CPC B41J 2/1606 (2013.01) [B41J 2/1433 (2013.01); B41J 2002/14475 (2013.01)] | 13 Claims |
1. A fluid ejection device comprising:
a nozzle plate including a non-coplanar surface including a hydrophilic region of hydrophilic material having a water contact angle from about 50° to about 90° and a hydrophobic coating including a hydrophobic material having a water contact angle from about 91° to about 160°,
wherein the hydrophilic region defines an opening of an ejection port and the hydrophobic coating is located outside of and around the opening and the hydrophilic region providing a recess around the opening on the nozzle plate of the fluid ejection device; and
wherein the hydrophilic region defines a floor surface of a channel on the nozzle plate and the hydrophobic coating defines a sidewall surface of the channel providing an ink puddle control structure on the nozzle plate of the fluid ejection device such that the hydrophilic region comprises a wider cross-section in an area further away from the ejection port and a relatively thinner cross-section in an area closer to the ejection port.
|