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Volume 32 (1995)
- Issue 6 Pages 328-
- Issue 5 Pages 264-
- Issue 4 Pages 192-
- Issue 3 Pages 120-
- Issue 2 Pages 70-
- Issue 1 Pages 2-
Volume 32, Issue 2
Displaying 1-4 of 4 articles from this issue
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Present Conditions and Subjects of Gravure Printing Press for Flexible PackagingToshiyuki FUTAKI1995 Volume 32 Issue 2 Pages 70-76
Published: March 31, 1995
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSHistory of gravure printing is not long in Japan. As for flexible packaging field, various unique systems special to Japanese have been introduced to be prevailing, influencing to gravure printing industry in foreign countries. Originally gravure printing improved as a suitable method for mass-production. Recently it's tended towards wider web, higher speed and more nos. of color. The present big problems are improvement for working conditions, counter-measures for many-kind but small-lot production and for air pollution caused by organic solvent.View full abstractDownload PDF (1673K) -
Trend of Gravure InkTsuyoshi SUZUKI1995 Volume 32 Issue 2 Pages 77-87
Published: March 31, 1995
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThe superior feature of gravure printing is high productivity and excellent print quality. Gravure printing applies to many substrates and uses-for example, publication, packaging, product materials-because of wide variety ink formulations. But gravure ink which contains much amount of organic solvents has many problems; air pollution, health hazard, dangerous fire, etc. This paper describes the present status and future trend of gravure ink. Especially, the trend of water-borne ink system is informed in detail in this paper.View full abstractDownload PDF (1906K) -
The Present Circumstances and Future Task of Gravure Cylinder MakingMasami MORIMOTO1995 Volume 32 Issue 2 Pages 88-94
Published: March 31, 1995
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSWith the introduction of the DTP technology, today's photogravure businesses have experienced tremendous changes that have never experienced before. Now that the digital data for gravure photoengraving can be created on a Macintosh by a designer, it has become extremely difficult to find the best way to appeal our existence and to survive in the industry while maintaining the reputation as a photoengraving company. While looking at the changes in the engraving technology, the conventional method has been absolutely on the decline. Nevertheless, it is interesting to see the improvement on the halftone gravure with “LaserStream” and various other mechanical engraving systems aiming at the film-less engraving and automatic cylinder handling. In conclusion, there are three words which comes to my mind when I think of the future of gravure cylinder making: digital system, networking and automation. With these three words in our mind, we must continue to struggle to establish a higher efficient mechanism for producing much higher quality cylinders.View full abstractDownload PDF (1348K) -
Tomonori YUASA, Hiromichi MISHINA1995 Volume 32 Issue 2 Pages 95-101
Published: March 31, 1995
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSColor reproduction by the halftone dot area modulation method has been traditionally used in press printing before applying it to new color imaging technology such as a printer and copying machine. However, the halftone dot area modulation easily generates the moiré pattern, because the four color halftone dot arrays with close dot interval are overlaid on the paper in color print. In other words, a pattern with lower frequency component than that of the original halftone dot image is newly formed on the image. The moiré pattern that occurs on printing image is generally called rosette since this pattern like a petal of the rose. In this report, the effect of phase shift of dot array on the color reproduction is analyzed. And the result is compared with perceptive recognition experiment about rosette pattern in the image. It is shown from this study that the rosette pattern is recognized most clearly by the observers when the phase shifted position is (u=0, v=0) and (u=5d, v=5d). In clearly recognized the color difference is 8.753. The perceptive recognition intensity of rosette pattern and the color reproduction vary with the phase of dot array.View full abstractDownload PDF (1061K)
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