Patent ID: 7695116
Filing Date: 2010-04-13
Classification: B41J

Abstract:
1. A liquid droplet discharging device comprising: a nozzle plate including a nozzle configured to discharge a liquid droplet; a liquid chamber corresponding to the nozzle; a liquid supplying path configured to supply liquid to the liquid chamber; an oscillating plate having a first portion racing the liquid chamber and a second portion facing the liquid supplying path; and a pressure generating unit configured to apply pressure to the liquid in the liquid chamber by causing the oscillating plate to be displaced, the pressure generating unit being fixed to a fixing base; wherein the pressure generating unit is longer than the liquid chamber in a longitudinal direction of the liquid chamber, wherein the liquid supplying path faces the oscillating plate, wherein the oscillating plate is formed of two layers including a thin layer, which is a diaphragm part, and a thick layer, which is an island-shaped protruding part, wherein the island-shape protruding part is configured on the thin layer, wherein the thin layer which faces the liquid supplying path, and the thick layer is configured on an opposite side of the thin layer, wherein the center of the pressure generating unit is out of line with the center of the island-shaped protruding part of the oscillating plate, and an edge of the pressure generating unit near the liquid supplying path is positioned not to face the second portion of the oscillating plate hut to face the first portion of the oscillating plate.