Patent ID: 6656545
Filing Date: 2003-12-02
Classification: B41M

Abstract:
An ink jet recording medium comprising a substrate and an ink receiving coating layer on said substrate, said coating layer having a weight of 8-16.5 g/m2 and a thickness of 8-12 &mgr;, said coating layer comprising a plurality of pigments, 75-90 parts per 100 parts dry weight of said pigments being a non-agglomerated, absorptive silica having a primary pore volume of 0.5-2.0 g/m2, and 10-25 parts per 100 parts dry weight of said pigments being alumina; 30-50 parts per 100 parts dry weight of said pigments being a water soluble, partially hydrolyzed, low molecular weight polyvinyl alcohol binder; and 4-10 parts per 100 parts dry weight of said pigments being a water soluble, polycationic quaternary ammonium polymer fixing agent; said coating layer having a surface pH value of 4.5-5.5.