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Analysis of Tribo-charging Characteristics on Toner Particles in Two-Component Developer

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Tribo-charging characteristics on toner in a two-component developer are affected by various factors such as material component, shape, and methods of tribo-charging or measuring. It is, therefore, important to evaluate tribo-charging behavior in details under certain conditions. Tribo-charging on toner is performed by using a mixing shaker with arm length of 200mm. Rotation speed corresponding with shaking frequency is 150rpm and 180rpm. Charge quantity is measured by the E-SPART method. As toner sample, a negative yellow type of toner based on bisphenol A and polyester resin is used. From the experimental results, it is showed that the q/m dependence on shaking time is saturated at near 5min with a negative value of −20 μC/g. After 5min, the q/m decreases slightly to a constant value of −15 μC/g. Charge quantity on toner shows approximately a parabolic dependence on toner diameter in the region up to 10μm in the twocomponent developer. The charge quantity q on toner is shown to be limited by the upper value deduced from the discharge condition in air and the q at 10μm was about 6fC less than 8.35fC.
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Document Type: Research Article

Publication date: 2005-01-01

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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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