Liquid cartridge

A liquid cartridge configured to be inserted into a liquid consuming apparatus in a first direction along a horizontal direction against an urging force directed in a second direction opposite the first direction, and thereby to be mounted to the liquid consuming apparatus, comprising:

• a liquid chamber configured to store liquid therein;
• a front face facing the first direction when the liquid cartridge is inserted into the liquid consuming apparatus;
• a liquid supply portion positioned at the front face and configured to allow insertion of a liquid supply tube of the liquid consuming apparatus thereinto;
• a seal member positioned at the liquid supply portion and having a liquid supply opening formed therethrough, the liquid supply opening defining a pivot center extending through a center of the liquid supply opening, wherein the seal member is configured to contact an outer surface of the liquid supply tube while being elastically deformed when the liquid supply tube is inserted through the liquid supply opening;
• an upper face facing an upward direction when the liquid cartridge is inserted into the liquid consuming apparatus;
• a lock surface positioned at the upper face and configured to contact a lock portion of the liquid consuming apparatus in the second direction;
• and
• a rear face facing the second direction when the liquid cartridge is inserted into the liquid consuming apparatus,
• wherein the liquid cartridge is configured to pivot about the pivot center when the liquid cartridge is inserted into the liquid consuming apparatus and the liquid supply tube is inserted through the liquid supply opening and contacts an inner surface of the seal member, wherein the liquid cartridge is configured to pivot between a first attitude and a second attitude, wherein when the liquid cartridge is in the first attitude, the lock surface contacts the lock portion in the second direction and movement of the liquid cartridge relative to the liquid consuming apparatus in the second direction is restricted, and wherein when the liquid cartridge is in the second attitude, the lock surface is positioned further in a downward direction than the lock portion, and the rear face comprises a first portion and a second portion positioned further in the upward direction than the first portion, wherein the first portion comprises a third portion positioned further in the downward direction than the pivot center, and the first portion is positioned further in the first direction than the second portion,
• wherein the following condition is satisfied:
• FH>GL,
• wherein G is a magnitude of a gravitational force acting on the liquid cartridge, F is a magnitude of the urging force urging the liquid cartridge in the second direction when the liquid cartridge is in the first attitude, L is a distance between the center of gravity of the liquid cartridge and the pivot center along the first direction when the liquid cartridge is in the second attitude, and H is a height of a lower end of the second portion from the pivot center along the upward direction perpendicular to the first direction when the liquid cartridge is in the second attitude.