Historia długopisów

Długopisy, narzędzia do pisania mają swój początek w okolicach roku 1938. Węgier Laszla Biro, artysta i dziennikarz i jego brat Georg – chemik , stworzyli pierwszy długopis, a Francuski baron Marcel dorobił się potężnego majątku na ich pomyśle. Produkcja masowa była jako pierwsza wykorzystywana przez alianckich pilotów w czasach Drugiej wojny światowej. Można było nimi pisać bez względu na ciśnienie atmosferyczne. Do wynalezienia i produkcji długopisów zaangażowane były: przemysł wydobywczy, naftowy, chemiczny a także metalowy. Wykorzystuje się do takiej produkcji surowce z niemal całej ziemi. Najpopularniejsze długopisy dostępne na rynku jakie teraz wygrywają konkurencję z innymi to długopisy Parker, a przede wszystkim ich wyrafinowana kolekcja Parker Sonnet. Długopisy świetnie się sprawują się w każdych warunkach. Wkłady są wyjątkowo proste w wymianie i bardzo długo można się nimi cieszyć zapisując mnóstwo kartek, podpisując mnóstwo umów. Elementy długopisu to obudowa oraz rurka wypełniona tuszem, zakończona obsadką. W takiej obsadce jest kulka o średnicy mniej więcej 1mm. Gdy piszemy i długopis dotyka papieru, kulka obracając się równomiernie rozprowadza tusz. Dzięku temu, że kulka osadzona jest w gnieździe, może się ona obracać ale nie ma mowy o jej wypadnięciu. Między kulką a gniazdem jest przestrzeń dla wypływania tuszu. Szczelina jest na tyle niewielka, że gdy nie używamy długopisu, tusz nie ma prawa się z niego wylewać bez naszej kontroli.

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