Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Jeremy A Davis

David J Waller

Kit L Harper

Daniel D Dowell

Louis C Barinaga

Melissa S Gedraitis

Ralph L Stathem

Mark A Smith

Charles R Steinmetz

Kris M English

Jeffrey D Langford

Marc A Baldwin

Ashley E Childs

Jeffrey K Pew

Michael Lee Hilton

Kevin David Koller

Cal K Stone

Louis c/o Hp Company Barinaga

An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The on-axis printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the on-axis printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube.

Ink delivery system and methods for improved printing

An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube.

A pump having a rotary portion which compels the movement of a fluid by peristaltic compression of resilient tubing containing the fluid includes a tube component having a plurality of adjacent resilient tubes, with a web interconnecting the adjacent resilient tubes. The web may be offset from the centerline of the tubes so as not to degrade the compressibility of the tubes.

Peristaltic pump with ganged tubes

An occlusion for use in a peristaltic pump includes independently movable occlusion fingers. The fingers are integrally formed as a single unitary body.

Peristaltic pump

A pen having a printhead and a chamber for holding ink; a sensor for monitoring changes in the amount of ink in the chamber; and a pump for selectively drawing ink into or expelling ink from the chamber.

Pen maintenance system and method for operating same

A peristaltic pump device and method includes at least one roller of a rotor rotatable with respect to an occlusion with a substantially constant radius. A depression is formed in the occlusion and extends beyond the substantially constant radius of the occlusion.

Peristaltic pump and method with parking position

A system for receiving and recycling ink comprises a print cartridge having a printhead, and an ink supply reservoir fluidly connected to the print cartridge and a seal member coupled to the ink supply reservoir. The seal member defines a fluid path into the reservoir and the print cartridge engages the seal member so that ink spit from the printhead flows through the fluid path into the reservoir.

Printhead maintenance system

A ganged inkjet printhead sealing system maintains inkjet printhead health in an inkjet printing mechanism during periods of printing inactivity. In multi-printhead printing mechanisms, separate caps seal against each of the printheads. The caps each have an outlet vent. The vents are all ganged together and fluidically coupled to a single, common pressure regulation chamber that isolates the environment adjacent the printhead nozzles from the external environment when the printheads are capped. A fluid in a U-shaped manometer tube, or an elastomeric bladder are used to isolate the pressure chamber environment. The bladder may be constructed as a thin-walled sheet, a spring-biased bag, or as a bellows. The pressure chamber volume changes to accommodate pressure spikes during the capping process, as well as environmental changes in temperature, elevation, barometric pressure, etc. An inkjet printing mechanism having such a ganged capping system, along with associated capping methods are also provided.

Ganged inkjet printhead capping system

A pen having a printhead and a chamber for holding ink; a sensor for monitoring changes in the amount of ink in the chamber; and a pump for seletively drawing ink into or expelling ink from the chamber.

A positive stop capping system is provided for sealing an inkjet printhead in an inkjet printing mechanism during periods of printing inactivity. A positive stop or brace is provided in a cavity defined under a cap cover skin, with the skin also forming a sealing lip which surrounds ink-ejecting nozzles of the printhead when sealed. The flexible skin supporting the lip deflects into the cavity toward the brace when the cap is moved into a sealing position, in some cases contacting the brace, and in other cases, compressing the brace. An inkjet printing mechanism having the positive stop capping system and method of capping using this system are also provided.

Positive stop capping system for inkjet printheads

A bellows capping system is provided for sealing ink-ejecting nozzles of an inkjet printhead in an inkjet printing mechanism, such as a printer, during periods of printing inactivity. The system includes a support which moves between a sealing position and a rest position. The system also has a cap which extends from the support and terminates in a lip. The lip surrounds the nozzles when the support is in the sealing position. The cap has a wall with first and second leg portions joined together at a knee portion between the support and the lip. When sealing the printhead, the knee bends or buckles so the first and second portions collapse toward each other. Multiple knee portions may join together multiple wall portions in a bellows or accordion arrangement. An inkjet printing mechanism having the bellows capping system and method of using this capping system are also provided.

Bellows capping system for inkjet printheads

The present invention includes as one embodiment a capping station for a fluid ejection device having a snout feature, the capping station comprising a cap with a rigid body and a gland seal disposed around an inner perimeter of a cavity defined by the rigid body for resiliently receiving side portions of the snout feature of the fluid ejection device to create a seal with the fluid ejection device.

Growing community of inventors

Battle Ground, WA, United States of America

Jeremy A Davis