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There were two iterations of a special ink formulated exclusively for use in the Parker 51. This initial ink was highly alkaline and while water-based, also included a substantial amount of isopropyl alcohol. It was released in 1941 as "51" ink, along with the Parker 51 pen. Parker was careful to print prominent warnings on caps, labels, and ...
Several models of the Parker 51, regarded as the most widely used model of fountain pen. From the 1920s to the 1960s, before the development of the ballpoint pen, Parker was either number one or number two in worldwide writing instrument sales. In 1931, Parker created Quink (quick drying ink), which eliminated the need for blotting. [6]
Parker was careful to print prominent warnings on caps, labels, and boxes that the ink could only be used in the 51 (and, later, its economy version, the 21), and would damage any other pen. Prior to the full public introduction of the Parker 51 in 1941, selected market testing of the new pen was carried out, starting in 1939.
In 1957, the company launched the T-Ball refill, which contained reformulated ink and a textured tungsten carbide writing ball. One year later, the company added an arrow to replace the ball-clip design. The arrow has remained on all production Jotters since. Parker Jotter featuring discontinued brass inner cap threads in front of a Sheaffer ...
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Francisco Quisumbing. Francisco Arguelles Quisumbing is said to be a Filipino botanist claimed to be the inventor of Quink ink [1] [2] used by The Parker Pen Company. He studied in the Philippines and the US, gaining a BSc from the University of the Philippines School of Agriculture, [disputed – discuss] Los Baños in 1918 and an MSc in 1921.
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