals electrically connected to the input terminals, respectively;
• wherein each of the lead portions stands on an entire edge portion of one of the electrodes, and covers the one of the electrodes entirely.

A liquid discharge apparatus which discharges a liquid, comprising:

• a liquid discharge head including:
• a channel unit formed with a plurality of nozzles through which the liquid is discharged and a plurality of liquid channels which communicate with the nozzles respectively;
• a plurality of drive portions having a plurality of electrodes corresponding to the nozzles respectively and a deforming portion which is deformed to apply a jetting pressure to the liquid stored in the liquid channels according to a driving pulse applied to the electrodes;
• a plurality of lead portions which correspond to the electrodes, which are connected electrically to the electrodes and which are arranged to cover the electrodes while maintaining a space between the electrodes and the lead portions;
• and
• a plurality of input terminals each of which is formed integrally on a surface, of one of the lead portions, not facing the electrodes and which are electrically connected to the electrodes via the lead portions;
• and
• a circuit board via which the driving pulse is applied to the liquid discharge head, and which has a plurality of connecting terminals electrically connected to the input terminals, respectively;
• wherein each of the lead portions has a pair of leg portions standing on a facing surface, of one of the drive portions, facing the circuit board;
• and a terminal forming portion in the form of a plate bridging between the pair of leg portions, and
• wherein each of the input terminals is arranged on the terminal forming portion.