Coating machine having a timer for continuously forming a coating of uniform thickness on a substrate

摘要

PCT No. PCT/JP95/02741 Sec. 371 Date Aug. 28, 1996 Sec. 102(e) Date Aug. 28, 1996 PCT Filed Dec. 27, 1995 PCT Pub. No. WO96/20045 PCT Pub. Date Jul. 4, 1996A coating apparatus which comprises a feeding means to feed a coating liquid, a coating liquid applicator having a slot extending in one direction to discharge the coating liquid fed by the feeding means, and a conveying means to move at least either the coating liquid applicator or a substrate to be coated with the coating liquid relatively one to the other, comprising: (a) a first control means which comprises (a-1) a position detecting means to detect positions of the coating liquid applicator or the substrate which is moved by the conveying means, and (a-2) a controller capable of stopping the coating liquid applicator or the substrate which is moved by the conveying means at a position detected by the position detecting means such that a start-of-coating line of the substrate is in register with the slot of the coating liquid applicator and capable of starting the movement of the coating liquid applicator or the substrate which is stopped at the position; and (b) a second control means which comprises a timer controller capable of transmitting a signal to the controller of the first control means for the movement of the coating liquid applicator or the substrate which is stopped at the position after a desired period which begins with commencement of feeding the coating liquid and is needed for forming a coating liquid bead which is in contact with both the exit aperture of the slot of the coating liquid applicator and the substrate at the start-of-coating line.