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Rasmus Malling-Hansen
Rasmus Malling-Hansen (5 September 1835 – 27 September 1890) was a Danish inventor, minister and principal at the Royal Institute for the Deaf, and one of the true pioneers of the 19th century. He possessed a great urge to bring forward new ideas and new inventions, and to reveal the secrets of unknown connections in nature. Nothing was too small to arouse the interest of Malling-Hansen, and in even the smallest things he saw a potentially meaningful detail. This led him to be one of Denmark's most colourful inventors, a farsighted educational reformer, and the discoverer of an unknown factor that affects all growth in nature.
==Inventor of the world's first commercially produced typewriter==
Malling-Hansen developed his invention further throughout the 1870s and '80s, and in 1874 he patented a new model in which the cylinder was replaced by a flat carriage on which the paper was fastened. In 1875 the writing ball found its well-known tall shape. With this model, Malling-Hansen found a mechanical solution for the movement of the paper, dispensing with the battery. The writing ball was sold in many countries in Europe, but probably due to the relatively high price, it was never a great commercial success. Even so, it was a great success in different exhibitions, and Malling-Hansen received the first prize medal at a large industrial exhibition in Copenhagen in 1872, and at the world exhibitions in Vienna in 1873, as well as in Paris in 1878. That year Malling-Hansen also invented a fast speed writing machine to be used for stenography, called the Takygraf. We know the patent application for this machine, and there also exist pictures of it, so at least one specimen must have been made. But nobody knows where this Takygraf is today. Malling-Hansen was also the first person to discover the unique possibilities of blue carbon paper, and developed a copying technique he called the Xerografi. It could, in a relatively short time, produce up to one hundred copies of letters and drawings.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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