Coating device

A coating device comprising a coating liquid feed device, a coating liquid reservoir in an application nozzle, and a slit-shaped discharge port,

• which feeds a coating liquid from the coating liquid feed device into the coating liquid reservoir in the application nozzle via a coating liquid feed pipe;
• which locates the slit-shaped discharge port at a place above a coated object, the slit-shaped discharge port disposed at a distal end of the application nozzle for discharging the coating liquid from the coating liquid reservoir;
• and
• which applies the coating liquid in the coating liquid reservoir onto a surface of the coated object through the slit-shaped discharge port while effecting a relative movement between the coated object and the application nozzle, wherein
• the coating device further comprises a shutter member rotatable around an axis thereof defining an axial direction in the coating liquid reservoir and configured to open and close a space-between the coating liquid reservoir and the slit-shaped discharge port by rotation thereof,
• a gas feed regulation means as a pressure regulation means for regulating the pressure on the coating liquid in the coating liquid reservoir, the gas feed regulation means, with the coating liquid fed into the coating liquid reservoir, feeding a gas into the coating liquid reservoir to regulate the pressure on the coating liquid in the coating liquid reservoir to be at a given level,
• with the pressure on the coating liquid in the coating liquid reservoir maintained to be at the given level by the gas feed regulation means, the shutter member is rotated to open and close the space between the coating liquid reservoir and the slit-shaped discharge port,
• the shutter member includes a columnar body extending along the axial direction, and a guide notch formed on an outer periphery of the columnar body and having an axial length of the guide notch greater than a length of the slit-shaped discharge port measured in the axial direction, and
• the shutter member is configured to rotate to bring the guide notch to a position corresponding to the slit-shaped discharge port, thereby establishing communication between the coating liquid reservoir and the slit-shaped discharge port and allowing the coating liquid in the coating liquid reservoir to flow through the guide notch to the slit-shaped discharge port so that the coating liquid is applied onto the surface of the coated object.