Liquid ejection head and ink jet printing apparatus

A liquid ejection head comprising:

• a plurality of pressure chambers provided correspondingly to a plurality of ejection openings for ejecting liquid, the plurality of pressure chambers including energy generating elements for generating energy used for ejecting the liquid;
• and
• a substrate provided with a supply port array in which a plurality of supply ports, each of which is formed as a hole passing through the substrate and is configured to supply the liquid to the pressure chambers, are arrayed and an energy generating element array which is opposed to the supply port array and in which a plurality of the energy generating elements are arrayed,
• wherein wirings used for driving the energy generating elements are formed in beam portions, each of which being formed between adjacent supply ports in the supply port array.

An ink jet printing apparatus that performs printing by using a print head for ejecting ink, wherein

• the print head comprises:
• a plurality of supply ports through which the same kind of ink is supplied to pressure chambers, each of which communicates with an ejection opening and in each of which an ejection energy generating element is provided, each of the plurality of supply ports being formed as a hole passing through a substrate;
• beam portions configured to separate the plurality of supply ports from each other;
• and
• wirings provided in the beam portions, the wirings being used for driving the ejection energy generating elements.

A liquid ejection head comprising:

• a member provided with a plurality of ejection openings for ejecting liquid;
• a substrate provided with first and second element arrays, in each of which a plurality of energy generating elements for generating energy used for ejecting the liquid are arrayed in a first direction, and a supply port array in which a plurality of supply ports for supplying the liquid to the plurality of energy generating elements are arrayed in the first direction, each of the plurality of supply ports being formed as a hole passing through the substrate, wherein the first element array, the supply port array and the second element array are arrayed in this order in a second direction that intersects with the first direction;
• and
• wirings that are connected to the energy generating elements of the second element array in order to drive the energy generating elements extends toward the first element array through spaces between the supply ports of the supply port array.