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The First Measurement of Cohesive Force Distributions in Powder Flow: New Insights into the Effect of Metal Oxide Surface Additives on Xerographic Toner

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The Hosokawa powder tester has been used for years to determine cohesion of bulk powders, including toner. For the first time a method is demonstrated to measure cohesive force distributions, rather than just average values, using the Hosokawa tester. The method is demonstrated for toner, varying surface additive composition and loading. Force distributions are shown to be generally log-normal. Both the mean and width of the distributions generally decrease with increased surface additive loading. Thus, better flow with additives decreases peak cohesion and distribution width.

Document Type: Research Article

Publication date: 2002-01-01

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  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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