Brief Introduction of Ball Pen
Ball pen is a writing tool which uses dry and thick ink and transfers it to paper by means of free-rotating steel balls on the pen head. It has the advantages of simple structure, convenient carrying, writing lubrication and suitable for copying.
Ball pen is a pen that uses tiny rotating balls made of brass, steel or tungsten carbide to release ink into paper when writing. Ball pens differ greatly from their predecessors, reed pens, feather pens, metal-tipped pens and fountain pens.
Structural Principle of Ball Pen
The writing principle of ballpoint pen is mainly to make use of the friction force produced by the ball contact with the paper surface directly when writing, so that the ball can roll in the ball seat and bring out the ink or ink in the pen core, so as to achieve the purpose of writing.
Ball pen is a pen written with ink and different pigments. The tip of the pen is a small steel ball. The small steel ball is embedded in a small cylindrical copper bowl, and then connected to a plastic pipe with ink. The ink flows down from all sides as the steel ball rotates.
The pigment of ballpoint pen ink is dye. Ink colors are mainly blue, red and black, of which blue ink is the most widely used. In the past, the pigments in blue ink were salt-based pink blue and salt-based blue lotus, and the solvents were oxidation of castor oil and castor oleic acid. Because the salt-based dyes are not light-resistant (light resistance is only grade 1-2), heat-resistant, acid-alkali-resistant, so the durability is poor, has been eliminated. The “424” blue ballpoint pen and “322” black ballpoint pen sold on the market have good durability for handwriting.
Use common sense
- The pen is stronger and more durable than ordinary pens, but if improper use and storage, it often fails to write. This is mainly due to the sticking of dry ink around the beads to prevent ink from flowing out. Ink is a kind of viscous oil, which is made of flaxseed oil, synthetic pine oil (mainly containing terpene alcohols), mineral oil (oil obtained from fractionating petroleum and other minerals), hard gum and fume.
- When using ballpoint pens, do not write on paper with oil and wax, or oil and wax embedded in the copper bowl along the edge of the ball will affect the ink and can not write, but also avoid the impact of the pen, exposure, when not in use with gloves good pen cap, in order to prevent damage to the pen head, pen pole variant and the leak of oil and contaminants. If it is cold or unused for a long time. When the pen is not greasy, it can be dipped in warm water for a moment and then scratched on the paper to write.
- Ballpoint pen has a big disadvantage: its handwriting is very clear at first, but it can’t stand the test of time. After a long time, the handwriting will gradually blur. This is because the ballpoint pen ink is made of dyes and castor oil. Oil is different from water. It is not easy to dry. Over time, oil will slowly soak in the paper and the handwriting will become blurred. Therefore, ballpoint pen can only be used as a common writing pen. If you want to keep handwriting for a long time, you need to use a pen.
- If the ball-point pen touches the ground at 90 degrees, the ball-point pen will not be damaged, but if it is damaged at the receptacle, there will be “oil” phenomenon in the gap. In serious cases, the ball-point will fall off and there will be writing difficulties.
Classification of Ball Pens
Water-based ballpoint pen is also called jewelry pen or walking pen.
The pen holder and pen cover of jewelry pen are plastic injection moulded, the pen cover is made of stainless steel stamping and grinding, and the pen holder and pen cover are made of stainless steel, which is called all-steel jewelry pen. Full plastic moulding is basically a one-time use, that is, the ink is used up and scrapped; semi-steel and all-steel moulds mostly adopt replaceable pen-core structure. The head of the jewelry pen can be divided into two types: shell type and needle-tube type, which are made of copper alloy, stainless steel or engineering plastics respectively. Balls are mostly made of stainless steel, cemented carbide or alumina, with a diameter of 0.7 mm and a diameter of 0.5 mm. There are two types of water storage: fiber bundle water storage and non-fiber bundle water storage. The colours of the ink are red, blue, black and green. Jewelry pen has the characteristics of both pen and oil ballpoint pen. It has smooth writing lubrication and even lines. It is an ideal writing tool.
The balls of oil ball pens are mostly made of stainless steel or cemented carbide.
The size of ball diameter determines the size of handwriting lines. Common ball diameters are 1 mm, 0.7 mm and 0.5 mm (the body or core of the product is often marked). The ink of ballpoint pen is specially made, which is mainly composed of colors, solvents and tackifiers. Common colors are blue, black and red. Common ink is mostly used for general writing, and special ink is mostly used for file writing. Ink for file writing is usually marked on the core, such as DA on the domestic core.
Oily ballpoint pen is the first product of ballpoint pen series. It has been more than 60 years since it was put on the market in batches. After long-term improvement and improvement, the production technology of oil ballpoint pen is mature, the product has stable performance, long shelf life and stable writing performance. It has become a traditional product of ballpoint pen products. The ink viscosity of oil ballpoint pen is high, so the writing feel is relatively heavy.