Optimization of Process Condition for Perfect Erasing Machine for Decolorable Toner

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We have developed a perfect erasing technology to erase an image printed on a sheet of paper, with decolorable toner. The decolorable toner has leuco dye colored with developer. Heating discolors the toner due to dissociation of the dye and the developer. A human cannot recognize an image subdivided into pieces and equal brightness image against the background. These facts are known to be an area effect and a Liebmann effect in perception psychology. The image eraser has an erasing process consists of rubbing, dust cleaning and heating. After the process, a trace of the original image, such as a character, cannot be recognized. This method has achieved both complete destruction of information and renewal of the printed paper. We revealed principal factors for the erasing quality and the optimum process conditions. We demonstrated a new concept.

Document Type: Research Article

Publication date: January 1, 2006

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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