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Application of Thermal Printing Technology for Security Printing

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Direct thermal and thermal transfer printing methods can be used for creating documents with embedded permanent images and texts as security codes, which are visible only under ultraviolet light. Copying or scanning of the documents cannot reproduce these images. Such documents can be created by direct thermal printing of single sheets, containing single or multi-layer coatings of image forming components, by single or multi-pass printing. A combination of direct thermal and thermal transfer methods can also be used for generating similar documents by single-pass printing.

Single sheet direct thermal process, in which the printed images gradually fade with time, can be used for creating documents for temporary identification. The length of time required for such fading can be controlled by proper selection of the components of the imaging systems.

Document Type: Research Article

Publication date: 2007-01-01

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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