Hewlett-packard Development Company, L.P.

Memjet Technology Limited

Darren Hackett

Misty Bagnat

Patrick Lynch

Brian Kevin Donohoe

Owen Byrne

Rónán O'Reilly

Kimberly G Reid

Alexandra Barczuk

Declan O'Keeffe

Michael Shnider

Declan O'KEEFFE

A thermal bend actuator includes: a thermoelastic beam for connection to drive circuitry; and a passive beam mechanically cooperating with the thermoelastic beam, such that when a current is passed through the thermoelastic beam, the thermoelastic beam expands relative to the passive beam resulting in bending of the actuator. The thermoelastic beam wherein the thermoelastic beam is comprised of an aluminium alloy. The aluminium alloy comprises a first metal which is aluminium, a second metal, and at least 0.1 at. % of a third metal selected from the group consisting of: copper, scandium, tungsten, molybdenum, chromium, titanium, silicon and magnesium.

Thermal bend actuator having improved lifetime

A print cartridge comprises an ink housinghaving at least one interior compartmentwith a print head mounted at the base of the housing in fluid communication with the compartment via a passagewayhaving an entrance above the bottom of the compartment. A compressed foam blocksubstantially fills the compartment above the passageway entrance so as to leave a free space laterally adjacent to the passageway. A ribextends upwardly along one wall of the compartment from the free space partially to the top of the foam block, the foam block not conforming fully to the cross-section of the rib to leave an air vent channel along at least one side of the rib.

Print cartridge

Growing community of inventors

Dublin, Ireland

Darren Hackett