開發國產絹雲母材料以改善彩色噴墨印刷用紙適性之研究

A Study of Domestic Sericite Materials to Improve the Compatibility of Color Inkjet Printing Paper

彩色噴墨印刷是數位影像輸出之未來趨勢，但其用紙品質亟待提昇且價格須向下調整。有鑑於過去傳統材料幾乎全仰賴進口，導致彩色噴墨印刷之數位影像輸出用紙價格居高不下。本研究主要開發本土礦產，藉由國產絹雲母獨特性質來取代傳統材料之進口矽土，從0%到20%比例進行，一共具有五種塗料配方。經過研究發現，利用絹雲母取代矽土之比例，從5%到10%時，整體色域會縮小，暗部明度值會增加。但15%開始會有突然反轉跡象，整體明度值會持續增加，同時色域範圍也不再縮小，而是往外擴張。取代矽土之比例為20%時，色域範圍往外的擴張的程度比起之前的15%要來得明顯，且整體明度值範圍更是五種比例裡面最寬廣者。暗部明度值與絹雲母取代的比例呈現正相關。色域範圍會在10%到15%之間出現反轉之情形。使用原紙基重較高之紙張其整體色域範圍、彩度、明度值會比紙張基重低之紙張效果好。雖然藉由絹雲母取代矽土，有助於明度、彩度值及色域範圍的擴張，不過還是有色相偏移之現象。本研究結果最後證實，開發國產絹雲母取代傳統材料，可以達到數位影像輸出用紙之某些高級彩色噴墨印刷適性要求目標。此外，亦可以進一步符合其成本降低之效益。

Color inkjet printing will be the trend of digital imaging output in the future, but its paper quality should eagerly be promoted and price must be down. The traditional materials to be used for the past time was almost all dependent on input sources that resulted in a high price digital imaging output paper of color inkjet printing. This research object mainly developed the domestic raw materials-sericite which replaced the traditional materials due to its characteristic properties. Input silica was replaced by domestic sericite from 0% to 20% proportion, there are five coatings formulations were prepared. The outcome of the research found out that overall color gamut decreased, the brightness of shade area increased from 5% to 10% sericite proportion. But it initiated to turn back suddenly in 15% sericite proportion, overall brightness continued to increase, color gamut domain broadened out simultaneously. In 20% sericite proportion, the color gamut domain broadened out clearly more than 15%,and overall brightness was the most widest than any proportions. The brightness of shade area increased in proportion to the sericite which replaced silica. Color gamut domain turned back from 10% to 15% sericite proportion. High basis weight base papers were used having better color gamut domain and chromatic value and brightness than those low basis weight. Although it enhanced for brightness and chromatic value and broadened out color gamut domain via sericite in place of silica, hue shift condition always appeared. This research result finally proved the required compatibility of some high color inkjet printing of digital imaging output paper while traditional materials was replaced by domestic sericite. Further, the cost reducible profit could be approached.