Patent ID: 7625072

Claim:
An ink jet recording apparatus comprising: an ink jet recording head, including a supporting member comprising a liquid supply hole, a liquid discharge substrate comprising a liquid supply port communicating with the liquid supply hole, a discharge port from which liquid supplied from the liquid supply port is discharged, and discharge energy generation means that generates energy for discharging the liquid from the discharge port, wherein the liquid discharge substrate is mounted on the supporting member through a foil-shaped heat dissipation member, the area of the heat dissipation member is larger than a projected area of the liquid discharge substrate with respect to the supporting member, and the liquid discharge substrate is mounted on the supporting member through the heat dissipation member, and wherein the liquid discharge substrate and the supporting member are bonded by a bonding agent, and a channel is formed between the liquid supply port of the liquid discharge substrate and the liquid supply hole of the supporting member by boundary surfaces of the bonding agent; and a head retaining member that retains the ink jet recording head in a position facing a recording medium.