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Rewritable Printing System Using Leuco Dyes

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Printing systems that are capable of displaying information are becoming increasing important as greater volumes of information become available in digital format. But considering that most documents are only printed for temporary use then discarded, a rewritable printing system would be useful and advantageous for the environment. We have now succeeded in developing a practical rewritable printing system that is capable of rewriting the same sheets more than 500 times. By thermally controlling the coloring reaction of leuco dyes, the system creates stable, highcontrast color images that can be quickly erased so the sheets can be reused and overwritten with new images. This is made possible by our ability to control molecular aggregation structures formed by long-chain molecules in leuco dye developer, which opened the way to our development of functional reversible media based on the supramolecular structure of leuco dye and the long-chain developer.

Document Type: Research Article

Publication date: January 1, 2004

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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