Hewlett-packard Development Company, L.p.

Hewlett-packard Development, L.p.

Cary R Bybee

Anthony Donald Studer

Kevin D Almen

David J Benson

David M Hagen

Paul L Nash

Bob Wickwire

Rebecca M Seitz

A flexible barrier film, including a polyester layer, and a vapor barrier film having a base layer and an inorganic layer disposed on the base layer, and a heat sealable layer having polyethylene. In addition, the flexible barrier film includes a first adhesive layer having a polyurethane component, interposed between the polyester layer and the vapor barrier film, and further includes a second adhesive layer having a polyurethane component that is interposed between the vapor barrier film and the heat sealable film forming the flexible barrier film.

Flexible barrier film structure

A replaceable ink supply comprises an ink container with an internal chamber formed from a plurality of walls. An ink reservoir block can be located within the internal chamber. Further, a channel can be formed in at least one wall of the internal chamber and the channel having an open side exposing a portion of the ink reservoir block.

Replaceable ink supply with ink channels

A fluid containment structure includes a containment vessel having an interior fluid chamber for fluid containment. A flexible bag is disposed within the containment vessel; the bag is vented to the external atmosphere outside the containment vessel. A spring is coupled to the bag to hold the bag in a coiled state until a back-pressure within the fluid chamber exerts sufficient force to commence uncoiling the bag against the spring pressure, allowing air from the external atmosphere to enter the bag and enlarge an interior bag space which is sealed from the interior fluid chamber.

Fluid containment structure with coiled bag backpressure regulator

A fluid supply including a body and a reversibly fluid absorbing material having a first surface energy and disposed in the body. In addition, the fluid supply has at least one fiber having a fiber surface energy where the fiber is disposed within the fluid absorbing material, and the fiber surface energy is less than the first surface energy of the fluid absorbing material.

Fluid supply having a fluid absorbing material

An ink delivery apparatus includes a pressure tuned rolling piston having a distal end. The distal end includes a pressure responsive portion. A first convolute portion supports the pressure responsive portion, and the first convolute portion is configured to provide a first level of resistance against a negative pressure.

Ink delivery apparatus with pressure tuned rolling piston and method of use

An ink delivery apparatus includes a chamber configured to contain ink, where that chamber includes a proximal end for connection to the ink delivery apparatus, and opposing side portions having at least one tapered section configured to support the chamber and to facilitate at least partial controlled collapse of the chamber in response to a negative pressure.

Ink delivery apparatus with collapsible ink chamber and method of use

An ink delivery regulation apparatus includes a support configured to be positioned within an ink chamber and a resilient deflection member coupled to the support. The resilient deflection member is configured to resiliently deflect from a generally concave shape to a generally convex shape in response to a change in said negative pressure.

Ink delivery regulation apparatus and method of use

A fluid containment structure includes a containment vessel having an interior vessel space for fluid containment, and a fluid outlet communicating with the interior vessel space. A flexible bag with opposed side surfaces is disposed within the containment vessel, vented to an external atmosphere outside the containment vessel. A sacrificial bond structure is formed between the side surfaces, and restrains the side surfaces together until a back-pressure within the vessel space exerts sufficient force to break the sacrificial bond structure, allowing air from the external atmosphere to enter the bag and enlarge an interior bag space.

Back-pressure generating fluid containment structure and method

Ink reservoirs and methods are provided. One ink reservoir has at least one compartment and first and second vents that communicatively couple the compartment to an atmosphere surrounding an exterior of the ink reservoir.

Ink-reservoir vents and venting methods

A high efficiency, liquid supply vessel is provided. The liquid supply vessel includes a chamber, either an open-foam or septum-based fluidic interconnect, a tower, and at least one gas-permeable vent. The tower includes a valve which remains closed when the vessel is inserted into a printer and the fluidic interconnect is engaged, thereby retaining the liquid in the vessel. When the printhead is operated, a sufficient vacuum is created to open the valve, thereby supplying the liquid to the printhead. Whereas the vacuum pressure may otherwise rise to unacceptable levels, the gas-permeable vent enables the pressure to be equalized. Similarly, the vent equalizes pressure during altitude and/or temperature changes, thereby preventing pressure increases or decreases which would otherwise be associated with such changes.

Liquid supply vessel

A fluid supply providing fluid to a fluid ejection cartridge, includes a chassis that partially defines a variable volume chamber. The chassis has a sealing surface disposed proximate an opening in the chamber. In addition, the fluid supply includes a compressive layer formed from an ethylene propylene-diene copolymer and an isobutylene isoprene copolymer. Further the fluid supply includes a fastening device disposed on the chassis holding the compressive layer to the sealing surface forming a fluidic seal of a diaphragm pump.

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Lebanon, OR, United States of America

Cary R Bybee