Liquid ejection head and liquid ejection apparatus

A liquid ejection apparatus comprising:

• a liquid ejection head configured to eject a liquid onto a recording medium;
• and
• a conveying unit configured to convey the recording medium in a conveyance direction,
• wherein the liquid ejection head includes an element substrate including:
• a first ejection port array in which a plurality of ejection ports configured to eject the liquid is arranged in a first direction;
• a second ejection port array that is disposed, with respect to the first ejection port array, in a second direction intersecting the first direction and in which a plurality of the ejection ports configured to eject the liquid is arranged in the first direction;
• a plurality of pressure chambers each provided to a corresponding ejection port of the plurality of ejection ports and each including an energy generating element configured to generate thermal energy for discharging the liquid from the corresponding ejection port;
• a first supply passage configured to supply the liquid to the plurality of pressure chambers of the first ejection port array;
• a second supply passage configured to supply the liquid to the plurality of pressure chambers of the second ejection port array;
• a first liquid supply opening configured to supply the liquid to the first supply passage;
• and
• a second liquid supply opening configured to supply the liquid to the second supply passage,
• wherein an opening area of the first liquid supply opening is equal to or smaller than an opening area of the second liquid supply opening.