Patent ID: 6074528
Filing Date: 2000-06-13
Classification: B41M,D21H,Y10T

Abstract:
A paper surface treatment formulation for printing paper comprising:a pigment comprising hollow spherical synthetic polymeric particles in an amount of about 30-60% by weight of the total dry ingredients of the formulation; anda binder comprising a high molecular weight modified starch in an amount of about 40-70% by weight total dry ingredients of the formulation;wherein the formulation has a solids content of about 10-30% by weight, the remaining percentage being water; andwherein the formulation has a viscosity that is about 2,000-4000 c.p.s. (Brookfield, 100 r.p.m.) when the formulation is agitated at room temperature, and that increases to greater than about 8,000 c.p.s. (Brookfield, 100 r.p.m.) when the formulation is unagitated at room temperature.