원문정보
초록
영어
Printed mottle of coated paper is one of the most common phenomenon and the most difficult problem in offset printing. Off-set printing is processed mainly processed by the attractive properties between water and oil, so all inks for off-printing must work with dampening solution(water). It may cause the emulsion on the printing nip from the printing pressure. This study aimed to investigate the effect of emulsified inks on print mottle from emulsified cyan ink by force with each different IPA contents. We measured the print mottle by densitometer and image analysis method. The emulsified inks also give effect to flow properties of inks and it caused more ink transfer rate, however, it caused low density of inks. Moreover the emulsified inks were spreaded to around of dots and cause the thinning density on the non-printing area like print mottle. The results showed that the emulsified inks also cause scumming on the printing result with little mistake of adjusting dampening solution and mostly decreasing dot reproduction. So we could find out the obvious effect of emulsified inks to print mottle.
목차
1. 서론
2. 실험
2-1. 실험 재료
2-2. 실험 및 평가 방법
3. 결과 및 고찰
3-1. 잉크 유화에 따른 전이율과 인쇄 색농도
3-2. 잉크 유화에 따른 모틀 발생 면적율 및 line scan 결과
3-3. 본인쇄 결과
4. 결론
참고문헌