Ink Tack

2171 WordsOct 22, 20089 Pages
Instrumentation Test #1 – Inkometer Tack Test Scope and Summary The property tested was tackiness of ink in difference printing conditions. Both variable speeds and temperatures were recorded and analysed. This test helped determine and understand the relationship of ink in press running conditions (speed and temperature) and the tack property. Further research helped identify possible tack related problems and solutions. The results showed up as expected in conjunction with the research found and previous tests on the tack property. The speed of the press greatly increased the tack while the temperature lowered it. Initially when recording early readings, the tack was much lower on the higher temperature setting (100…show more content…
However, when comparing the same rpm tests together (tables 1.1 vs. 2.1 and tables 1.2 vs. 2.2) shows that at the beginning of test there are differences. The difference in that the higher temperature test (100˚F) starts off with a lower tack reading than the lower temperature test (90˚F). The tack was higher on a lower temperature setting at the beginning of the test’s recordings, but eventually evened out with the higher temperature setting, when tested at the same rpm speed, at the end of the 10 minutes of testing. This occurred with both comparison with the same rpm values (tables 1.1 vs. 2.1 and tables 1.2 vs. 2.2). In conclusion to these results, it was speculated, and later confirmed, that temperature setting has an impact on the tackiness of the ink, but the rpm creates a hotter temperature through means of friction than that of the controlled 90˚F and 100˚F temperatures. In accordance to our results, tack is affected marginally by both speed and temperature at which the press operates at. However, when the results were compared, tack values were
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