Role of Charge Injection in Electrophotographic Performance of Rollers and Belts

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The performance of rollers and belts used in roller-charging, development and transfer sub-processes of electrophotography is known to depend critically on the dielectric relaxation of the semiinsulating layer on the devices. The dielectric relaxation in turn requires efficient charge injection from the biased substrate. Taking into consideration the non-Ohmic nature of the electrical contacts, and the space-charge effects in the transport of injected charges, the impacts of charge injection on dielectric relaxation, and hence, on the device performance are analyzed theoretically. The results of analyses are confirmed by comparing with experimental current and voltage measurements in a characterization technique known as Electrostatic Charge Decay (ECD) method, on samples in use commercially.

Document Type: Research Article

Publication date: January 1, 2009

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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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