Ink jet recording head assembly

An ink jet recording head assembly comprising:

• a base member having a plurality of enclosures, a top of each of said enclosures having an Opening;
• an ink supply for supplying ink to each of said enclosures via the opening at the top thereof and for maintaining the ink at a predetermined depth;
• and
• an energy operation portion which is provided in each of said enclosures under the ink supplied via the opening, said energy operation portion supplying energy to the ink in each of said enclosures so that a bubble is generated in the ink.
• wherein an ink drop is jetted from a surface of the ink due to the bubble generated in the ink, and wherein said ink supply has a plate on which a channel is formed, said plate being stacked on said base member so that ink flows through the channel and is supplied to each of said enclosures via the opening at the top thereof, a top surface of said channel being open.