| 摘要 |
PURPOSE: An ink-jet printer head is provided to improve energy efficiency by effectively preventing a pressure loss of bubble by working fluid, make a response speed rapid and to discharge ink at a high speed. CONSTITUTION: An ink-jet printer head includes a substrate(10), a working fluid chamber(20a) provided on the substrate and having a membrane(30) at an upper portion and a heater at a lower portion, a working fluid inflow path(20b) connected to the working fluid chamber, an ink chamber(40a) provided on an upper portion of the membrane, an ink inflow path(40b) connected to the ink chamber, and a nozzle plate(50) having an orifice(50a) corresponding to the ink chamber. An effective volume of the working fluid chamber is larger than that of the ink chamber.
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