Patent ID: 8342668

Claim:
A liquid application apparatus comprising: an application member that has an application surface applying a liquid onto a medium; a holding member that abuts against the application surface of the application member so as to form a liquid holding space in which the liquid is held; a liquid application device that rotates the application surface of the application member in such a manner that the liquid supplied from the holding member to the application surface is applied onto the medium; a storage device that stores the liquid; a first flow channel and a second flow channel that connect the storage device to the holding member; a liquid movement device that supplies the liquid from the storage device to the holding member via the first flow channel and the second flow channel and recovers the liquid from the holding member to the storage device via the first flow channel and the second flow channel, the liquid movement device that causes oscillation of the liquid in the first flow channel, the second flow channel and a flow channel including the liquid holding space to generate a flow of the liquid; and a controller that controls the liquid movement device to generate the flow of the liquid caused by the oscillation in such a manner that a product which is generated from the liquid, has a higher viscosity than the liquid and adheres to interior walls of the first flow channel and the second flow channel, is dissolved in the liquid or collected in the liquid, wherein the controller controls the liquid movement device in such a manner that a phase difference is provided between a phase of the oscillation caused by the liquid movement device and a phase of the flow of the liquid in the first flow channel and the second flow channel.