PRESSURE DAMPING APPARATUS, LIQUID JET HEAD AND LIQUID JET APPARATUS, AND PRESSURE DAMPING METHOD

摘要

Provided is a pressure damper, capable of reliably suppressing change in discharge amount of ink due to pressure fluctuation. The pressure damper includes: a recess portion (2a) for storing liquid; a flexible film (7) provided to cover an opening of the recess portion (2a); a pressure damping portion (8) including a liquid inflow port (1) and a liquid outflow port (3) which are communicated to the recess portion (2a); a pressure detecting portion (4) for detecting a pressure value of the liquid flowing out from the liquid outflow port (3); a control circuit portion (5) for outputting a drive signal based on the pressure value of the pressure detecting portion (4); and a pressure adjusting portion (6) for adjusting the flexible film (7) and pressure in the recess portion (2a) by deforming the flexible film (7) based on the drive signal output from the control circuit portion (5).