The writing principle of the ballpoint pen is mainly to use the ball beads in the writing and direct contact with the paper to produce friction, so that the beads in the ball seat rolling, with the pen core of the ink or ink, in order to achieve the purpose of writing. A ballpoint pen is a pen written with ink with different pigments.
The nib is a small steel ball, the small steel ball embedded in a small cylindrical copper bowl, after the connection with ink plastic pipe, ink with the steel ball rotation from four weeks down. The pigment of ballpoint pen ink is dye. Ink color mainly has blue, red, black three kinds, of which especially with blue ink use the most. In the past, the pigment components in blue ink were saline-based blue and salt-based Qinglian, and solvents were oxidized castor oil and castor oil acid. Because the salt base dye is not resistant to light (the luminosity is only 1-2 grade), not heat-resistant, not acid and alkali resistance, so the durability is poor, has been eliminated.
The "424" Blue ballpoint pen and the "322" Black ballpoint pen sold on the market have a better durability of the handwriting written with it. Fragrance Ballpoint Pen Toxic reports are common, shoddy aromatic stationery contains volatile organic compounds are toxic, there is some damage to the human body; However, no incidents have been heard of poisoning due to the normal use of oily ballpoint pens with volatile organic compounds.