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Demand for a Sign Pen was so extraordinary that the Tokyo factories could not supply all requests. [8] The Sign Pen was one of Pentel's most successful products with more than two billion units sold. [2] In 1971 the company changed its name to "Pentel Co. Ltd." and one year later, the green rollerball pen with water-based ink, was launched. [2]
Gel pens. Compared to other inks, gel ink has higher melting point viscosity, which supports a higher proportion of pigments in the medium.The pigments are typically copper phthalocyanine, carbon black and iron oxides, and the gel is made up of water and biopolymers, such as xanthan gum and tragacanth gum, as well as some types of polyacrylate thickeners.
The "liquid-ink" type uses an ink and ink-supply system similar to a fountain pen, and they are designed to combine the convenience of a ballpoint pen with the smooth "wet ink" effect of a fountain pen. The "liquid-ink" type rollerball pens were introduced in 1963 by the Japanese company Ohto. [2] [3] The gel-ink type rollerball pens were ...
A pen is a handheld device used to apply ink to a surface, usually paper, for writing or drawing. [1] Additional types of specialized pens are used in specific types of applications and environments such as in artwork, electronics, digital scanning and spaceflight, and computing.
The tip of a green felt-tip pen A box of colored felt-tip pens Marker pen. A marker pen, fine liner, marking pen, felt-tip pen, felt pen, flow marker, sign pen (in South Korea), vivid (in New Zealand), flomaster (in East and South Slavic countries), texta (in Australia), sketch pen (in South Asia), koki (in South Africa) or simply marker is a pen which has its own ink source and a tip made of ...
The 401 has the same stainless steel shaft with a rubber grip. Finally, the flagship pen, the 701 has a knurled grip and is completely stainless steel. A cross section of these barrel styles reflect different ink types. For example, the 3-series barrel is available in ballpoint, gel, mechanical pencil, fountain pen, highlighter, and rollerball pen.
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