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A New, Full-Color, Direct Thermal Imaging System

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A direct thermal printing medium is described that incorporates two color-forming layers separated by a thermally-insulating layer. Any combination of the two colors may be obtained by heating with a conventional thermal print head. Independent addressing of each color is achieved by controlling the time of heating and the power supplied to the heating elements of the print head. In combination with a third color-forming layer that is printed from the reverse side of the medium, full-color imaging with photographic quality is possible using two passes with a single thermal print head or a single pass with two print heads. A novel thermal color-forming process based upon phase change of colorless crystals provides images of excellent quality and stability.

Document Type: Research Article

Publication date: 2005-01-01

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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