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Electrophoresis of Polymer Particles Charged by Acid - Base Dissociation in Silicone Oil

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A charge generation of particles due to an acid-base dissociation in non-polar solvent is essential for liquid toners used in electrophotography. In this paper, a charge generation and a dispersion stability of acrylic polymer particles including base groups by an interaction with acid / base dispersing polymers modified with silicone groups in silicone oil are discussed. The dynamic mobility and the dispersion stability of the particles are measured by electrokinetic sonic amplitude methods (ESA) and visually observed by a high-speed video camera. From these observations, it is suggested that the charge generation at the surface of particles is affected by the acid-base dissociation in the silicone oil. As evidence, the mobility of the particles increases responding to an increase in acid polymer concentration solved in silicone oil. In conclusion, a suitable concentration of the acid / base dispersing polymer which makes the particle higher mobility is presented.

Document Type: Research Article

Publication date: January 1, 2003

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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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