韓國 新聞 印刷에서 濃度의 均一性 向上에 관한 硏究

다국어 초록 (Multilingual Abstract)

Looking around the environmental characteristics in the newsprinting of newspaper we always read in our everyday life, we have to make newsprinting at the same time within the limited timeframe and to effectively keep the consistent quality of the same image at every newsprinting factory in the whole country, which is substantially difficult due to a variety of restrictions. These characteristics have caused readers and advertisers to file complaints and newspaper companies to subsequently increase cost.

Until now the measure against these problems is that the printer's proof is divided in pieces and distributed to the factories in the metropolitan area for newsprinting. Being divided in pieces, it is very difficult to estimate the color impression on the whole. And even a divided printer's proof in a piece has not been provided to the factory outside metropolitan area. In order to overcome these barriers, the printer's proof has been used with a color print. However the difference of the color impression and the absorption characteristic between color printer's paper and newsprint causes to make difference between the printer's proof and actually printed newspaper. Eventually, the newsprinting has been proceeded depending on the operator's subjective decision at each factory in the whole country.

The necessity to settle the outstanding problem has come to the fore. First it is required to find out the factors affecting on the news-printing quality, and proper remedy and control for the affecting factors should be prepared. It is finally needed to adopt the appropriate management tool for the consistent quality all over the news-printing factories.
This study identified the effective factors affecting on newsprinting and the optimum conditions based on these factors. We also determined the composition combination of the gray balance bar suitable to the newsprinting, as the proper tool for maintaining the consistent quality at each the newsprinting factory, and analyzed its effects on newsprinting after having applied the gray balance bar into the actual design of newspaper print. The application of the gray balance bar into the news-printing of the domestic factories has turned out to be excellent.

The composition of the gray balance bar was calculated applying the Dot-Area Correlation Equation of C, M and Y. When calculating the equation with 22% of C, both M and Y were 15%. This composition rate is almost the same scale to that of the subjective evaluation, which was C:22%, M:15% and Y:16%. In this study, therefore, we adopted the color of gray with C:22%, M:15% and Y:16% as the best gray balance bar matched with the design of newspaper. Also, the above-mentioned gray balance bar has been actually applied into 5 newsprinting factories for one month, and through this application it is confirmed that the density of printed newspaper is stable and well-balanced and shows excellent quality within the acceptable error range, which we consider is experimentally proved.

목차 (Table of Contents)

• 목차 ⅰ
• List of Figures ⅴ
• List of Tables ⅳ
• Abstract ⅷ
• 제1장 서론 1
• 1. 연구 배경 1
• 1-1.국내외 인쇄환경 변화 1
• 1-2.신문 인쇄 품질 균일화 필요성 2
• 1-3.국내외 인쇄품질 관리의 현황 5
• 1-4.인쇄품질의 시각적인 특성과 대처방안 7
• 2. 연구 범위 9
• 3. 연구 목표 9
• 제2장 이론적 배경 10
• 1. 인쇄적성 개요 10
• 2. 전이계수 이론 11
• 3. 그레이 밸런스 이론 16
• 4. 인쇄적성 표준화 관련 외국의 연구 사례 19
• 4-1.FIPP 21
• 4-2.PIRA International 21
• 4-3.SWOP 22
• 4-4.FOGRA 22
• 4-5.UKONS 22
• 4-6.SNAP 23
• 4-7.국내 인쇄품질 표준화 동향 23
• 5. 신문인쇄 공정 23
• 6. 신문인쇄 옵셋 윤전기의 구조 25
• 제3장 실험 28
• 1. 신문인쇄 품질 조사 28
• 2. 신문인쇄 조건 변동 실험 29
• 2-1.신문 윤전 인쇄에서의 잉크 공급량 변동 실험 29
• 2-2.축임물 공급 변동 실험 30
• 2-3.인쇄 속도 변동 실험 31
• 2-4.인압측정 실험 32
• 3. 전이율 측정 실험 32
• 4. 그레이 밸런스 바 도입과 적용 실험 33
• 4-1.그레이 밸런스 바의 도입 실험 33
• 4-2.그레이 밸런스 바의 적용 실험 36
• 제4장 결과 및 고찰 37
• 1. 육안관리에 의한 품질 변화 37
• 1-1.신문윤전에서 타워 유니트별 육안관리 현황 측정 37
• 1-2.신문윤전에서 새틀레이트 유니트별 육안관리 현황 측정 39
• 1-3.신문윤전에서 하프덱 유니트별 육안관리 현황 측정 41
• 1-4.동일공장내 윤전기 세트별 농도 변화 42
• 2. 신문인쇄의 조건변동 45
• 2-1.잉크 공급량 변화에 따른 타워 유니트별 특징 45
• 2-2.잉크 공급량 변화에 따른 하프덱 유니트별 특징 48
• 2-3.인쇄 속도 변화에 따른 타워 유니트별 특징 49
• 2-4.인쇄 속도 변화에 따른 새틀레이트 유니트별 특징 50
• 2-5.인쇄 속도 변화에 따른 하프덱 유니트별 특징 51
• 2-6.공장 별 필름 출력 품질 51
• 2-7.인쇄 유니트에서 압력 분포 측정 결과 52
• 2-8.축임물의 전도도 변화에 따른 농도 품질 53
• 2-9.축임물 변화에 따른 영향의 분석 54
• 3. 국내 대표 지종의 전이율 실험 결과 58
• 3-1.P사 용지의 최대 전이율 분석 58
• 3-2.J사 용지의 최대 전이율 분석 60
• 3-3.D사 용지의 최대 전이율 분석 62
• 4. 그레이 밸런스 바의 활용 결과 63
• 4-1.2차 주관평가 결과 63
• 4-2.그레이 밸런스 조합의 상관성 평가 결과 64
• 4-3.5개 공장에서의 그레이 밸런스 바 농도 측정 결과 69
• 4-4.그레이 밸런스 바 적용에 따른 각 공장별 색상 일관성 평가 72
• 제5장 결론 76
• Reference 78