INK JET HEAD, INK JET CARTRIDGE, AND INK JET PRINTING DEVICE

摘要

PROBLEM TO BE SOLVED: To always keep stable ink discharge even if any discharging pattern is repeated to print an image by opening in an ink flow path and providing a space which absorbs pressure fluctuation in the ink flow path. SOLUTION: A grooved plate 34 is positioned and fixed to a heater board 32 provided with an electricity heat transducer 31. This device has partitions for respectively partitioning a plurality of ink flow paths 42, a common fluid chamber 33 temporalily contains an ink supplied to each ink flow path 42, a dead-end thin pipe space 101, an ink socket 35 for introducing an ink from an ink tunk 19 to the common fluid chamber 33 and a discharge opening 33 corresponding to each ink flow path 42. By providing the dead-end thin pipe space 101 to absorb and reduce pressure fluctuation in the common fluid chamber 33, the pressure can be dispersed and vibration of a meniscus of the orifis can be suppressed, whereby variation of the recording quality level can be avoided.