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Effects of Particle Size on Imaging Performance of Chemical Color Toner

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With recent broad acceptance of chemical toner technology in electrophotography, toner particle size in use is becoming dramatically small. Intuitively speaking, smaller toner size enables many printing advantages such as higher image resolution, less toner usage, faster fusing, etc. Surprisingly, however, there is little direct and systematic data in the literature.

As an initial step to build a robust database of the particle size effects on EP performance, especially, of chemical toner, spherical polyester toner particles with five different (volume) average diameters (4.5, 5.8, 6.8, 7.8 and 8.8 microns) were prepared using chemical milling process and an identical external additive formulation was applied to prepare the toner compositions. Their physical characteristics (charging, fusing, particle flow, etc.) were determined. Also, their printing performance characteristics such as color intensity, image uniformity, image defects, toner consumption, etc. were determined using a HP CP1215 printer. The results are then to be interpreted in terms of expanded surface area of smaller size toner.

Document Type: Research Article

Publication date: January 1, 2009

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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