Hewlett-packard Development Company, L.p.

Iain Campbell-Brown

Jefferson Patrick Ward

John Oliver

Eugene Cahill

Amy Shipman

Mark Walsh

Ivor Cummins

William Scott Osborne

Anoop Haridasan

Graeme Scott

William Jon Rittgers

Seamus O'Brien

Seamue O'Brien

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.

A structure comprises inlets through which respective liquids are to be introduced and multiple unique vent paths each corresponding to one of the inlets.

Structure for printhead having multiple air channels

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.

In one example, a structure for supporting a printhead includes: a substrate having a first side and a second side; an inlet tower through which liquid may be introduced into the structure; an opening through the substrate near the inlet tower; and an air channel along the substrate connecting the opening in the substrate to the atmosphere.

Vent through a printhead support structure

In one example, a structure for supporting a printhead includes: a substrate having a first side and a second side; multiple inlets each protruding from the first side of the substrate through which liquids may be introduced into the structure from the outlets of liquid containers that can be attached to the structure; multiple openings through the substrate from the first side to the second side, each opening positioned near one of the inlets at a location exposed to the outlet of a corresponding one of the containers when the container is attached to the structure; and an air channel on the second side of the substrate connecting each of one or more of the openings to another opening.

Vent path for a liquid container

A light beam is used to cut a slot in a first side of substrate. An optical sensor monitors a surface of a second side of the substrate that is opposite the first side while cutting the slot. If the light beam breaks through the surface of the second side, the sensor detects the light beam.

Growing community of inventors

Naas, Ireland

Iain Campbell-Brown