Ink cartridges

An ink cartridge, comprising:

• an ink chamber;
• a translucent portion configured to be in fluid communication with the ink chamber, wherein the translucent portion has an inner space formed therein, and the translucent portion comprises a first wall, a second wall opposite the first wall, and a third wall connected to each of the first wall and the second wall;
• a signal blocking member disposed within the inner space of the translucent portion between the first wall and the second wall;
• and
• a translucent portion rib disposed within the inner space of the translucent portion between the first wall and the second wall, wherein the translucent portion rib extends a from the third wall, a first distance between the translucent portion rib and the first wall is less than a second distance between the signal blocking member and the first wall, and the signal blocking member is configured to move within the inner space of the translucent portion between a first position and a second position based on an amount of ink within the ink chamber, wherein when the signal blocking member is in the first position the signal blocking member is in contact with the translucent portion rib, and when the signal blocking member is in the second position the signal blocking member is separated from the translucent portion rib.