Patent ID: 7077907

Claim:
A coating head for use in a coating apparatus which applies a coating fluid to a surface of a flexible supporting member in a form of a belt traveling continuously, comprising: a slit facing the supporting member along a width direction of the supporting member, the coating fluid being ejected through an opening of said slit; a front edge surface provided on an upstream side of said slit in a direction of travel of the supporting member, said front edge surface facing the supporting member; a back edge surface provided on a downstream side of said slit in the direction of travel of the supporting member, said back edge surface facing the supporting member; a back edge back surface intersecting said back edge surface by forming a predetermined angle between the back edge back surface and said back edge surface, wherein a surface roughness Ra of said back edge back surface is 0.2 μm or less; and a recess formed in the back edge back surface, said recess extending along the width direction of the supporting member. wherein a distance between the position at which said back edge back surface intersects said back edge surface and said recess is 0.5 mm or greater.