Alignment layer printing device

The present invention relates to a liquid crystal panel manufacturing technology, and particularly relates to an oriented film printing apparatus for improving the quality of the alignment film coating. The present invention discloses an alignment film printing apparatus, comprising at least one printing unit, each printing unit comprising: a cylinder having a bottom opening, the top of the cylinder and having a suction opening; vacuum means communicating with the exhaust port; disposed in the cylinder in vivo, for the orientation of the liquid from the suction opening of the piston inside the cylinder; pumping port disposed at the degree of vacuum monitored over a piston cylinder vacuum tester; disposed in the cylinder, the piston into the cylinder monitoring from the top of the rangefinder; and evacuation means, respectively, and the range finder vacuum tester signal connection for controlling the orientation of the liquid suction amount of the vacuum cylinder tester and the measured value of range finder the control device.