Patent ID: 7370922
Filing Date: 2008-05-13
Classification: B41J

Abstract:
1. An ink jet recording apparatus, comprising: a recording head including a nozzle hole that discharges ink, an ink chamber that is linked to the nozzle hole, an actuator for changing the volume in the ink chamber, a manifold for supplying ink to the ink chamber, and a restrictor part provided between the ink chamber and the manifold; a negative pressure applying unit for generating a meniscus in said nozzle hole through a balance with a negative pressure applied to said ink chamber via said restrictor part; a pressurizing unit for pressurizing and supplying ink to said ink chamber; and a controller capable of: drive-controlling said actuator to withdraw said meniscus until the balance with said negative pressure is broken through the change of the volume in the ink chamber in response to the driving of said actuator; and after said negative pressure applying unit withdraws said ink in said ink chamber to said restrictor part, controlling said pressurizing unit to supply said ink to said ink chamber and again generate said meniscus, wherein said actuator is driven to discharge said ink in said ink chamber from said nozzle hole.