Patent ID: 7287847

Claim:
An ink jet recording head which discharges ink to perform recording, comprising: a silicon substrate comprising a plurality of energy generation elements for discharging the ink, and an ink supply port for supplying the ink to the energy generation elements; a channel forming member for forming a plurality of discharge ports for discharging the ink, corresponding to the plurality of energy generation elements, and a plurality of ink channels allowing the plurality of ink discharge ports to communicate with the ink supply port; and a close contact enhancing layer constituted of an organic film formed between the channel forming member and the substrate, wherein a filter is formed by the close contact enhancing layer in an opening of the ink supply port on a side of the channel forming member, wherein the channel forming member comprises a support member for supporting the filter in a region of a part of the opening of the ink supply port, and wherein the plurality of discharge ports comprises a first discharge port row constituted of first discharge ports for discharging first liquid droplets, and a second discharge port row constituted of second discharge ports for discharging liquid droplets larger than the first liquid droplets in such a manner that the ink supply port is disposed between the first and second discharge port rows, and the filter is partitioned into a filter for the first discharge port row and a filter for the second discharge port row by the support member.