PRESSURE BUFFER, LIQUID JETTING HEAD, LIQUID JETTING RECORDING DEVICE, AND METHOD FOR BUFFERING PRESSURE

摘要

Provided is a pressure damper, a liquid jet head, and a liquid jet recording apparatus capable of detecting and regulating the pressure of liquid with high accuracy, irrespectively of the kind of the liquid. The pressure damper includes: a main body portion (91) having a concave portion (91 a) for storing liquid and a conduit (93, 94) open to the concave portion (91 a) formed therein; a thin film (96) which is disposed so as to hermetically seal the concave portion (91 a) and which is fixed to the main body portion (91) at a peripheral portion (91 c) of the concave portion (91 a); a reference member (97) which is freely brought into/out of contact with the thin film (96) and which is disposed in the concave portion (91 a); and displacement amount detecting means having a loop coil portion (99) for detecting change in relative position of the reference member (97) with pressure fluctuations of the liquid stored in the concave portion (91 a) without contacting the reference member (97).