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Crystalline Polyester for Chemically Prepared Toner Having Low Energy Fusing

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Regulations for the energy consumption of printers and copiers are getting more severe year by year. And with increasingly faster machine systems, the fusing of toner on the paper gets more difficult, so the toner which can be fused with lower energy is needed. Crystalline polyester (C-PES) is known as a very effective agent for toner fusing. C-PES dispersion size in toner is very important for fusing, and nano size CPES which shows very good fusing was reported by Fukuri et al. On the other hand, chemically prepared toner (CPT,) especially emulsion aggregation toner (EA), was studied a lot in recent years. Toner from EA method can allow toner with coreshell structure, for example a low-Tg resin core that is covered with high-Tg resin shell. Therefore EA method is expected to provide both low energy fusing and good storage stability. In this report, the study of CPT toner containing C-PES is done. The effect of conventional C-PES for CPT was very poor, so we studied the melting point of C-PES for improved performance in CPT. While studying the EA toner containing C-PES, it was observed that the particle size of C-PES emulsion is very sensitive to neutralization level. We evaluated several ways to prepare better C-PES emulsions by controlling the hydrogen bonding of C-PES during emulsification.

Document Type: Research Article

Publication date: 2012-01-01

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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