White dry ink pulverized toner composition and formulation thereof

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United States of America Patent

PATENT NO 9964883
SERIAL NO

15170929

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Importance

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Abstract

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An apparatus and method of manufacturing a white dry ink pulverized toner including a resin and 15%-45% TiO2 pigment having a mean size of 100-350 nm melt mixed with the resin in a twin screw extruder resulting in an extruded mix. The extruded mix is pulverized in a fluid bed jet mill. Fines of the pulverized extruded mix less than 5 microns may be removed from the pulverized extruded mix by classification leaving pulverized particles having a mean size of 6-12 microns. The pulverized particles are blended in a mixer with surface additives including silica and ZnSt, and the white dry ink pulverized toner has a developer charge between 5 and 50 μC/gram and a Lightness (L*) of at least 75 at a toner mass per unit area (TMA) of at most 1.2 mg/cm2.

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Patent Owner(s)

  • XEROX CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Morales-Tirado, Juan A Henrietta, US 39 155
Sambhy, Varun Pittsford, US 90 419
Stamp, Kirk L Rochester, US 3 1

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