×

Inkjet printhead nozzle with ribbed wall actuator

  • US 6,886,917 B2
  • Filed: 08/08/2003
  • Issued: 05/03/2005
  • Est. Priority Date: 06/09/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. An ink jet printhead nozzle arrangement comprising:

  • a wafer substrate an ink chamber formed therein;

    an ink ejection port formed by a substantially centrally located rim on a wall of said chamber;

    at least one flexible portion located on said wall; and

    rib elements located on the outer surface of said wall whereby the wall is adapted to move independently of said rim such that upon actuation the at least one flexible portion displaces and interacting with the rib elements moves said wall into said ink chamber forcing ink therein, out through the said ink ejection port;

    wherein the wall is configured to bend into the ink chamber away from the centre of the ink chamber; and

    wherein the said at least one flexible portion of said wall is made from material having a thermal expansion suitable to cause the wall to move into said ink chamber upon uneven heating of the at least one flexible portion of the wall.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×