Surface particle attachment process, and particles made therefrom
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United States of America Patent
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Oct 2, 2007
Grant Date -
Jul 20, 2006
app pub date -
Jan 19, 2005
filing date -
Jan 19, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method of forming toner particles having surface particles attached thereto includes the steps of aggregating a material of at least one binder material and at least one colorant to produce toner particles, following aggregation, forming a mixture of the surface particles and the toner particles, and subjecting the mixture to a temperature above the glass transition temperature of the toner particles to coalesce the toner particles, whereby the surface particles become at least partially embedded within the surface of the toner particles. Toner particles prepared by such method include a core comprised of at least one binder and at least one colorant, and surface particles at an external surface of the toner particles, wherein at least about 50% of the surface particles are substantially completely covered by a portion of binder and a majority of the surface particles protrude from the toner particle surface a distance of at least 50% of the average particle size of the surface particles.
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