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Relationship Between Initial Absorption Behavior of Ink-Jet Inks and Three-Dimensional Distribution of the Fixed Inks in Paper

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Novel techniques for examining fixation processes of a dye ink dot on paper and three-dimensional geometry of the fixed ink dot were developed and applied.

Most magenta and black dye inks for ink-jet contain fluorescence agents or use fluorescence dyes specific of the color. Fluorescence emitted from those of the ink-jet inks provides a three dimensional ink distribution by the optical slicing function of a confocal laser scanning microscope. In applications, several facts were revealed. Ink dot shape was like a coin with a constant thickness on photo quality paper. Ink spreads over crack surfaces on high gloss type paper a few times deeper than the normal penetration.

Microscopic high-speed video capture system was established to visualize ink drop spread on and penetration into paper. Changes in ink dot area and dot roughness with time were evaluated from microscopic video images. Ink drop behavior on trial coated paper from commercially available calcium carbonate pigment and from its ball-milled pigment was recorded. Small particle size by ball milling reduced the dot area, but dot area continued to change for a longer time than that for the untreated sample, as is explained in terms of small pore size according to Lucas-Washburn's equation.

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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