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Micro liquid absorbency of ink-jet media

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In ink-jet printing, ink absorption behavior of printing media is closely related to its print quality. The velocity of liquid absorption into paper is regularly evaluated with a Bristow type tester or by measuring the change in contact angle alternatively. In this study, from the shape of a projected hemisphere of water drops, the changes in volume, contact angle, height and radius of circular contact area were measured using a microscopic video camera. Those shape parameters were compared between water drops ejected from a test ink-jet head and landing on a surface of the photo grade and general grade of ink jet papers. The absorption rate was found not to be varied between the grades although more research is necessary for more exact mechanisms. The volume of a water drop that landed on a once-wetted surface decreased more slowly than on an unwetted surface and the contact angle was lower at equivalent times after landing.

Document Type: Research Article

Publication date: January 1, 2006

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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