Liquid cartridge provided with deformable member and movable member for detection of remaining amount of liquid

A liquid cartridge comprising:

• a casing including a liquid chamber configured to store liquid therein, the liquid chamber being configured such that an internal pressure of the liquid chamber is reduced in accordance with outflow of liquid from the liquid chamber, the casing including a front surface and an upper surface defined based on an attached posture of the liquid cartridge;
• a liquid supply portion disposed at the front surface and configured to allow liquid in the liquid chamber to flow out of the liquid chamber;
• a deformable member protruding further upward relative to the upper surface of the casing, the deformable member having an internal space in communication with the liquid chamber, the deformable member being configured to be elastically deformable such that a volume of the internal space is reduced in accordance with the reduction in the internal pressure of the liquid chamber;
• a movable member including a detection portion configured to move in an upward direction and a downward direction in accordance with the elastic deformation of the deformable member;
• and
• a support member supporting the movable member.