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A Novel High Field Electrophoretic Cell for Characterisation of Concentrated Liquid Toners

Alexander B. Ozerov and Charlie M. Mao
Research Laboratories of Australia (Australia)

Abstract

It is well known that the electrical properties of liquid toners used in electrophotography significantly influence the quality of printed images. Electrophoresis, being the main driving force in liquid immersion development processes (LID), has been extensively studied by researchers elsewhere. The most important electrical characteristics of conventional liquid toners used in LID are conductivity, electrophoretic mobility and charge to mass ratio. Although the physical origins of these parameters in liquid toners are well understood, methods and commercial equipment available for measuring these properties are limited. The majority of methods that have been developed, suit toners of low viscosity and low solid content. In the past decade, there has been increasing attention to new liquid toners with higher solid content and increased viscosity. These toners are opaque and therefore, the traditional optical methods for measuring particle transient time in low concentration dispersions are unsuitable for these highly concentrated liquid toners. This paper will introduce a new method of measuring the electrical properties of liquid toners and will discuss its potential application in liquid electrophotography.

About the Authors

Alex Ozerov manages the HVT Technology Division at The Research Laboratories of Australia, Adelaide, Australia. He has been involved in the development of digital printing systems for the past nine years. Alex Ozerov received his Master’s degree in Physics from Nizhny Novgorod University, Russia, in 1983. Between 1983 and 1993 he worked as a key research scientist and technologist in the area of microelectronics and semiconductor materials. He joined Research Laboratories of Australia in 1994 and has been working there as a principal technologist in the area of novel liquid electrophotographic processes. His career in science and engineering fields has been marked with over twenty publications and several patents.

Charlie Mao joined Research Laboratories of Australia as a research physicist in 1996. Since then, he has been working in the field of advanced and novel imaging technologies on developing mathematical modeling techniques and through his participation in client project activities. His main interests are in the areas of theoretical research and experimental development, and modelling and implementation of color image reproduction evaluation. He worked as a university lecturer in the area of mining and a research scientist in soil science before 1996. He received his B. Eng and M. Eng from PRC in China in early 1980s and his PhD in Applied Science from the University of South Australia, Australia in 1995.

Published in

NIP19: International Conference on Digital Printing Technologies
New Orleans, LA; September 2003; p. 590-594; ISBN / ISSN: 0-89208-247-X

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