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Properties and Printer Performance of Wax-containing Polyester Toners Prepared by Chemical Milling

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Recently oiless color laser printing and wax-containing color toner are gaining popularity in the market for reasons of a simpler fuser design and a small number of consumables. We developed polyester color toner containing a wax inside the toner particles using proprietary Chemical Milling Process.

The CM toner® particles were substantially spherical in shape, their mean diameters in the range of 3-15 μm and the size distribution was uniform with the 80% span in the range of 0.5-1.0. A wax-content in the particles as high as 15 wt.% was achieved. The wax-incorporation significantly broadened the fusing latitude of CM toner® in comparison with the toner with no wax component, especially by increasing the hot offset temperature up to 190°C in a high speed (24ppm) oiless fusing unit.

The DPI-proprietary CM toner® process utilizes the surface chemical interaction between a partially-polar polyester resin and a non-polar dispersion medium as well as mechanical agitation to produce toner particles with a small diameter. However, to achieve the wax incorporation in the toner particles, we modified the process to be conducted in a highly polar dispersion medium so that non-polar wax is encapsulated in the particles. In the presentation, we will describe the details of the physical properties and printer performance of the wax-containing CM toner®.

Document Type: Research Article

Publication date: January 1, 2002

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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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