Printhead assembly with a wicking element
View Patent ↗Provided is a printhead assembly having a support structure with a printhead mounted on the support structure, said printhead having an ink ejection face, and a print media guide proximate the support structure for guiding print media past the printhead for printing. The assembly also includes a wicking element mounted on the support structure between the support structure and the print media guide. An ink collector is arranged on the wicking element for receiving ink that has wicked through the wicking element to ensure that wicked ink is removed away from the printhead.
1. A printhead assembly comprising:
a printhead mounted on a support structure, said printhead having an ink ejection face;
a print media guide proximate the support structure for guiding print media past the printhead for printing;
a film mounted on the support structure, said film and part of said support structure defining a wicking channel therebetween to wick ink from the ink ejection face, wherein an edge portion of said film is clamped between the support structure and the print media guide; and
an ink collector arranged for receiving ink that has wicked through the wicking channel to ensure that wicked ink is removed from the printhead.
2. The printhead assembly of claim 1 , having a printhead maintenance station configured to facilitate the transfer of ink from the printhead to the wicking channel.
3. The printhead assembly of claim 2 , wherein the printhead maintenance station includes:
a body defining an elongate slot along a length thereof;
a pad mounted on a pad support inside said body and slidably engaged to said body to be slidable to a first position, where the pad protrudes from the body, and a second position, where the pad is inside the body, the pad having an angled contact surface for contacting the ink ejection face; and
an engagement mechanism to displace the pad between the first and second positions.
4. The printhead assembly of claim 3 , wherein the film is positioned adjacent a longitudinal edge of the printhead so that the wicking channel is able to wick ink away from a longitudinal edge portion of the contact surface and the ink ejection face.
5. The printhead assembly of claim 4 , wherein an edge portion of the contact surface extends past the longitudinal edge of the printhead, allowing ink to enter an inlet of the wicking channel adjacent the printhead.
6. The printhead assembly of claim 5 , wherein the pad and wicking channel are configured to move ink away from an opposite longitudinal edge portion of the printhead, said printhead having a wirebond encapsulant on such opposite edge which protects wirebonds connecting the printhead to other printer components.