Pressure damper, liquid jet head, liquid jet apparatus, and pressure damping method

摘要

A pressure damper includes a recess portion for storing liquid, and a flexible film that covers an opening of the recess portion. A liquid inflow port and a liquid outflow port communicate with the recess portion. A pressure detecting portion detects a pressure value of the liquid flowing out from the liquid outflow port, and a control circuit portion outputs a drive signal based on the pressure value of the pressure detecting portion. A pressure adjusting portion adjusts the pressure in the recess portion by forcibly deforming the flexible film based on the drive signal output from the control circuit portion. The pressure damper reliably suppresses change in the discharge amount of ink due to pressure fluctuation.