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Quink was heavily advertised, and an immediate success. According to Kenneth Parker's personal journal, Quink production began on March 17, 1931, and $89,000 worth had been shipped by October 22—more than twice the company's expectations and an excellent return on the $68,000 spent on its development. [2]
The ideal fountain pen ink is free-flowing, free of sediment, and non-corrosive. These qualities may be compromised in the interests of permanence, manufacturability and in order to use some widely available dyes. [4] A form of ink that predates fountain pens by centuries is iron gall ink. This blue-black ink is made from iron salts and tannic ...
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Therefore, dot gain is now measured as the original digital dot versus the actual measured ink dot on paper. Mathematically, dot gain is defined as: = where a print is the ink area fraction of the print, and a form is the prepress area fraction to be inked. The latter may be the fraction of opaque material on a film positive (or transparent ...
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The pen and the ink were both named "51" to mark 1939, the company's 51st anniversary, during which development for the pen was completed (U.S. design patent No. 116,097, U.S. patent 2,223,541 filed). By giving the pen a number instead of a name, Parker avoided the problem of translating a name into other languages.
Microsoft is expected to report its slowest quarterly revenue growth in a year on Wednesday, while investors await signs of AI demand amid growing worries about the slow payoff from hefty ...
In 1894, Parker received a patent on his "Lucky Curve" fountain pen feed, [4] which was claimed to draw excess ink back into the pen barrel when the pen was not in use. The company's first successful pen, released in 1899, was the Parker Jointless. The Lucky Curve feed was used in various forms until 1928.