first, the difference in composition.
black carbon pen, the ink in the refill is mainly composed of graphite, which is one of the most stable substances in nature. Black gel pen is also called gel pen, roller pen, ball pen or ball pen. It is an upgrade of ballpoint pen. Black gel pen contains an organic solvent, which is lower in viscosity than oily ink and thicker than water-based ink, so it is called black gel pen.
second, the differences in writing.
Black neutral ink is different from ordinary ink in that it is not only fluent, but also has certain lubricity. Lubricant is added to reduce the friction between the ball and the seat, so as to minimize the loss of kinetic energy and get a more comfortable writing feel. But the writing smoothness of black carbon pen is not as good as that of black gel pen.
third, the difference of written materials.
There are many kinds of black gel pens in the market, which are divided by pen tip, including stainless steel, nickel-white copper, lead brass, etc. According to the different materials of the balls, they can be divided into tungsten carbide balls and modified ceramic balls. According to the different structure of the pen head, it can be bullet, gourd head, needle tube and so on. The tip of black carbon pen is divided into cannonball type and needle tube type, which are made of copper alloy, stainless steel or engineering plastic respectively. Most of the balls are made of stainless steel, cemented carbide or alumina.
Baidu Encyclopedia-Gel Pen
Baidu Encyclopedia-Carbon Pen