Different inks have different storage times.

Ballpoint pen (Ballpoint Pen) is a pen that rolls out the writing medium through the ball at the front end of the pen or refill. A ballpoint pen is a pen that uses tiny rotating balls made of brass, steel, or tungsten carbide that release ink onto the paper as you write. The ballpoint pen is very different from its predecessors - reed pens, quill pens, metal nib pens and fountain pens.