Ballpoint pens

Trouble in use :Why does the writing line become multiple

The gap between the ball and the holder of the nib is created uniformly. When the holder is deformed by dropping or beating, and only a part narrows, ink does not get on the surface of the ball and is not written. For this, the line may become double, the tint may appear, and it is likely to be fade depending on the direction of writing. It can also cause dust to be stuck on paper. Because the nib is made precisely, please handle it carefully.

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