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Low Energy Fusing Toner by Controlling Compatibility of Crystalline Polyester with Amorphous Polyester

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In recent years, environmental concerns and energy costs have created a need for lower energy consumption in the fusing systems of printers and copiers. To develop toner for low-energy fusing systems, we are investigating crystalline polyester (C-PES). Toner with amorphous polyester (A-PES) and C-PES had good fusing ability, but showed insufficient storage stability and durability. As already reported by Fukuri et al. in NIP24, the storage stability and durability could be improved by an annealing treatment. In the annealing process, C-PES crystalline size was controlled on a nanometer scale. In this study, we report further methods to control the crystallization of C-PES in A-PES. We found it was important to control compatibility between C-PES and A-PES in addition to annealing for adequate crystal growth. We controlled solubility parameters by varying the acid monomer in A-PES polymerization. Lower compatibility between A-PES and C-PES improved the speed and degree of C-PES crystallization during annealing. From this study, a low energy fusing toner with improved storage stability, and durability can be obtained.

Document Type: Research Article

Publication date: 2009-01-01

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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