Liquid discharge head and manufacturing method of the same

A method for manufacturing a liquid discharge head including a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a chamber adapted to store the energy required to discharge liquid which is generated by the energy generating element, a discharge portion configured defining a fluid path connecting the chamber and the discharge port, and a supply path facilitating supplying the liquid into the chamber, the method comprising:

• forming a removable material layer including a first layer directly disposed on the substrate and a second layer disposed on the first layer, wherein the first layer and the second layer are formed by a positive light-sensitive resin;
• exposing the first layer to the light via the second layer;
• developing and removing the exposed first layer so as to leave a portion where the first layer is partly not present between the second layer and the substrate;
• forming a coating resin layer on the second layer;
• forming a portion where the second layer is uncovered by the coating resin layer, at a region opposing the supply path of the chamber in the supply direction of the liquid;
• and
• removing the second layer via the portion where the second layer is uncovered so as to form a hollow portion to which liquid to be discharged does not flow and having a bottom surface apart from the substrate.