Ink jet recording head and method for manufacturing the same

An ink jet recording head comprising:

• a substrate having a plurality of discharge energy generation elements arranged in two rows and having an ink supply port formed between the two rows of the plurality of discharge energy generation elements;
• a protective film provided on the substrate and configured to protect wiring connected to the discharge energy generation elements;
• and
• an ink discharge port forming member forming an ink flow path communicating with the ink supply port between the ink discharge port forming member and the substrate and having an ink discharge port communicating with the ink flow path at a position corresponding to each of the discharge energy generation elements,
• wherein the protective film has a protruding portion, which protrudes from the substrate toward the ink supply port side,
• wherein the ink discharge port forming member has a beam-like protrusion over the ink supply port between the ink discharge port forming member and the substrate,
• wherein the beam-like protrusion has a reinforcing rib extending toward the substrate side, and
• wherein a separation film containing gold is formed at a portion where the protruding portion and the reinforcing rib are held in close contact with each other.