A study of quality attributes of different type environmental inks printing on recycle papers
| Autor: | 夏中榮 |
|---|---|
| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 Printing and papermaking have always been high-pollution industries regulated by the Environmental Protection Administration in Taiwan. In the printing industry, solvent and ink are the primary pollutants; in the papermaking industry, forest consumption for pulp and mass production of waste water in the papermaking process account for the destruction of the ecosystem. Fortunately, with the introduction of eco-friendly materials and the development of technologies during recent decades, such as recycled paper, environmentally-friendly ink, and computer to plate (CTP) application, more eco-friendly benefits will be obtained in the future if these materials and technologies can be effectively combined. This study, from the perspective of environmental protection, aims to distinguish the print qualities among the combinations of two vegetable inks: bio-ink and soy ink, in conjunction with Neo Lotus 100 recycled paper, Neo Lotus 500 recycled paper, and wood-free paper. The results will be provided for printing-related industries as a reference for selecting appropriate environmental ink and recycled paper. By finding the best combination that favors both the environment and print quality, we hope to help the printing industry improve its image and make a contribution to the world’s environmental protection. Based on a true experiment research method, two vegetable inks are applied to three types of paper with the acknowledged eco-friendliest thermal CTP technology, and the experiment is verified with an offset press. At first, 100 samples are printed on each combination; then, 40 pieces of paper are sampled via a systematic sampling method. Lastly, an X-Rite 530 Spectrodensitometer is employed to acquire the data on six print quality attributes: solid ink density, dot gain, print contrast, trapping, hue error, and grayness. Furthermore, descriptive statistics, independent sample T-test, and one-way ANOVA from SPSS 12.0 software are utilized to examine if there are great distinctions in the attributes between each combination. The following results are found in the experiment: Regarding ink: In general, bio-ink performs better than soy ink. Regarding paper: Each type of paper has its advantages and disadvantages in different quality attributes. Neo Lotus 100 recycled paper performs better in 10% dot gain, 25% dot gain, 75% dot gain, and trapping; Neo Lotus 500 recycled paper has superior effects in 50% dot gain, 90% dot gain, and print contrast; wood-free paper, in comparison, excels in solid ink density, hue error, and grayness. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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