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US 9,223,236 B2Granted
Preparing colorant dispersions using acoustic mixing
AssigneeXerox Corporation
InventorsShigang Qiu, Santiago Faucher, Kimberly D Nosella, David R Kurceba, Yulin Wang, Karina Lopez
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Abstract
The present disclosure provides processes for making inorganic or organic colorant dispersions using an acoustic mixer, where such dispersion may be used to make toner. Such processes apply low frequency, high intensity acoustic energy and a consistent shear field throughout an entire mixing vessel and provide uniform dispersion of colorants within minutes.
Claims20
A process comprising:
- mixing one or more colorants and water, with an optional dispersant, in a vessel to form a mixture;
- subjecting the mixture to acoustic mixing at a frequency of from about 3 Hertz to about 300 Hertz;
- and
- forming a uniform aqueous colorant dispersion comprising colorant solids as particles, wherein said particles comprising said dispersion have a D50 from about 50 nm to about 500 nm.
1 more element
Dependencies are inferred from the claim text.