Electrostatic coating apparatus and process
AssigneeSale Tilney Technology PLC
InventorKenneth R. Smythe
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Abstract
An electrostatic coating apparatus is described comprising an applicator, means for supplying liquid to the applicator at a controlled rate, means for establishing an electrostatic field between the applicator and a target substrate to be coated and control means providing an output signal to the liquid supply means for setting the rate at which liquid is supplied to the applicator, the said control means also providing an output signal to the field establishing means which, in operation, sets the magnitude of the applied field, the said output signals being such that the applied field is varied in accordance with any change in the rate of supply of liquid to the applicator.
Claims8
An electrostatic coating apparatus comprising an applicator, means for supplying liquid to the applicator at a controlled rate, means for establishing an electrosatic field between the applicator and a substrate to be coated and control means providing an output signal to the liquid supply means for setting the rate at which liquid is supplied to the applicator, the said control means also providing an output signal to the field establishing means which, in operation, sets the magnitude of the applied field, the said output signals being related to each other so that the applied field is varied automatically in accordance with any change in the rate of supply of liquid to the applicator.
A process of electrostatically coating a substrate with a liquid, which process comprises feeding liquid to an electrostatic applicator, establishing a field between the substrate and the applicator, adjusting the rate at which liquid is fed to the applicator and automatically adjusting the field according to the change in the rate at which liquid is supplied to the applicator.
Dependencies are inferred from the claim text.