Patent ID: 7536785

Claim:
A method for manufacturing a droplet ejection head, comprising: a step of forming recessed sections for forming nozzles by etching half-way through a first face of a silicon substrate; a step of bonding a support substrate to the first face of the silicon substrate; a step of reducing the thickness of the silicon substrate by processing a second face of the silicon substrate that is opposite to the first face thereof, and making the recessed sections through holes; a step of forming an ink-resistant protective layer and an ink-repellent layer on the second face of the silicon substrate, this step being performed subsequently to the step of reducing the thickness of the silicon substrate; a step of bonding a second support substrate or a tape to the second face of the silicon substrate; and a step of removing the first support substrate from the silicon substrate in such a state that the second support substrate or the tape is bonded to the silicon substrate.