Abstract: One embodiment of a vent seal includes a vent that defines a vent channel and a seal positioned within the channel in both a closed vent condition and in an open vent condition.

Abstract: In one embodiment a closure for a supply container includes: a spout affixed to the container; a plug configured to plug the spout in a partially inserted position from which the plug may be easily removed from the spout and to plug the spout in a fully inserted position from which the plug may not be easily removed from the spout; an opening in the plug through which material in the container may flow when the plug is inserted into the spout; and a breachable seal sealing the opening.

Abstract: In one embodiment a pressure regulator for an ink pen includes: a diaphragm between a lower pressure region and a higher pressure region, the diaphragm movable toward the lower pressure region in response to an increase in a pressure difference across the diaphragm; a valve operative between an open position in which ink may flow into the lower pressure region and a closed position in which ink may not flow into the lower pressure region; a first lever rotatable on a first fulcrum in response to movement of the diaphragm toward the lower pressure region; and a second lever connected to the valve, the second lever rotatable on a second fulcrum in response to rotation of the first lever to move the valve from the closed position to an open position.

Abstract: In one embodiment an ink pen for an inkjet printer includes: an ink filter chamber; a pressure regulator chamber downstream from the ink filter chamber along a path of ink flow through the pen; a pressure regulator in the pressure regulator chamber; a filter in the ink filter chamber; an inlet to the ink filter chamber upstream from the filter along the ink flow path; and an outlet from the ink filter chamber to the pressure regulator chamber downstream from the filter along the ink flow path such that ink flowing from the inlet to the outlet passes through the filter. In another embodiment a method implemented in an ink delivery system for an inkjet ink pen includes: chambering ink in the pen; filtering the chambered ink; and then regulating the pressure of filtered ink.

Abstract: Various embodiments of a metallized print head container and method are disclosed.

Abstract: A check valve includes two opposing sheets surfaces that are coupled together to form a flow channel there between. The flow channel has a first end, a second end and at least one direction-changing portion in between the first and second ends. A first opening is provided at the first end of the flow channel and a second opening is provided at the second end of the flow channel.

Abstract: An inkjet pen is disclosed having an interior chamber containing a pressure regulator. A filter within the interior chamber substantially surrounds the pressure regulator, providing a large filter surface area, and hence a low resistance to ink flow. The filter may be formed of a pleated filter material; the filter material may be retained by a rigid ink passage flange and a filter cap.

Abstract: A printhead assembly includes a carrier having a fluid manifold defined therein, a plurality of printhead dies each mounted on the carrier and communicating with the fluid manifold, and a fluid delivery assembly coupled with the carrier and communicating with the fluid manifold.

Abstract: A printhead assembly includes a carrier having a fluid manifold defined therein, and a plurality of printhead dies each mounted on the carrier and including a first nozzle set and a second nozzle set. The fluid manifold includes a first chamber and a second chamber such that the first nozzle set of each of the printhead dies communicates with the first chamber of the fluid manifold and the second nozzle set of each of the printhead dies communicates with the second chamber of the fluid manifold.

Abstract: The present invention provides for a filter for an ink jet pen, comprising a filter material configured to attach to the pen, wherein a flow of ink through the filter material is substantially multidirectional. In a preferred aspect, an effective filtration surface area of the filter is substantially greater than any projection surface area of the filter. In another preferred aspect, the filter comprises a chamber at least partially bounded by the filter material, and a flow direction of ink into the chamber is substantially different than a flow direction of ink from the chamber.

Abstract: A printhead assembly includes a substrate having a first side and a second side opposite the first side, at least one electrical component mounted on the second side of the substrate, a substructure having a fluid manifold and at least one well isolated from the fluid manifold defined therein, and a plurality of printhead dies each mounted on the first side of the substrate. The substructure is disposed on the second side of the substrate such that the at least one electrical component is confined within the at least one well.

Abstract: A printhead assembly includes a carrier having a fluid manifold defined therein, a plurality of printhead dies each mounted on the carrier and communicating with the fluid manifold, and a fluid delivery assembly coupled with the carrier and communicating with the fluid manifold.

Abstract: A fluid ejection cartridge includes a fluid container that has both a fluid inlet and a fluid outlet. The fluid ejection cartridge has one or more fluid ejectors fluidically coupled to the fluid container outlet and a fluid valve fluidically coupled to the fluid container inlet. The fluid ejection cartridge has a filter assembly having a compliant portion with an internal volume fluidically coupled to the fluid container outlet such that the internal volume changes when fluid flows into the fluid container.

Abstract: An inkjet pen is disclosed having an interior chamber containing a pressure regulator. A filter within the interior chamber substantially surrounds the pressure regulator, providing a large filter surface area, and hence a low resistance to ink flow. The filter may be formed of a pleated filter material; the filter material may be retained by a rigid ink passage flange and a filter cap.

Abstract: A fluid ejection cartridge includes a fluid container that has both a fluid inlet and a fluid outlet. The fluid ejection cartridge has one or more fluid ejectors fluidically coupled to the fluid container outlet and a fluid valve fluidically coupled to the fluid container inlet. The fluid ejection cartridge has a filter assembly having a compliant portion with an internal volume fluidically coupled to the fluid container outlet such that the internal volume changes when fluid flows into the fluid container.

Abstract: The present invention provides for a filter for an ink jet pen, comprising a filter material configured to attach to the pen, wherein a flow of ink through the filter material is substantially multidirectional. In a preferred aspect, an effective filtration surface area of the filter is substantially greater than any projection surface area of the filter. In another preferred aspect, the filter comprises a chamber at least partially bounded by the filter material, and a flow direction of ink into the chamber is substantially different than a flow direction of ink from the chamber.

Abstract: A printhead assembly includes a carrier having a fluid manifold defined therein, and a plurality of printhead dies each mounted on the carrier and including a first nozzle set and a second nozzle set. The fluid manifold includes a first chamber and a second chamber such that the first nozzle set of each of the printhead dies communicates with the first chamber of the fluid manifold and the second nozzle set of each of the printhead dies communicates with the second chamber of the fluid manifold.

Abstract: A printhead assembly includes a substrate having a first side and a second side opposite the first side, at least one electrical component mounted on the second side of the substrate, a substructure having a fluid manifold and at least one well isolated from the fluid manifold defined therein, and a plurality of printhead dies each mounted on the first side of the substrate. The substructure is disposed on the second side of the substrate such that the at least one electrical component is confined within the at least one well.

Abstract: A fluid ejection assembly includes a carrier including a substrate and an electrical circuit with the substrate having a first side and a second side opposite the first side and the electrical circuit being disposed on the second side of the substrate, a fluid ejection device mounted on the first side of the substrate, and at least one electrical connector electrically coupled to the electrical circuit and the fluid ejection device, wherein the electrical circuit includes a printed circuit board such that the printed circuit board and the substrate both have at least one fluid passage extending therethrough with the at least one fluid passage communicating with the first side of the substrate and the fluid ejection device.

Abstract: An inkjet printing system includes an ink container adapted to hold a supply of liquid ink therein and a printhead communicating with the supply of liquid ink via a flow path. A pressure sensor measures a pressure of liquid ink disposed in the flow path and a volume detector detects a volume of liquid ink delivered through the flow path. In addition, a leak indicator communicates with the pressure sensor and the volume detector, and indicates an ink container leak based on the pressure of liquid ink disposed in the flow path and the volume of liquid ink delivered through the flow path.