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A study on the charge-control mechanism

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A charge-control mechanism of CCA (Charge Control Agent) has been proposed in the present investigation that assumes an appreciable temperature increase at the “toner/carrier” interface due to the tribo-electrification. Further assumption is that CCA be present on the surface of both toner and carrier. Because of the present local heating, the electrical resistivity of CCA is remarkably decreased to give a conductive channel, through which the carrier-flow occurs effectively to charge up the toner. These two assumptions have experimentally been verified. Especially, the local heating up to around 100 °C has been confirmed by using a pigment-marker which changes its color from black to red. Around this temperature, the electrical resistivity of CCA is also found to be significantly lowered by three orders of magnitude as deduced from the temperature dependence of the electrical resistivity.

Document Type: Research Article

Publication date: January 1, 2007

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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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