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Toner Binder Resins with Improved Fusing Properties

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This study describes the latest progress in toner binder design to achieve low fusing temperatures as required for new energy regulations like the ZESM (Zero Energy Stand-by Mode).

Conventionally low temperature fusing is realized by reducing the molar mass of the binder polymer. In parallel with a reduced melt viscosity the glass transitions temperature Tg decreases resulting in a poor storage ability. This phenomenon is reviewed for typical toner binder resins like styrene acrylics and polyester and compared to cycloolefin-copolymers COC derived from ethylene and norbonene (trade name: TopasĀ® of Ticona, Germany). For these new materials the glass transition temperature is easily adjusted by incorporating different amounts of the cyclic olefin into the polymer meaning that the Tg of COC can be controlled independently of molar mass. Thus an optimum balance between low melt viscosity necessary for low temperature fusing and excellent anti blocking properties is obtained.

In addition TopasĀ® COC binder resins offer a unique combination of surface, electrical, mechanical and environmental friendly properties which is ideal for using these material as toner binder resins.

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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