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Light-Heat Conversion Material for Dye Thermal Transfer by Laser Heating

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In a laser thermal transfer printing using dye sublimation type medium, a high definition and continuous tone image can be obtained easily because a laser light is focused to small spot and heat energy can be controlled by the pulse width modulation of laser light. The ink donor sheet is composed by the laser light absorbing layer and the ink donor layer. We have investigated light-heat conversion efficiency for several IR light absorbing materials in the ink donor sheets. Carbon black, metal-phthalocyanine pigment and dye, metal complex organic compound, and cyanine dye were used as light-heat conversion materials. As experimental results of dye transfer from ink donor layer to receiving sheet by laser heating, each sample exhibits different dye transfer characteristics according to kind of light-heat conversion materials. By the measurement of absorption spectra of laser light absorbing layers after laser heating, it became clear that the phenomena such as the decomposition reaction and the crystal phase transformation of light-heat conversion materials were caused by laser heating. We have concluded that it is necessary for a high heat generation efficiency to have no change of IR light absorption by laser heating.

Document Type: Research Article

Publication date: January 1, 1998

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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