公开(公告)号：US5720806A

公开(公告)日：1998-02-24

申请号：US722830

申请日：1996-09-27

申请人： Tsuneo Fujii ,  Hiroshi Tonoike ,  Daisaku Isomura

发明人： Tsuneo Fujii ,  Hiroshi Tonoike ,  Daisaku Isomura

IPC分类号： B41M5/00 ,  B41M5/50 ,  B41M5/52 ,  C09C1/30 ,  D21H19/38 ,  C08K5/00

CPC分类号： C09C1/30 ,  B41M5/52 ,  B41M5/5218 ,  C01P2002/02 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/19 ,  C01P2006/22

摘要： The invention provides a filler for ink jet recording paper which is composed of an amorphous silica containing 0.3-1.0% by weight of Al.sub.2 O.sub.3 and having a BET specific surface area of 250-400 m.sup.2 /g, a mean particle size of 3.6-10.0 .mu.m and a peak position of pore radius as measured by mercury injection method of 37.5-75 angstrom. A coat layer of ink jet recording paper formed of this filler excels not only in true circle property of dots and ink absorbing property when printed by ink jet recording system, but also in surface strength and writing quality. Furthermore, the coating liquid containing this filler has a low viscosity and hence exhibits good coating workability.

摘要翻译： 本发明提供一种喷墨记录纸用填料，其由含有0.3〜1.0重量％的Al 2 O 3的无定形二氧化硅构成，BET比表面积为250〜400m 2 / g，平均粒径为3.6〜10.0μm m和通过汞注入法测量的孔半径的峰值位置为37.5-75埃。 由该填料形成的喷墨记录纸的涂层不仅在通过喷墨记录系统打印时不但具有点和油墨吸收性的真实圆特性，而且还具有表面强度和书写质量。 此外，含有该填料的涂布液的粘度低，因此具有良好的涂布加工性。