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Treated Metal Oxide Additives for Toner Tribocharge Control

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The tribo-charge performance of treated silicas made from a selection of different aqueous colloidal silicas and treated with several different silanes is shown to be principally a function of the logarithm of the water partial pressure during development. However, no correlation between the tribo-charge behavior and the silica surface water concentration was found. Surface treatment with silanes containing certain ionizable functional groups can have a dramatic impact on tribo-charge behavior that differs significantly from treatment with only simple alkane-type silanes. A series of SEM micrographs is also presented, which show that the treated colloidal silicas fully retain their original size and shape and that the silica particles have excellent dispersibility and adhesion to the toner particle.

Document Type: Research Article

Publication date: January 1, 2008

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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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