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Ink-Specific Handheld Readers and Security Variable Data Printing (SVDP)

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Abstract:

Counterfeiting and other forms of fraud (smuggling, product diversion, product dilution, etc.) is a growing worldwide trade problem, constituting between 5-10% of world trade [1]. Repercussions of counterfeiting differ based on the product, but include reduced consumer safety, brand value erosion, and the funneling of large funds into criminal hands. Since printing is used for brand and product identification, pricing and product information, and retailer stocking, it is logical to use printing for security. Powerful variable data printing (VDP) technologies already exist for several printing methods, including inkjet (IJ) and liquid electrophotography (LEP). Using IJ and LEP technologies to provide package, pallet and/or product security is called Security VDP, or SVDP. In this paper, we describe how the use of security inks with narrow, reproducible excitation and emission bandgaps can be coupled to the development of ink-specific handheld readers (ISHRs). The ISHR is constructed by matching its light source (e.g. LEDs) to the excitation bandgap of the ink, and matching its filters to the emission bandgap of the ink. Its application to ultraviolet (UV), infrared (IR) and visible SVDP deterrents is provided, along with data from trials to co-qualify the inks and ISHRs on, for example, 2D Data Matrix bar codes and other counterfeiting deterrents. These readers can be made overt-or covert-ink specific, complementing the security of the inks with the security of the devices.

Document Type: Research Article

Publication date: 2006-01-01

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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