ASLAN, Bahar Gazi Üniversitesi - Teknik Eğitim Fakültesi - Matbaa Eğitimi Bölümü, Turkey , ÖZOMAY, Zafer Marmara Üniversitesi - Teknik Eğitim Fakültesi - Matbaa Eğitimi Bölümü, Turkey , KÖSE, Erdoğan Gazi Üniversitesi - Teknik Eğitim Fakültesi - Matbaa Eğitimi Bölümü, Turkey

Determination of Color Changes During The Drying Time of Ink in Offset Printing

15688

In the sheet-fed offset printing technique, the ink physically and chemically drying in accordance with the surface structure of the printing material. Dried ink needs to give a good colour intensity, while constituting a thin film on the surface of printing materials. In this study, the printed ink’s L *(lightness), a*(red-green), b*(yellow-blue) assets in definite times were measured which change depending on drying in offset printing. With these measures done in the 0, 15, 30, 45, 60 and 90. minutes on spectrophotometer standart drying conditions, how to be affected the color spaces by the drying and the settlement process’ effect on color spaces was examined. The obtained valves were formed in tables and the drying behaviours and the ΔE varietions were carried out. With color valves obtained from CIE L*a*b* kind, in which levels high color exchange occured were determined.

151

color changes , CIE L*a*b*

Journal Of Polytechnic

158