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Time Discrimination of Coulter Recount Artifact

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The toning process has a strong size selectivity leading to filming of the carrier which can result in image fogging or high process control set points. Preparation of toners with minimal fines is needed to minimize these deleterious effects. The Coulter Counter technique has been the standard for characterizing toners because its ability to discriminate fines levels. It has been shown by using an internally purged aperture tube [1] that recounting of particles inside the aperture tube gives erroneously high fines measurements. The duration of the counting event is longer for particles inside the tube passing the aperture close enough to be recounted than it is for particles passing through the aperture. One can discriminate the recount artifacts from real counts using the pulse duration data available from measurements made the Multisizer 3.
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Document Type: Research Article

Publication date: 01 January 2006

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

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