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Spectral Pre-Compensation and Security Print Deterrent Authentication

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Security printing and imaging is the application of printing to provide product authentication and brand protection through the use of difficult to reproduce (overt) effects and the addition of data (overt, steganographic, covert and forensic) to the printed elements. The density of data added to security deterrents can be improved through the process of pre-compensation. Structural pre-compensation involves altering the size and shape of a printing element so that after reading (printing and scanning) the element better matches its intended size and shape. In this paper, we address spectral pre-compensation, in which the colors of the color tile, a 3D bar code, are changed before the printing and scanning take place. We show the increased security deterrent density possible using this approach using inkjet and dry electrophotographic printing technologies. We also show that the technology is generally applicable except in cases where there is a printing quality issue. Thus, spectral pre-compensation is shown to be generally applicable for testing print quality and increasing security deterrent density simultaneously.

Document Type: Research Article

Publication date: 2008-01-01

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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