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彩色噴墨印刷用纸之研製及印刷性質評估

Preparation of Color Ink-jet Papers and Evaluation of Their Printing Quality

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摘要


本研究係使用塗佈法以不同之粘著劑(苯乙烯丁二烯乳膠、苯乙烯-順丁烯二酸、水溶性聚脲樹脂、聚乙烯醇)、顔料(二氧化矽,膠體型合二氧化矽,沉澱碳酸鈣,溼磨碳酸鈣,白土等)塗佈於紙面上,改善紙張表面性質,以製備具高印刷品質(吸墨性佳、發色性佳、高解析度及高印刷色飽和等)、耐水性、耐光性單色、彩色噴墨專用塗佈紙。分析搜集市售十四種噴墨印表紙及自製塗佈型噴墨印表用紙,經印表機列印,由印刷後紙張上的色濃度、網點擴散、印刷反差等印刷性質,顯示自製噴墨印刷紙之配方可媲美市售之高階紙樣,具有較佳的色濃度值及網點擴散值及印刷反差。無論使用何種粘著劑,添加表面上膠改善劑後,其印刷色濃度均會明顯的提升,紙張列印表面品質亦呈現明顯的舒適感。採用微細粒子二氧化矽作爲顔料可研製出高色濃度值,低綱點擴散率,高印刷反差之噴墨印刷用紙。同時檢討碳酸鈣或白土來降低塗料之成本,結果顯示利用50%的沉澱碳酸鈣或濕磨碳酸鈣以取代二氧化矽仍可達到市售紙優等之品質。爲增加紙張的表面抗水性質,可於粘著劑添加交聯助劑的條件下(在顔料中填加1%的硫酸鋁或陽離子性高分子如C-PAM或C-DADMAC),即可增加印刷之抗水性,且不影響其印刷性質。

並列摘要


In this study, we used different binders (latexes. SMA, PU, and PVA). and pigments (amorphous silica, colloidal silica, precipitated calcium carbonate [PCC], grounded calcium carbonate [GCC], kaolin, etc.) to coat the surface of base paper and modify the surface properties in an effort to prepare ink-jet papers of high printing performance (good absorbency, good ink hold-out, high resolution, and high printed color intensity), good water resistance, and good light-fastness for black-and-white and color printing purposes. We also collected 14 varieties of commercial ink-jet papers and subjected them to analyses and comparisons with the lab-prepared specimens. After printing with a standard printer, the printing quality parameters, such as color density, dot diffusion, contrasts, etc, were individually evaluated. The results indicated that our lab-prepared specimens matched or exceeded the performance of high-grade commercial products. The papers had better rendering of colors, dot diffusion, and print contrasts. Regardless of which binders were used, the addition of the process of surface sizing markedly improved the printed color density, while the printed surfaces provided viewers with a comfortable feeling as well. Minute particle-sized silica can be used to prepare ink-jet papers of high color strength, low dot diffusion, and good print contrasts. We also used calcium carbonate and kaolin to lower the cost of the coating color Results indicated that 50% replacement of silica with PCC or GCC could achieve performances equivalent to those of superior market products. In order to increase the water resistance of the paper surface, a cross-linking agent was added to the binder or 1% alum or cationic polymers such as C-PAM or C-DADMAC were added all of which improved the post-printing water resistance of the paper without affecting the printing quality.

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