Please download the dossier by clicking on the dossier button x
×

Inkjet printhead with nozzle chambers each holding two fluids

  • US 7,934,808 B2
  • Filed: 07/20/2009
  • Issued: 05/03/2011
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. An inkjet printhead comprising:

  • an array of droplet ejectors, each having a chamber with a nozzle; and

    ,an actuator for ejecting drops of ink through the nozzle;

    such that during use,each of the chambers hold ink and a gas, the gas remaining in the chamber during activation and deactivation of the actuator;

    wherein,the actuators each have a part with a hydrophilic coating for contacting ink in preference to other parts of the actuator such that the gas and the ink are in direct contact with each other at an interface within the chamber, and at least part of the actuator is positioned at the interface between the ink and the gas.

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