Liquid discharging head, method for manufacturing such liquid discharging head, head cartridge and liquid discharging apparatus

A liquid discharging head comprising:

• an element substrate having a plurality of heat generating elements for generating a bubble in liquid;
• a grooved member having an opening portion into which said element substrate can be inserted and a plurality of grooves for constituting a plurality of liquid passages when said element substrate is inserted in said opening portion;
• and
• a separation wall for dividing said liquid passages into first liquid passages communicated with discharge openings and second liquid passages within which the respective heat generating elements are disposed, said separation wall having movable members each capable of being displaced toward said first liquid passage by pressure of a generated bubble;
• and wherein
• the pressure is directed toward the corresponding discharge opening by said movable member thereby to discharge the liquid.

A liquid discharging head comprising:

• a plurality of substrates each having a plurality of heat generating elements for generating a bubble in liquid;
• and
• a grooved member having a plurality of opening portions into which the respective substrates are inserted and a plurality of grooves constituting a plurality of liquid passages for each of said opening portions;
• and wherein
• by inserting said plurality of substrates into the respective opening portions, respectively, said substrates are joined to said grooved member and said liquid passages for said respective heat generating elements are formed.