PREPARING DRY TONER PARTICLES FOR METALLIC EFFECT
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United States of America Patent
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Issued Date -
Nov 7, 2013
app pub date -
May 2, 2012
filing date -
May 2, 2012
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Abstract
Metallic dry toner particles are prepared by dry blending resin particles with non-conductive metal oxide particles to form a dry blend. This dry blend is melt extruded under low shear conditions to form an extruded composition that is broken up into metallic dry toner particles. Each metallic dry toner particle consists essentially of a polymeric binder phase formed from the resin particles, and the non-conductive metal oxide particles dispersed within the polymeric binder phase. The metallic dry toner particles have a mean volume weighted diameter (Dvol) before fixing of 15 μm to 40 μm, and the non-conductive metal oxide particles are present in an amount of 20 to 50 weight %. The ratio of the metallic dry toner particle Dvolto the average equivalent circular diameter (ECD) of the non-conductive metal oxide particles in the metallic dry toner particles is greater than 0.1 and to 10.
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