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Alleviating Ink-Jet Mottle and Strike-Through in Uncoated Fine Paper

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A study examined the causes of mottle and strike-through on ink-jet printed uncoated copy paper. Mottle results from the free movement of ink on the paper surface leading to uneven ink distribution. Strike-through occurs when free ink on the surface of paper finds a defect on the surface and then funnels into and through the defect to the back side of the paper. Mottle and strike-through were quantified with a stochastic analysis method using Verity IA software. Based on the mechanism of mottle and strike-through a study was made of paper additives that would either reduce free ink or overcome surface defects. Absorbents, adsorbents, and mordents reduce mottle and strike-through. In addition, the study identified several additives that changed how paper absorbed ink-jet ink. The additives very effectively reduced the print problems. The methods of reducing mottle and strike-through can be additive as seen in recently developed surface sizing agents.

Document Type: Research Article

Publication date: January 1, 2007

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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