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The earliest historical record of a pen with a reservoir dates back to the 10th century AD. In 953, Ma'Äd al-Mu'izz, the Fatimid Caliph of Egypt, demanded a pen which would not stain his hands or clothes, and was provided with a pen which held ink in a reservoir and delivered it to the nib. This pen may have been a fountain pen, but its mechanism remains unknown, and only one record mentioning it has been found. A later reservoir pen was developed in 1636. In his Deliciae Physico-Mathematicae (1636), German inventor Daniel Schwenter described a pen made from two quills. One quill served as a reservoir for ink inside the other quill. The ink was sealed inside the quill with cork. Ink was squeezed through a small hole to the writing point. In 1809, Bartholomew Folsch received a patent in England for a pen with an ink reservoir. While a student in Paris, Romanian Petrache Poenaru invented the fountain pen, which the French Government patented in May 1827. Fountain pen patents and production then increased in the 1850s. The first patent on a ballpoint pen was issued on October 30, 1888, to John J Loud. In 1938, László Bíró, a Hungarian newspaper editor, with the help of his brother George, a chemist, began to design new types of pens, including one with a tiny ball in its tip that was free to turn in a socket. As the pen moved along the paper, the ball rotated, picking up ink from the ink cartridge and leaving it on the paper. Bíró filed a British patent on June 15, 1938. In 1940 the Bíró brothers and a friend, Juan Jorge Meyne, moved to Argentina fleeing Nazi Germany. On June 10 they filed another patent, and formed "Bíró Pens of Argentina". By the summer of 1943 the first commercial models were available. Erasable ballpoint pens were introduced by Papermate in 1979 when the Erasermate was put on the market. 1915 advertisement for "Vulcan" Ink Pencils Slavoljub Eduard Penkala, a naturalized Croatian engineer and inventor of Polish-Dutch origin from the Kingdom of Croatia-Slavonia in Austria-Hungary, became renowned for further development of the mechanical pencil (1906) – then called an "automatic pencil" – and the first solid-ink fountain pen (1907). Collaborating with an entrepreneur by the name of Edmund Moster, he started the Penkala-Moster Company and built a pen-and-pencil factory that was one of the biggest in the world at the time. This company, now called TOZ-Penkala, still exists today. "TOZ" stands for "Tvornica olovaka Zagreb", meaning "Zagreb Pencil Factory". Modern marker pens In the 1960s, the fiber or felt-tipped pen was invented by Yukio Horie of the Tokyo Stationery Company, Japan. Paper Mate's Flair was among the first felt-tip pens to hit the U.S. market in the 1960s, and it has been the leader ever since. Marker pens and highlighters, both similar to felt pens, have become popular in recent times. Rollerball pens were introduced in the early 1970s. They use a mobile ball and liquid ink to produce a smoother line. Technological advances during the late 1980s and early 1990s have improved the roller ball's overall performance. A porous point pen contains a point made of some porous material such as felt or ceramic. A high quality drafting pen will usually have a ceramic tip, since this wears well and does not broaden when pressure is applied while
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