Single‐layer coatings Both cationic and anionic coating formu- lations were made at 3, 5, 7, and 10 pph of SB latex at a total of 45% solid content. The amounts of PCC and SB latex used in the coating formulations are given in Table 1. To make a single layer coating, a volume of 6 mL of the coating formulation was used. The coating speed was 0.04 m/s, and the gap between paper and rod was approximately 20 microns. The paper was then air-dried for 4 min, followed by 5 min at 105 °C in an oven. Five papers of each coating were prepared, and all coated papers had a measured coat weight in the range of 9 ± 2 g/m2.