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Positively Chargeable Full Color Toners Using Polyester Resin

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Abstract:

Polyester resin is the most popular binder for full color toners, because of the excellent dispersibility of colorants, the higher fixing ability, durability and transparency on OHP film. However, it is not easy to use polyester resin as positively chargeable color toners, because polyester resin has carboxylic groups, which show itself negative charge polarity.

Polyester resin, which has lower acid value and styrene-acrylic resin would be useful for positive charged toners, but the dispersibility of colorants is not sufficient. That causes poor chroma in the print images.

In this paper, the positive charged full color toners, which have the excellent dispersibility of colorants and the good charge stabilization, are investigated. Binder formulation consisted of polyester resin and styrene-acrylic resin. Polyester resin had high acid value for the better dispersibility of colorants and styrene-acrylic resin had alkyl-amino groups for highly positive charge. It was found that the dispersibility and the charged level are controlled by changing the ratio of two kinds of resins.

Document Type: Research Article

Publication date: 1999-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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