Method for manufacturing liquid discharge head

A method for manufacturing a liquid discharge head provided with a plurality of discharge ports for discharging liquid;

• a plurality of liquid flow paths, each one end thereof being communicated with each of said discharge ports, having bubble generating area for generating a bubble in liquid;
• means for generating a bubble to generate energy for creating said bubble to be grown;
• a plurality of liquid supply ports, each being arranged for each of said plurality of liquid flow paths to be communicated with a common liquid supply chamber;
• and movable members, each having fixed portion and movable portion supported with gap with said liquid supply port on said liquid flow path side, comprising the following steps of:
• forming a first gap formation layer on an element substrate having said means for generating a bubble for the formation of a first gap formation member, and performing patterning;
• forming the fixing portion of said movable member having the same height as that of said first gap formation member in the portion on said substrate not occupied by said first gap formation member;
• forming said movable member on said first gap formation member and said fixing member;
• forming a second gap formation member for the formation of gap between the side walls of said liquid flow path and said liquid supply port on the upper surface and sides of the movable portion of said movable member;
• removing said first gap formation member, while leaving said second gap formation member intact in the state of being closely in contact with said movable member;
• forming wall material at least on said second gap formation member and circumference of said movable member;
• patterning said wall material to form said liquid flow path walls and said liquid supply ports altogether;
• and
• removing said second gap formation member.