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Characterisation of Liquid Toners Using a New Dynamic Method

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The electrical characterisation of liquid toners is of crucial importance for the further development of better materials for high performance printing. Parameters of interest are e.g. the charge and mobility of particles, since these determine the speed and the quality of the printing process. Several carrier fluids are known, mainly based on hydrocarbons, a wide range of polymers is used, and the role of surfactants as charge directors and charge control agents has become quite clear in the last few years.

In this paper, a new dynamic method to determine the mobility and the charge-to-mass-ratio of toners is presented using a combination of time-resolved current and mass detection. The advantage compared to other known methods is the separated detection of the deposited mass on electrodes of both polarities. That enables a better analysis of wrong sign particles. Results of the investigation of toners are presented, and the influence of charge control agents is discussed.

Document Type: Research Article

Publication date: 2003-01-01

More about this publication?
  • 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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