Gel writing pens are one of the most popular pens.
The ink of Gel pen is high viscosity before writing, but when start writing
the viscosity decreases and it become more liquid and absorb in the paper surface.
When it absorb to the paper, the viscosity returns to original.
The time lag of ink absorbtion to the paper and return to original viscosity is the key factor of the write out drying time.
OHTO Gel Ink Roller Pen, ink absorbtion to the paper is faster than return of viscosity.
So it gives ultra-fast drying after writeout.
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