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Understanding the Influence of Surface Acid and Base Properties and Water on Work Functions and Triboelectric Charging Using Inverse Gas Chromatography

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Inverse Gas Chromatography (IGC) has been applied to study surface Lewis acid and base properties of xerographic developers. Model carrier and toners were prepared and the toners blended with metal oxide surface additives: silica, titania and alumina. The effect of additives on charging, work functions and surface chemistry, as measured by IGC, was studied. All properties were evaluated as a function of relative humidity, to improve understanding of the effect of water as relative humidity increases. Results under dry and wet conditions generally support a work function model for charging, where work functions are determined by surface acid-base properties. Adsorption of water onto surfaces can be followed by IGC, work functions and charging. All provide a consistent picture that water adsorption leads to surfaces that have essentially the properties of adsorbed water at sufficiently high RH.

Document Type: Research Article

Publication date: January 1, 2006

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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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