What is the evolution information of pens?

BC 2000: People in China write with a brush made of mouse hair, and the ink is soot, lamp oil and gel. ?

BC 1200: The Egyptians extracted natural dyes and colors from berries, plants and minerals to make black water. This pen is a thin reed. 600 years later, the Egyptians invented papyrus. ?

AD 400: Many civilized societies invented more stable ink. It is made of iron salt, oak bile and gum Arabic. This basic formula has been used for centuries. ?

AD 700: The Romans invented quill pens, using feathers from the wings of big birds. Feather pen became the main writing tool in the later 1000. ?

1548: Juan de Iciar, a Spanish calligrapher, mentioned bronze pens for the first time in his calligraphy manual. ?

1700: Nicolas Bion (a master of musical instrument making in Louis XIV's France) first left drawings for fountain pens. He has five pens handed down from generation to generation.

Extended data

Matters needing attention in pen selection

Trap 1: Many opaque ballpoint pen cores will not be filled with enough ink according to the requirements of GB/T 4306-92 (national standard), and there is only 1-2 cm ink near the nib; Some transparent ballpoint pens are about 1 cm near the nib, while others cannot write.

Trap 2: Inferior ink cannot be used in the environmental temperature range of 0-40℃ required by the national standard, and the ink will flow when the weather is hot; It's too cold to write.

Trap 3: ballpoint pens require a shelf life of two years, and inferior ink will dry up in a few months.

Trap 4: The national standard requires the standard writing angle of ballpoint pen to be 47 degrees. Inferior nib or inferior ink can only be written vertically, and it is difficult to write or not to write when the pen holder is slightly inclined (holding the pen at an angle of about 47 degrees, counterclockwise and turning quickly is a good way to visually check the ballpoint pen).

Trap 5: Ballpoint pens and gel pens are mostly plastic. The cap of the fixed refill of inferior products is easy to slide off, and the pen buckle and pen cover are not in contact with the bayonet and are not bonded with glue. Because the tension of plastic itself is easy to fall off. The tail plug is also easy to fall off when writing hard. Almost all the production lines in these factories are piecework wages, and even if there is a quality system, it will not do the inspection of the process and the end of the process, and the quality system is ineffective.

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