Liquid storage container

An ink bottle for replenishing an ink tank of an inkjet printing apparatus with ink, the ink bottle comprising:

• a storage portion that contains ink;
• a discharge port portion connected to the storage portion and including a discharge port through which ink stored in the storage portion can be discharged and a coupling portion in which a male thread portion is arranged on the outside;
• and
• a cover portion including a female thread portion on the inside and configured to be attachable to and detachable from the discharge port portion, the female thread portion configured to be screwed to the male thread portion,
• wherein the male thread portion is discontinuous in the coupling portion and the discontinuous male thread portion forms one helical shape as a whole,
• the discharge port portion, viewed from an ink discharge direction, has:
• a plurality of arc portions including first to fourth arc portions that are along a circle having a diameter of a portion of the coupling portion excluding a projecting portion of the male thread portion and including the male thread portion,
• a plane portion including a first plane portion and a second plane portion formed on an inner radial side of the circle and provided rotationally symmetrically by one hundred eighty degrees with respect to a center of the circle, and
• a plurality of recess portions including a first recess portion and a second recess portion formed on the inner radial side of the circle,
• wherein the first arc portion, the first plane portion, and the second arc portion are continuously provided in this order,
• the third arc portion, the second plane portion, and the fourth arc portion are continuously provided in this order,
• the first recess portion is provided between the first arc portion and the third arc portion, and
• the second recess portion is provided between the second arc portion and the fourth arc portion.