web is engaged against a backing roll and travels through the coating pond past a metering blade which applies coating from the pond to the web the bars induce a turbulent flow which shears bubbles of air entrained in the coating pond thereby reducing the bubble diameters and air induced imperfections in the coating greater machine speed which tends to entrain more air induces greater shear at the bars which causes bubble size to be more greatly reduced application_number US 44312695 A description referring more particularly to fig1 5 wherein like numbers refer to similar parts an improved short dwell coater 20 is shown in fig1 and 5 the coater 20 has a coater head 22 which is disposed below a backing roll 24 such that a paper web 36 to be coated is engaged by the backing roll as it passes through the coater head 22 the coater head 22 has a housing 23 which defines a pond 28 which extends at least the width of the web 36 and which receives coating to be applied to the web a plurality of parallel turbulence generating bars 21 are mounted to the coating head 22 housing 23 and extend in a cross machine direction within the pond 28 the pond 28 is formed between a premetering blade 30 and a baffle plate 32 coating 34 is supplied from a pressurized coating source to the pond from an inlet 26 formed in the housing beneath the pond and counterflows from the.