塗工紙のインキ吸収性とインキトラッピング [in Japanese] Ink Absorptivity and Ink Trapping for Coated Paper [in Japanese]
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Some properties of coated paper influenced to the ink trapping, which is an important factor for printability of coated paper, were studied using overprintings printed with cyan and magenta inks. From the estimation of ink trap ratio by density measurements for commercial A2 coated paper, decreasing of ink trap ratio was observed by decreasing the interval time between 1st and 2nd color printing. Same method was applied for three kinds of coated paper which had different diameters (2.20, 1.50, 0.85μm) of ground calcium carbonate as a pigment and quantitative estimations were made. Pore size distributions of coating layers and time dependences of contact angles between coated paper and oil included in printing ink used in this study were also measured. From these results, it was shown that the interval time and the ink trap ratio at the starting point of decreasing the ink trap ratio was not concerned only with the coating structure of coated paper but also with the properties of pigment in the coating layer.
- Bulletin of the Technical Association of Graphic Arts of Japan
Bulletin of the Technical Association of Graphic Arts of Japan 35(2), 64-73, 1998-03-31
The Japanese Society of Printing Science and Technology