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Low energy fusing toner by controlling nano dispersion of crystalline polyester

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In recent years, it is required that the toner can be fused at lower energy from the viewpoint of saving energy. As it has already been reported by Shirai et al, it is achieved good fusing ability by using amorphous polyester including crystalline polyester (C-PES). It is supposed that the good fusing ability is due to drastic change of elasticity of C-PES around melting point.

On the other hand, the toner including C-PES showed the poor storage stability. As it has already been reported by Fukuri et al in NIP23, the storage stability could be improved by anneal treatment. It was considered that the crystallization of C-PES was promoted and the crystallinity of the toner could be improved by anneal treatment, resulting in the improvement of the storage stability.

In this study, it is investigated the crystallization mechanism of the toner including C-PES in anneal treatment. It is found that crystals are dispersed with nano-size in the toner by AFM observation. Furthermore, it is found that by nano dispersion of C-PES, the toner that satisfied the low energy fusing, the storage stability, and the durability can be obtained.

Document Type: Research Article

Publication date: January 1, 2008

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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