Patent ID: 6436190
Filing Date: 2002-08-20
Classification: B05C

Abstract:
A coating apparatus, comprising:a coating head having a feeding port through which a coating solution is supplied; a manifold in which the coating solution supplied through the feeding port is stored; and a slit communicating with the manifold; wherein the coating head discharges the coating solution in a discharging direction through the slit to a support and is designed such that the slit has a length M (mm) along the discharging direction and a gap G (mm), and the manifold has a coating width L (mm) orthogonal to the discharging direction, a cross sectional area S (mm2) and a circumferential length R (mm) of a cross section, and supplying means for supplying the coating solution to the feeding port of the coating head; and wherein the coating head and the supplying means are arranged such that the coating solution is supplied symmetrically in terms of the center of the coating width of the manifold through the feeding port into the manifold, and dimensions of the coating head are determined to satisfy formula (1): 10âˆ’4L2R2G3)/(24MS3)<10âˆ’2â€ƒâ€ƒ(1).