The ink in the carbon refill is mainly composed of graphite, which is one of the most stable substances in nature.

Ink pen is a hard pen for writing small characters or calligraphy and painting. Also refers to the brush and fountain pen for watercolor painting (pen with ink storage device in the pen holder).

Signature pens refer to pens specially used for signing or signing samples, including water-based signature pens and oily signature pens. Pen used to be used, but now it is gradually replaced by gel pen. Therefore, all such pens are collectively referred to as: signature pens.

Gel pen, short for neutral ink ballpoint pen, originated in Japan and is a novel writing tool popular in the world.

2. Different characteristics

Carbon pen handwriting is stored for a long time, and the font will not become blurred because of the long storage time.

The nib is generally made of two kinds of hair: wool or rabbit hair inside to keep water; Wrapped in wolf hair, the pen is strong.

Water-based pen is usually used on paper, and it is easy to erase when used on whiteboard or sample. Oily pens are generally used for sample signatures or other permanent marks. Oily pens are difficult to wipe, but they can be cleaned with alcohol.

Gel pen has the advantages of fountain pen and oily ballpoint pen. Writing feels comfortable, ink viscosity is low, and added substances are easy to lubricate. The viscosity of writing medium is between water-based and oily, so it is smoother than ordinary oily ballpoint pen, and it is an upgraded product of oily ballpoint pen.

Extended data:

1. Signature pens with ballpoint pen structure can be divided into water-based and oil-based according to the different ink components used. The ink used for neutral signature pen is between water-based and oil-based, also called "neutral pen".

2. A signature pen with a fiber tip is soft and comfortable to use, and will be recognized more and more. It is constructed like a ballpoint pen and feels like a pen when writing.

Signature pens can also be divided into broad sense and narrow sense. Broadly speaking, pens used for signature are all called signature pens. For example, Parker's signature pen and Montblanc's signature pen, which are often used now, are all pens that we have been using since childhood. In a narrow sense, it refers to carbon ink pen or above, while the exam uses a narrow signature pen, that is, carbon ink pen.

Special gel pen for archives

The ink used is pigment, which is resistant to water and sunlight and does not fade. For example, the signatures of account books and important documents require clear handwriting and are not easy to fade. Now many companies have introduced "special pens for exams". In fact, it also belongs to the category of "gel pen for documents", and pigment ink must be used.

But because of the high cost of pigment ink, most manufacturers will use dye ink instead! Therefore, when buying this special gel pen, you must choose the products of big brands, and pay attention to whether there is a professional logo of "pigment ink" on its products.

The ink used is dye-based, water-resistant and easy to fade.

Insert gel pen

Plug-in gel pens have caps. The cap can be changed into various shapes to make the whole pen look more beautiful; More importantly, it can protect writing.

Press gel pen

The push gel pen is completely different from the plug gel pen. The push-type gel pen passes through the continuous accessories at the end of the pen. After being pressed, the parts face down, and it is buckled in the protruding position of the pen body, and the nib protrudes. The pen tip is provided with a spring to assist the loading, which is more convenient and quick in the use process and can effectively prevent the pen tip from being poked.

Baidu encyclopedia-carbon pen

Baidu encyclopedia-fountain pen

Baidu encyclopedia-signature pen

Baidu encyclopedia-gel pen