Preston D Seu

US Patent:

6414701, Jul 2, 2002

Filed:

Aug 9, 1999

Appl. No.:

09/370722

Inventors:

Preston Dow Seu - Vancouver WA
David J. Lowe - Vancouver WA
Clement C. Lo - Lake Oswego OR

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 201

US Classification:

346136

Abstract:

A printing media cartridge for a drum-type hard copy apparatus has printing media supply within the drum. Printable sheet lengths of printing medium are extracted from the interior of the drum through a slot such that individual prints can be produced using the drum outer surface as a platen. Removing a print from the platen extracts the next sheet length from within the drum which is then automatically wrapped back onto the drums outer surface and aligned for the next print cycle. Printer control encoding is provided with the cartridge.

US Patent:

6493937, Dec 17, 2002

Filed:

Mar 16, 1998

Appl. No.:

09/039604

Inventors:

James P Axtell - Portland OR
Trudy L Benjamin - Portland OR
David J Lowe - Vancouver WA
Preston D. Seu - Vancouver WA
Blair M. Kent - Vancouver WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B21D 5376

US Classification:

298901, 347108, 347 49

Abstract:

A manufacturing method provides ink-jet writing engine modules for use with a compatible hard copy engine module, a hard copy apparatus based thereon, and methods of manufacturing, operation, and use. Fluidic and electronic partitioning for ink-jet hard copy apparatus is redefined. Modular separation of a hard copy engine from a writing engine allows a replaceable writing module containing all of the key elements of the ink-jet writing system based on writing system technology requirements, particularly for those most likely to age or fail as a result of time, frequency of use, or end-user actions. The writing engine subsystem includes: one or more printing modules having print head elements with concomitant ink manifold components and ink flow and pressure regulation mechanisms; one or more ink containersâeither permanent, refillable, or replaceable; one or more ink formulations; one or more ink delivery means, such as tubes and valves fluidically coupling the ink containers to the ink manifolds; service station components; and a framework to retain the elements in a unitary module, insertable cassette-like manner.

US Patent:

6851800, Feb 8, 2005

Filed:

Jul 29, 2003

Appl. No.:

10/629204

Inventors:

Preston Seu - Vancouver WA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B41J002/175

US Classification:

347 86, 347 87

Abstract:

A single-piece print cartridge body is provided. The print cartridge has a plurality of outlet ports disposed along a single axis that is substantially perpendicular to a direction of motion of the print cartridge body during printing. First and second compartments are respectively communicatively coupled to first and second cavities. The first and second cavities are substantially parallel to the single axis and are located on opposite sides of the single axis. A first channel interconnects the first cavity and a first one of the plurality of outlet ports. A second channel interconnects the second cavity and a second one of the plurality of outlet ports. The first and second channels are substantially perpendicular to the single axis.

US Patent:

7284844, Oct 23, 2007

Filed:

Jul 30, 2004

Appl. No.:

10/909215

Inventors:

Preston D. Seu - Vancouver WA, US

Assignee:

Hewlett-Packard Development Comapny, L.P. - Houston TX

International Classification:

B41J 2/175

US Classification:

347 85

Abstract:

An air-driven delivery assembly for delivering marking material to a print head includes a supply reservoir configured to contain a quantity of marking material, a containment chamber coupled to the supply reservoir, and a low pressure source coupled to the containment chamber wherein activation of the low pressure source draws marking material from the supply reservoir into the containment chamber.

US Patent:

7959874, Jun 14, 2011

Filed:

Apr 20, 2007

Appl. No.:

11/738427

Inventors:

Blair M. Kent - Camas WA, US
Manish Giri - Corvallis OR, US
Preston Seu - Vancouver WA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B01L 3/00

US Classification:

422501

Abstract:

A fluid-ejection device includes a handheld and/or mountable enclosure, a removable tip, a cap, a pneumatic fitting, and a controller. The removable tip has a fluid-ejection mechanism located at an end thereof. The cap is disposed on the end of the removable tip such that just the fluid-ejection mechanism is exposed through the cap. The pneumatic fitting extends from the enclosure and is receptive to placement of the removable tip thereon. The controller is situated within the enclosure to cause the removable tip to eject fluid.

US Patent:

20090295848, Dec 3, 2009

Filed:

Jul 12, 2009

Appl. No.:

12/501451

Inventors:

Blair Kent - Camas WA, US
James P. Axtell - Portland OR, US
Trudy Benjamin - Portland WA, US
David J. Lowe - Vancouver WA, US
Preston D. Seu - Vancouver WA, US

International Classification:

B41J 29/38

US Classification:

347 6, 347 9

Abstract:

A tip to be placed on a fluid-ejection device is filled with fluid. The fluid may be introduced into a substantially hollow body of the tip at a first end of the body. The body of the tip has a second end at which a fluid-ejection mechanism is disposed to eject the fluid as controlled by the fluid-ejection device. The fluid may be introduced into the substantially hollow body of the tip through of the fluid-ejection mechanism disposed at the second end of the body of the tip. The tip may further be identified and/or serviced, and the tip and/or the fluid-ejection device may further be validated.

US Patent:

62609610, Jul 17, 2001

Filed:

Mar 2, 2000

Appl. No.:

9/516922

Inventors:

Preston Seu - Vancouver WA
Patrick Boyd - Albany OR
Gary Powell - Albany OR

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 87

Abstract:

A multi-compartment ink-jet cartridge body structure, including a unitary body having a plurality of ink reservoir compartments. Each compartment includes an outlet port through which ink passes to feed ink to an ink-jet printhead nozzle array. The body further includes a printhead nozzle array mounting region, and an ink manifold structure including a plurality of corresponding ink channels each leading from a corresponding outlet port to a feed opening formed at the printhead mounting region. The body and manifold structure are formed as a unitary one-piece structure. A lid is attached to the unitary body to cover the compartments. The body includes an external wall, and an access opening is formed in the wall adjacent the manifold structure. A seal structure attached to the body for sealing the access opening. The body structure can be fabricated by a plastic material using an injection molding process.

US Patent:

62643223, Jul 24, 2001

Filed:

May 10, 2000

Appl. No.:

9/568277

Inventors:

James P Axtell - Portland OR
Trudy L Benjamin - Portland OR
David J Lowe - Vancouver WA
Preston D. Seu - Vancouver WA
Blair M. Kent - Vancouver WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 21175

US Classification:

347108

Abstract:

The present invention provides ink-jet writing engine modules for use with a compatible hard copy engine module, a hard copy apparatus based thereon, and methods of manufacturing, operation, and use. Fluidic and electronic partitioning for ink-jet hard copy apparatus is redefined. Modular separation of a hard copy engine from a writing engine allows a replaceable writing module containing all of the key elements of the ink-jet writing system based on writing system technology requirements, particularly for those most likely to age or fail as a result of time, frequency of use, or end-user actions. The writing engine subsystem includes: one or more printing modules having print head elements with concomitant ink manifold components and ink flow and pressure regulation mechanisms; one or more ink containers--either permanent, refillable, or replaceable; one or more ink formulations; one or more ink delivery means, such as tubes and valves fluidically coupling the ink containers to the ink manifolds; service station components; and a framework to retain the elements in a unitary module, insertable cassette-like manner. The present invention further provides a hard copy engine compatible with such a writing engine. The hard copy engine does not contain any components requiring direct contact with ink.