Enabling Expanded Color Gamut and In-line Coating Processes

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Abstract:

Most four-color printing processes that are extensively used in electrophotographic (EP) applications today are based on the SWOP (Specifications for Web Offset Publications) colorants. Although, this set of colorants offers many advantages, it fails in many aspects as it does not deliver many often requested colors in digital printing. For example, most corporate identity colors cannot be faithfully reproduced with the available gamut possible with this color set. Most attempts to increase the color gamut by selecting high chroma colorants only provides marginal improvements. At the same time these colorants can have high impact on toner performance developer life. Many of the limitation of a four color system can be addressed by a adding fifth module in the digital color press. One such digital press now commercially available, is NexPress 2100. By proper selection of fifth color DryInk™ or toner, and utilizing pentachrome process, Nexpress 2100 digital press manages to expand color gamut on demand while still continuing to utilize the standard CYMK toners. The result is a low cost solution to matching most colors that are often demanded by customers. With the availability of fifth module, it is also possible to use it to apply a clear overcoat in an intelligent manner. Such a coating process is truly inline and offers efficient workflow solutions. Clear Overcoats provides superior protection and enhance many image quality attributes. Many capabilities and limitations of fifth module will be presented. Impact on EP process and color gamut by the colorant selection will also be discussed.

Document Type: Research Article

Publication date: January 1, 2004

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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