Composition and method of making an aqueous magnetic ink character recognition inkjet ink
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United States of America Patent
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Jan 3, 2017
Grant Date -
Nov 26, 2015
app pub date -
Mar 18, 2015
filing date -
May 20, 2014
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Abstract
An aqueous MICR inkjet ink includes between 20% to 60% by weight of a magnetic iron oxide with cobalt doping, pigment dispersion, mixed with between 5% to 30% by weight of a humectant, in a water solution emulsion. The dispersion is milled in a wet media mill to obtain particle size in the 150 nm range. Additional humectant, surfactants, jetting agents, and stabilizing additives are added for the final ink composition.
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