Tutak Dogan, Karademir Arif, Aydemir Cem, Aravamuthan Raja
2 Department of Printing Technologies, School of Applied Science, Marmara University, Istanbul - Turkey.
1 Department of Forest Product Engineering, Bursa Technical University, Bursa - Turkey.
J Appl Biomater Funct Mater. 2018 Apr;16(2):76-82. doi: 10.5301/jabfm.5000386.
In our contemporary world, while part of the fibers used in the paper industry is obtained from primary fibers such as wood and agricultural plants, the rest is obtained from secondary fibers from waste papers. To manufacture paper with high optical quality from fibers of recycled waste papers, these papers require deinking and bleaching of fibers at desired levels. High efficiency in removal of ink from paper mass during recycling, and hence deinkability, are especially crucial for the optical and printability quality of the ultimate manufactured paper.
In the present study, deinkability and printability performance of digitally printed paper with toner or inkjet ink were compared for the postrecycling product. To that end, opaque 80 g/m office paper was digitally printed under standard printing conditions with laser toner or inkjet ink; then these sheets of paper were deinked by a deinking process based on the INGEDE method 11 p. After the deinking operation, the optical properties of the obtained recycled handsheets were compared with unprinted (reference) paper. Then the recycled paper was printed on once again under the same conditions as before with inkjet and laser printers, to monitor and measure printing color change before and after recycling, and differences in color universe.
Recycling and printing performances of water-based inkjet and toner-based laser printed paper were obtained. The outcomes for laser-printed recycled paper were better than those for inkjet-printed recycled paper.
Compared for luminosity Y, brightness, CIE a* and CIE b* values, paper recycled from laser-printed paper exhibited higher value than paper recycled from inkjet-printed paper.
在当今世界，造纸工业所使用的部分纤维来自木材和农作物等原生纤维，其余则来自废纸中的二次纤维。为了用回收废纸纤维制造出具有高光学质量的纸张，这些纸张需要进行脱墨处理，并将纤维漂白至所需水平。在回收过程中高效去除纸浆中的油墨，即脱墨性，对于最终制成纸张的光学和可印刷性质量尤为关键。
在本研究中，对回收后的产品中使用碳粉或喷墨墨水数字印刷的纸张的脱墨性和可印刷性进行了比较。为此，在标准印刷条件下，用激光碳粉或喷墨墨水对80克/平方米的不透明办公纸进行数字印刷；然后根据INGEDE方法11 p对这些纸张进行脱墨处理。脱墨操作完成后，将所得回收手抄纸的光学性能与未印刷（参考）纸进行比较。然后，在与之前相同的条件下，再次使用喷墨打印机和激光打印机对回收纸进行印刷，以监测和测量回收前后的印刷颜色变化以及色域差异。
得出了水性喷墨和碳粉基激光印刷纸的回收和印刷性能。激光印刷回收纸的效果优于喷墨印刷回收纸。
与亮度Y、白度、CIE a和CIE b值相比，激光印刷纸回收的纸张比喷墨印刷纸回收的纸张具有更高的值。
