Hewlett-packard Development Company, L.P.

John Oliver

Mark Walsh

Aidan O'Reilly

Jefferson Patrick Ward

Ning Ge

Bryan Murphy

Iain Campbell-Brown

Amy Shipman

Stephen Byrne

Brendan Hall

Tommy O'Connor

Garry Rooney

Michael Dineen

Willie Sheehan

John Mulrennan

Chaw Sing Ho

Jon Rittgers

William Jon Rittgers

Ser Chia Koh

Ben Smith

David Kelly

Coilin Hegarty

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 printhead having an electrically-functional optical target. The printhead includes a substrate. An optical target having an optically-distinguishable shape and formed from at least one polysilicon strip is deposited on the substrate. An electrical connection to at least one of the polysilicon strips connect the strip into a circuit that is deposited on the substrate.

Electrically-functional optical target

Example circuits and methods are described involving a flexible substrate for a fluid cartridge, comprising an integrated circuit connected to the flexible substrate, and electrical connector pads arranged on the flexible substrate for connection to the integrated circuit.

Flexible substrate with integrated circuit

In one example, a flexible circuit for a fluid cartridge includes a single flexible substrate, an integrated circuit connected to the single flexible substrate, and an electrical connector pad array arranged in a constant pattern on the single flexible substrate for connection to a host controller. The electrical connector pad array includes first electrical connector pads connected to the integrated circuit and second electrical connector pads for connection to a fluid dispensing die.

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

In one example, a flexible circuit for a fluid cartridge includes a single flexible substrate, an electronic memory on the substrate, an authentication code stored on the memory, first electrical connector pads on the substrate connected to the memory, and second electrical connector pads on the substrate, not connected to the memory, to connect to a fluid dispensing die.

Pen for a printer

In one embodiment, a cartridge includes: a housing having a chamber therein for holding a fluid; a vent at a first part of the chamber; a porous fluid holding material in the chamber; an outlet from the chamber; and a hole extending through the fluid holding material from the first part of the chamber to a second part of the chamber at a location away from the outlet such that the second part of the chamber is vented through the hole but the outlet is not vented through the hole.

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Leixlip, Ireland

John Oliver