Abstract: A liquid agent application apparatus includes an application nozzle that is movable up and down and in a horizontal plane direction with respect to a board, an application valve that switch between a first state in which supply of a liquid agent to the application nozzle is performed and a second state in which the supply of the liquid agent to the application nozzle is stopped, and a control device that controls these. The control device performs control such that the application nozzle is lowered, the application valve is switched to the second state by standing by a predetermined time after switching the application valve to the first state at a predetermined supply start timing, and the application nozzle is raised after a timing at which a tip end of the application nozzle reaches a lowering end and the application valve is switched to the second state.

Abstract: Component mounting machine includes head, a device for moving head, transfer unit, and a mounting controller. Circular plate is an example of a container in which paste is placed. The bottom face of circular plate and the upper surface of the side wall have a predetermined height relationship. Height sensor is disposed on the lower face of head. Height sensor measures the height of the upper surface of the side wall of circular plate, which is a measurement point. The mounting controller recognizes the height of the bottom face of circular plate or the height of the surface of coating film disposed on circular plate from the height of the top surface of the side wall of circular plate measured by height sensor.

Abstract: Component mounting machine includes head, a device for moving head, transfer unit, and a mounting controller. Circular plate is an example of a container in which paste is placed. The bottom face of circular plate and the upper surface of the side wall have a predetermined height relationship. Height sensor is disposed on the lower face of head. Height sensor measures the height of the upper surface of the side wall of circular plate, which is a measurement point. The mounting controller recognizes the height of the bottom face of circular plate or the height of the surface of coating film disposed on circular plate from the height of the top surface of the side wall of circular plate measured by height sensor.