Hewlett-packard Development Company, L.P.

Stephen Byrne

John Oliver

Aidan O'Reilly

Brendan Hall

Tommy O'Connor

Garry Rooney

Michael Dineen

Mark Walsh

Willie Sheehan

David Kelly

John Mulrennan

A print head assembly for an ink-jet printer operable with a continuous ink supply system is disclosed, with an ink compartment, a foam insert, an ink fill port, and a spacer. The ink fill port receives ink fed from an external supply and to be printed by the print head assembly. The ink compartment stores the ink to be printed. The foam insert is in the ink compartment and takes up the ink to be stored. The spacer extends into the ink compartment, provides for the formation of a clearance between the foam insert and the ink fill port and surrounds the ink fill port either completely or with one or more gaps having a gap width. The gap width of none of the gaps presents an aperture angle of more than 25% of 36&#xb0; with respect to a center of the ink fill port.

Ink-jet print head assemblies with a spacer surrounding an ink fill port and method of manufacturing

In one example a replaceable tri-color ink cartridge housing includes three chambers for different colors ink. In a further example, a headland may have three parallel ink slots having a length of at least 14.4 millimeters.

Tri-color ink cartridge housing

A replaceable tri-color ink cartridge, comprising three chambers for different colors ink; a headland having headland slots each fluidically connected to a respective chamber; and a printhead die attached to the headland, the die including (i) nozzle arrays having a length of at least 14.3 millimeters, and (ii) feed slots that fluidically connect the headland slots to the respective nozzle arrays, wherein each headland slot is longer than the corresponding feed slot.

Tri-color ink cartridge

Pen for a printer

Growing community of inventors

Leixlip, Ireland

Stephen Byrne