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The Effects of the Heat-set web Ink Emulsification on Printability  

Ha, Young-Baeck (Dept. of Graphic Arts Media, Shingu College)
Choi, Jae-Hyuk (Dept. of Graphic Arts Media, Shingu College)
Lee, Won-Jae (Dong Yang Ink, R&D Center)
Oh, Sung-Sang (Dept. of Graphic Arts Media, Shingu College)
Publication Information
Journal of the Korean Graphic Arts Communication Society / v.28, no.2, 2010 , pp. 31-44 More about this Journal
Abstract
Ever since the introduction of offset lithography, an operator have looked for ways to improve the process by reducing need for dampening solution. Lithography like off-set printing is processed using the repellent properties between water and oil, so all inks for lithography printing must work with dampening solution. The dampening solution may cause the emulsification of ink by the printing pressure in the printing nip. Emulsified ink changed viscosity, tack and causes problems such as bad transfer, uniform density and printed mottle. For a high quality web printing, we studied the effect of emulsified heat-set web inks on the printability, such as amount of ink transfer, printed density and uniformity. For this study, we were carried out by using IGT printability tester C1. For determination of ink properties using the spread meter and Thwing Albert Ink-o-meter, and using the densitometer and image analysis for printed quality determination. The experimental results of this study, we look forward to can be used as the basis for improve of the web print quality.
Keywords
web off-set print; emulsification; viscosity; tack; printed mottle; printability;
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Times Cited By KSCI : 2  (Citation Analysis)
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