CHEMICALLY PREPARED CORE SHELL MAGENTA TONER USING A BORAX COUPLING AGENT AND METHOD TO MAKE THE SAME
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United States of America Patent
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Oct 6, 2020
Grant Date -
Oct 8, 2020
app pub date -
Apr 8, 2019
filing date -
Apr 8, 2019
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Abstract
A method for producing a chemically prepared magenta toner composition according to one example embodiment includes combining and agglomerating a first polymer emulsion with a magenta colorant dispersion containing a single azo magenta pigment and a release agent dispersion to form toner cores. A borax coupling agent is added to the toner cores. A second polymer emulsion is combined and agglomerated with the toner cores having the borax coupling agent to form toner shells around the toner cores. The aggregated toner cores and toner shells are fused to form magenta toner particles. The single azo magenta pigment in the magenta pigment dispersion does not aggregate into clusters on the outer surface of the surface core.
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