Analysis of Tribo-charging Characteristics on Toner Particles in Two-Component Developer
Abstract: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.
Document Type: Research Article
Publication date: 2005-01-01
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.
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