Printhead assembly with a printhead maintenance station
View Patent ↗Provided is a printhead assembly that includes 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. Also included is a wicking element mounted on the support structure between the support structure and the print media guide, as well as a printhead maintenance station configured to facilitate the transferral of ink from the printhead to the wicking element.
1. A printhead assembly comprising:
a support structure;
a printhead mounted on the support structure, said printhead having an ink ejection face;
a stationary print media guide fixedly attached to the support structure for guiding print media past the printhead for printing;
a wicking element mounted on the support structure; and
a printhead maintenance station configured to facilitate the transfer of ink from the printhead to the wicking element,
wherein the wicking element is sandwiched between the support structure and the print media guide.
2. The printhead assembly of claim 1 , 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 with said housing to be slidable to a first position, where the pad protrudes from the slot, 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.
3. The printhead assembly of claim 2 , wherein the wicking element is positioned adjacent a longitudinal edge of the printhead so that the wicking element is able to wick ink away from a longitudinal edge portion of the contact surface and the ink ejection face.
4. The printhead assembly of claim 2 , wherein an edge portion of the contact surface extends past the longitudinal edge of the printhead, in use, allowing ink to contact with the wicking element adjacent the printhead.
5. The printhead assembly of claim 4 , wherein the pad and wicking element 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.
6. The printhead assembly of claim 1 , wherein the wicking element is formed from an absorbent material and is positioned in a cavity defined between the print media guide and the support structure on which the printhead and print media guide are mounted.
7. The printhead assembly of claim 1 , wherein the wicking element includes an ink collector for receiving ink that has wicked through the wicking element to ensure that wicked ink is removed from the printhead.