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1. 发明申请

US20070221350A1 Low-Density Neutral Paper 失效
标题翻译：低密度中性纸
公开(公告)号：US20070221350A1
公开(公告)日：2007-09-27
申请号：US10599135
申请日：2005-03-15
申请人： Kazunari Soga , Dai Nagahara , Kazuyuki Fujita , Takashi Ochi , Koji Kutsuwa , Katsumasa Ono
发明人： Kazunari Soga , Dai Nagahara , Kazuyuki Fujita , Takashi Ochi , Koji Kutsuwa , Katsumasa Ono
IPC分类号： D21H17/68
CPC分类号： D21H17/69 , C01P2004/61 , C01P2004/62 , C01P2004/80 , C01P2006/12 , C01P2006/19 , C01P2006/60 , C09C1/024 , D21H17/675 , D21H21/52 , Y10T428/253
摘要： The present invention provides a low-density neutral paper offering excellent opacity, opacity after printing and other advantageous printability properties despite high bulk, by containing, as a filler, precipitated calcium carbonate-silica composite having an average particle size of 30 μm or less and produced by neutralizing a mixture of precipitated calcium carbonate and alkaline silicate to pH 7 to 9, wherein the ratio of precipitated calcium carbonate to silica (precipitated calcium carbonate/silica) is 30/70 to 70/30 in solid content by weight and the surface of precipitated calcium carbonate particles is covered with silica. In particular, the present invention provides a low-density printing paper, or an electrophotographic transfer paper offering excellent stiffness and copier suitability, by means of adjusting the filler content in paper to a range of 1 to 25 solid content percent by weight, or provides a neutral newsprinting paper by means of adjusting the filler content in paper to a range of 0.1 to 25 solid content percent by weight.
摘要翻译：本发明提供一种低密度中性纸，通过含有平均粒径为30μm以下的沉淀碳酸钙 - 二氧化硅复合体作为填料，提供了印刷后具有优异的不透明度，不透明度和其它有利的印刷适应性，通过将沉淀碳酸钙和碱性硅酸盐的混合物中和至pH7至9，其中沉淀碳酸钙与二氧化硅（沉淀碳酸钙/二氧化硅）的比例为固体重量比为30/70至70/30，表面积的沉淀碳酸钙颗粒被二氧化硅覆盖。特别地，本发明通过将纸中的填料含量调节至1至25固体含量百分比的范围来提供一种低密度印刷纸或提供优异刚度和复印机适用性的电子照相转印纸，或提供中性的新闻纸通过将纸中的填料含量调节至0.1至25固体含量的重量百分比的范围。

2. 发明授权

US07611606B2 Low-density neutral paper 失效
标题翻译：低密度中性纸
公开(公告)号：US07611606B2
公开(公告)日：2009-11-03
申请号：US10599135
申请日：2005-03-15
申请人： Kazunari Soga , Dai Nagahara , Kazuyuki Fujita , Takashi Ochi , Koji Kutsuwa , Katsumasa Ono
发明人： Kazunari Soga , Dai Nagahara , Kazuyuki Fujita , Takashi Ochi , Koji Kutsuwa , Katsumasa Ono
IPC分类号： D21H11/00
CPC分类号： D21H17/69 , C01P2004/61 , C01P2004/62 , C01P2004/80 , C01P2006/12 , C01P2006/19 , C01P2006/60 , C09C1/024 , D21H17/675 , D21H21/52 , Y10T428/253
摘要： The present invention provides a low-density neutral paper offering excellent opacity, opacity after printing and other advantageous printability properties despite high bulk, by containing, as a filler, precipitated calcium carbonate-silica composite having an average particle size of 30 μm or less and produced by neutralizing a mixture of precipitated calcium carbonate and alkaline silicate to pH 7 to 9, wherein the ratio of precipitated calcium carbonate to silica (precipitated calcium carbonate/silica) is 30/70 to 70/30 in solid content by weight and the surface of precipitated calcium carbonate particles is covered with silica. In particular, the present invention provides a low-density printing paper, or an electrophotographic transfer paper offering excellent stiffness and copier suitability, by means of adjusting the filler content in paper to a range of 1 to 25 solid content percent by weight, or provides a neutral newsprinting paper by means of adjusting the filler content in paper to a range of 0.1 to 25 solid content percent by weight.
摘要翻译：本发明提供一种低密度中性纸，通过含有平均粒径为30μm以下的沉淀碳酸钙 - 二氧化硅复合体作为填料，提供了印刷后具有优异的不透明度，不透明度和其它有利的印刷适应性，通过将沉淀碳酸钙和碱性硅酸盐的混合物中和至pH7至9，其中沉淀碳酸钙与二氧化硅（沉淀碳酸钙/二氧化硅）的比例为固体重量比为30/70至70/30，表面积的沉淀碳酸钙颗粒被二氧化硅覆盖。特别地，本发明通过将纸中的填料含量调节至1至25固体含量百分比的范围来提供一种低密度印刷纸或提供优异刚度和复印机适用性的电子照相转印纸，或提供中性的新闻纸通过将纸中的填料含量调节至0.1至25固体含量的重量百分比的范围。

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