Max S Gunther

Author:

Max Gunther

ISBN #:

0025465805

Author:

Max Gunther

ISBN #:

0451158393

Author:

Max Gunther

ISBN #:

0452256593

Author:

Max Gunther

ISBN #:

0452262399

Author:

Max Gunther

ISBN #:

0809250438

Author:

Max Gunther

ISBN #:

0809251809

Author:

Max Gunther

ISBN #:

0812830547

Author:

Max Gunther

ISBN #:

0812862678

US Patent:

6698870, Mar 2, 2004

Filed:

Jul 25, 2002

Appl. No.:

10/206554

Inventors:

Max S Gunther - La Jolla CA

Assignee:

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

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

A ball check valve for use in a bulk ink supply system of an inkjet printing system, for disposal in an ink flow path between an ink reservoir and a printhead, so as to control back pressure at the printhead thereby reducing the occurrence of de-priming of the printhead, including a valve body defining a chamber with an inlet and an outlet; a ball disposed in the chamber, the ball having a diameter; a ball retainer disposed in the inlet, the ball retainer having an aperture with a diameter which is less than the diameter of the ball, wherein backflow of ink in the chamber causes the ball to seat against the ball retainer, placing the ball check valve in a closed position such that ink flow through the aperture is restricted.

US Patent:

6705702, Mar 16, 2004

Filed:

Oct 30, 2001

Appl. No.:

10/016319

Inventors:

Max S Gunther - La Jolla CA
George M. Sarkisian - San Diego CA
Yinan Xu - San Diego CA

Assignee:

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

International Classification:

B41J 2205

US Classification:

347 43, 347 15, 347100

Abstract:

An inkjet printing system and method for printing using both pigmented inks and dye-based inks. A supply of pigmented ink of a certain color is provided, along with another supply of dye-based ink of the same color. A pigmented nozzle array controllably deposits drops of the pigmented ink of the certain color, while a dye-based nozzle array controllably deposits drops of the dye-based ink of the same color. A region of a media is printed with the color by depositing, as governed by a controller, drops from the pigmented supply and drops from the dye-based supply on different subregions of the region.

US Patent:

6736495, May 18, 2004

Filed:

Mar 10, 2003

Appl. No.:

10/386806

Inventors:

Paul S. Wu - Encinitas CA
Erich E. Coiner - Poway CA
Mark E. Young - Santa Rosa CA
Max Stephen Gunther - La Jolla CA
David S. Hunt - San Diego CA

Assignee:

Hewlett-Packard Development Company, LP. - Houston TX

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

Techniques for liquid replenishment in a printer/plotter. An ink delivery system (IDS) is employed wherein the on-carriage spring reservoir of the print cartridge is manually and securely connected to the off-carriage reservoir. A pen cartridge that uses an internal spring to provide vacuum pressure is connected from an inlet port through a unitary coupler to an ink reservoir located off the scanning carriage axis. The coupler serves to align as well as to secure two mating valves to securely hold them together in an open latched position which is not intended to be modified or disconnected until the entire ink supply has been depleted. A replaceable ink supply module for providing replenishment of an inkjet printhead includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation. The collapsible bag is placed inside the protective enclosure box and has an end-connect outlet permanently attached to one end of the connective tube.

US Patent:

7168798, Jan 30, 2007

Filed:

Apr 26, 2004

Appl. No.:

10/832069

Inventors:

Mohammad M Samii - La Jolla CA, US
Daniel L Briley - Escondido CA, US
Victor T. Escobedo - Bonita CA, US
Max S Gunther - Ridgecrest CA, US

Assignee:

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

International Classification:

B41J 2/17
B41J 2/175

US Classification:

347 86, 347 84, 347 85

Abstract:

Embodiments of the present invention include hybrid ink delivery systems which allow a flexible arrangement of free ink supplies to be connected to multiple printhead assemblies, while preventing printhead deprime or drooling during setup, and provide control and verification of ink supply replacement through the use of integral memory components on the in supplies.

US Patent:

61132292, Sep 5, 2000

Filed:

Mar 4, 1998

Appl. No.:

9/034721

Inventors:

Max Stephen Gunther - La Jolla CA
Ignacio De Olazabal - Barcelona, ES

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

An inkjet printing system provides an on/off valve adapted for periodic engagement with an inlet port on a print cartridge mounted in a carriage. The valve is connected to an ink supply which is located off the carriage. A manually actuated set of individual locking gates allows each valve to be separately mounted on a holder capable of carrying multiple valves. As the ink reservoir in the print cartridge is slowly depleted during operation of the printing system, a mechanism periodically moves the valves from a first passive position separated from the print cartridges to a second active position engaged with the inlet port of the print cartridges in order to allow replenishment without removing the print cartridges from the carriage.

US Patent:

61061093, Aug 22, 2000

Filed:

Mar 3, 1997

Appl. No.:

8/805861

Inventors:

Ignacio Olazabal - Sant Cugat del Valles, ES
Robert Giles - Sant Cugat del Valles, ES
Mark E. Young - Santa Rosa CA
Elizabeth Zapata - Barcelona, ES
Felix Ruiz - Sant Cugat del Valles, ES
Max S. Gunther - La Jolla CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

An inkjet printing system provides an automated mechanism for the connection/disconnection of an ink supply valve to inkjet printheads without having to remove the printheads from a carriage. The automated mechanism includes a bracket for holding a plurality of ink supply valves in a passive first position displaced from a corresponding number of inlet ports on inkjet printheads mounted in the carriage which moves back and forth across a print zone. During normal printing operations there is no connection between the ink supply valves and the inkjet printheads. When it becomes necessary to replenish ink in the printheads from a supplemental ink container connected to the ink supply valve, the carriage comes to a rest position away from the print zone, and a motor causes the bracket to move toward the carriage so that an ink supply valve can directly engage an inlet port on the inkjet printhead. In an exemplary embodiment, an ink cartridge having a reservoir capacity of about 40 cc. can receive about 15 cc.

US Patent:

62398229, May 29, 2001

Filed:

Mar 31, 2000

Appl. No.:

9/539559

Inventors:

Elizabeth Zapata - Barcelona, ES
Mark E. Young - Santa Rosa CA
Robert Giles - Sant Cugat del Valles, ES
Felix Ruiz - Sant Cugat del Valles, ES
Rosa Calatayud - Sant Cugat del Valles, ES
Ronald D. Stephens - Escondido CA
Erich Coiner - Poway CA
Max S. Gunther - La Jolla CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

A replaceable ink supply module which provides replenishment of an inkjet printhead includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation. The collapsible bag is placed inside of the protective enclosure box and has an end-connect outlet permanently attached to one end of the connective tube. The other end of the connective tube carries a permanently attached on/off valve designed for periodic engagement with an inlet valve of an inkjet printhead.

US Patent:

59298839, Jul 27, 1999

Filed:

Mar 3, 1997

Appl. No.:

8/810840

Inventors:

Max S. Gunther - La Jolla CA
Ignacio Olazabal - Sant Cugat del Valles, ES
Mark E. Young - Santa Rosa CA
Elizabeth Zapata - Barcelona, ES
Joseph E. Scheffelin - Poway CA
David S. Hunt - San Diego CA
Alfred U. Zepeda - San Marcos CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

An inkjet printing system provides an on/off valve adapted for periodic engagement with an inlet port on a print cartridge mounted in a carriage. The valve is connected to an ink supply which is located off the carriage. As the ink reservoir in the print cartridge is slowly depleted during operation of the printing system, a mechanism periodically moves the valve from a first passive position separated from the print cartridge to a second active position engaged with the inlet port of the print cartridge in order to allow replenishment of the ink reservoir in the print cartridge without removing the print cartridge from the carriage.