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Metallic Donor for Direct Digital Halftone Proofing

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A continuing trend in the printing industry is the increased use of specialty inks, not the least of which are the metallics. To achieve the desired specular reflection characteristics, metal flake pigments are used in the ink formulation. In order to provide a reasonable match to the expected printed product, a direct digital halftone color proofing was developed utilizing the same metal flake pigments as are used in typical lithographic inks. The use of non-volatile pigments necessitates the use of bulk transfer donor architecture. A two-layer film structure was developed wherein a metal flake pigment containing layer overlies an IR radiation sensitive propellant layer. Gasification of the propellant layer upon exposure by an 830 nm laser diode array provides the motive force to transfer the pigment layer from the donor to a receiver. Donor structure options, imaging mechanism sensitivities, and salient material properties are discussed.

Document Type: Research Article

Publication date: January 1, 2002

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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