Coating device

Coating device for supplying a liquid to a substrate, comprising:

• a reservoir for holding a quantity of liquid, coating means which are able and configured to take liquid from the reservoir and transfer it to the substrate, and supply means for delivering the liquid into the reservoir during operation, wherein the supply means comprise controllable supply means which are able and configured to lead a constant liquid flow into the reservoir,
• wherein the reservoir is provided with level detecting means which are able and configured to detect a height of a liquid level in the reservoir,
• wherein provided between the level detecting means and the coating means is a control which continuously controls the coating means during operation on the basis of the detection of the liquid level in the reservoir by the level detecting means,
• wherein the coating means comprise a take-up roller having over a periphery thereof a take-up surface intended and configured to enter into contact with the liquid and take up a quantity thereof during operation,
• wherein the coating means comprise a supply roller having over a periphery thereof a supply surface which is able and configured to enter into contact with the substrate and supply a quantity of the liquid thereto during operation,
• wherein at least one of the take-up roller and the supply roller is in contact with a counter roller,
• wherein at least one actuator is provided between said counter roller and said at least one of the take-up roller and the supply-roller which, at least during operation, applies a contact pressure between said counter roller and said at least one of the take-up roller and the supply-roller, and
• wherein the control is operatively coupled to the at least one actuator in order to apply a mutual contact pressure between said counter roller and said at least one of the take-up roller and the supply-roller.