Patent ID: 7615265
Filing Date: 2009-11-10
Classification: B41M,G01N

Abstract:
1. A recording material for an inkjet printing process comprising a substrate and an ink receiving layer applied on at least one side of the substrate, the ink receiving layer containing an inorganic pigment and an ink fixative comprising at least first and second substances, the first substance being a polyamine epichlorohydrin and the second substance being a polyvalent metal salt, wherein the first substance is a branched polyamine epichlorohydrin condensation product that has a viscosity in a range from 15 m Pa*s to 50 m Pa*s as a 10-percent aqueous solution as determined by using a Brookfield spindle 1 at 100 rpm and 25° C., the ratio of the first substance to the second substance is between 3:1 and 16:1, at least 80 percent by weight of the pigment is made of particles having a D 50 particle size (Malvern) ranging from 4 μm inclusive to 12 μm inclusive, and the ratio of ink fixative to pigment ranges from 1:2 inclusive to 1:6 inclusive.