Penne a sfera classiche gel ibride roller differenze

The concept of a "ballpoint pen" is extremely diverse, designed to meet different user needs and applications. Let's look at the characteristics, differences, advantages, and disadvantages of each type of ballpoint pen. Ballpoint pens share the same basic technology: a ball at the tip draws a small portion of ink from the internal reservoir and deposits it on the writing surface, typically a sheet of paper. All of them, absolutely all of them, basically work this way. The most important difference between them concerns the ink formulation: viscous, oil-based gel hybrid liquid, water-based Happy writing, everyone!