Method for reducing erosion due to cavitation in ink jet printers.

摘要

A novel structure which reduces stress due to cavitation in a thermal ink jet head is disclosed. A jetting resistor (30) is formed on a thin membrane (70) and suspended in contact with an acoustic absorber (90) such as silicone oil on its back surface. The pressure wave created by the collapsing bubble which occurs in the ink on the membrane front surface each time the resistor is fired is thus absorbed by the silicon oil. The failure rate of such a jetting resistor is thus substantially reduced.