Jeffrey T Hendricks

US Patent:

6350073, Feb 26, 2002

Filed:

Jul 12, 2000

Appl. No.:

09/615689

Inventors:

Gary Hays - Vancouver WA
John C Santon - Brush Prairie WA
Raymond C Sherman - Camas WA
William Watts - Vancouver WA
Jeffrey T Hendricks - Camas WA
Ivan F. Crespo - Vancouver WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 1142

US Classification:

400582, 400624, 400626, 347104

Abstract:

A Z-fold print media handling system for printing banners and the like uses an inkjet printing mechanism without a tractor-feed. A series of stuttering stopping and starting steps generates varying static and dynamic frictional forces to separate the first sheet of a Z-fold stack from the remainder of the stack. Both conventional cut-sheet media and Z-fold media are fed using the same printing mechanism, which pulls the media toward a printzone through frictional engagement with a first surface of the media To prevent printhead crashes and smearing the image near the perforations joining the Z-fold sheets, the printhead to media spacing is increased for Z-fold media over the standard spacing used for cut-sheet media. A cam feature is incorporated into the media drive clutch disk to determine whether an operator has set a selector lever for cut-sheet or Z-fold printhead to media spacing.

US Patent:

6494630, Dec 17, 2002

Filed:

Oct 31, 1999

Appl. No.:

09/431712

Inventors:

Kenneth R Williams - Vancouver WA
James P. Kearns - Corvallis OR
Jeffrey T Hendricks - Camas WA
Jose Antonio Alvarez - Madrid, ES
B Michael Eckard - Cariff CA

Assignee:

Hewlett-Packard Company - Palo ALto CA

International Classification:

B41J 160

US Classification:

400175, 347 20

Abstract:

A datum arrangement on the replaceable semi-permanent compact print cartridge includes three x-datums, one y-datum and two z-datums to assure proper seating of the print cartridge in the carriage as well as proper electric and fluidic interconnections.

US Patent:

6755516, Jun 29, 2004

Filed:

May 16, 2002

Appl. No.:

10/147118

Inventors:

Lisa M. Hanson - Vancouver WA
Curt G. Gonzales - Corvallis OR
Dion C. Davidson - Salt Lake City UT
Charles R. Steinmetz - Corvallis OR
Scott D. Sturgeon - Vancouver WA
David C. Johnson - Portland OR
Jeffrey T. Hendricks - Camas WA

Assignee:

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

International Classification:

B41J 2175

US Classification:

347 86, 347 87, 347 49

Abstract:

The present disclosure relates to a replaceable ink container for providing ink to an inkjet printing system. The inkjet printing system has a receiving station for receiving the replaceable ink container. The replaceable ink container includes a handle extending from a trailing end of the ink container for grasping the ink container for insertion into the receiving station. Also included is a latch for securing the replaceable ink container to the receiving station. The latch has an extended position for engaging the receiving station for securing the ink container to the receiving station and a retracted position. The latch is so disposed and arranged on the ink container to be urged from the extended position to the retracted position as the handle is grasped.

US Patent:

6969148, Nov 29, 2005

Filed:

Jul 31, 2001

Appl. No.:

09/919701

Inventors:

Scott D. Sturgeon - Vancouver WA, US
Jeffrey T. Hendricks - Camas WA, US
David C. Johnson - Portland OR, US
Charles R. Steinmetz - Corvallis OR, US
Daniel W. Petersen - Philomath OR, US

Assignee:

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

International Classification:

B41J002/01

US Classification:

347 49

Abstract:

An on-axis ink reservoir that is pivotally secured to the carriage of an inkjet printer thereby defining an engaged position, in which the ink reservoir is in fluid communication with a printhead secured to the carriage, and an open position, in which the ink reservoir pivots away from the printhead to allow easy access to the printhead without the need to remove the ink reservoir from the carriage. Preferably, the ink reservoir is detachably secured to an ink-reservoir mounting portion, the printhead is detachably secured to a printhead mounting-portion, and these two mounting portions are pivotally secured together. More preferably, the ink-reservoir mounting portion includes a plurality of ink reservoirs, and the printhead mounting-portion includes a plurality of printheads. A latching mechanism is provided to operably secure the two mounting portions together in the engaged position.

US Patent:

8177318, May 15, 2012

Filed:

Mar 17, 2009

Appl. No.:

12/381873

Inventors:

Alexander Govyadinov - Corvaltis OR, US
Vanessa Verzwyvelt - Vancouver WA, US
Prodpran Suetrong - Bangkok, TH
Jeffrey T. Hendricks - Camas WA, US

Assignee:

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

International Classification:

B41J 29/393

US Classification:

347 19, 347 52, 347 81

Abstract:

An orifice health detection device includes a fixed array of ink ejecting orifices, the ink ejecting orifices configured to eject at least one ink drop, a light source that produces a light beam configured to scatter light from the at least one ejected ink drop, and a light detector configured to detect light scattered from the at least one ejected ink drop.

US Patent:

8360552, Jan 29, 2013

Filed:

Oct 3, 2010

Appl. No.:

12/896894

Inventors:

Greg K. Justice - Vancouver WA, US
Jeffrey T. Hendricks - Camas WA, US
Michael L. Hilton - Vancouver WA, US
Patrick Therien - Camas WA, US

Assignee:

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

International Classification:

B41J 2/15
B41J 23/00

US Classification:

347 37, 347 22

Abstract:

In one embodiment, a carriage for carrying a fluid ejector cartridge includes: a body having a bay therein for holding a fluid ejector cartridge; a pump mounted to the body; a retaining cover connected to the body, the cover movable between an open position in which the cartridge may be installed in or removed from the bay and a closed position in which the cover contacts the cartridge in the bay to help retain the cartridge in place in the bay; and a port disposed within the cover such that the cover port is connected to a port on the cartridge when the cartridge is installed in the bay and the cover is in the closed position, the cover port operatively connected to the pump so that a fluid may be pumped into the cartridge through the cover and cartridge ports.

US Patent:

8403383, Mar 26, 2013

Filed:

Oct 10, 2008

Appl. No.:

12/249900

Inventors:

Bruce A. McFadden - Vancouver WA, US
Jeffrey T. Hendricks - Camas WA, US

Assignee:

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

International Classification:

B65D 45/02

US Classification:

292257, 292 7, 292 46, 292 47, 292216, 347 49

Abstract:

An apparatus and a method retain a print unit in a dock with a retainer that is at least partially below a top of a fluid supply of the print unit.

US Patent:

59676779, Oct 19, 1999

Filed:

Jan 27, 1998

Appl. No.:

9/013851

Inventors:

Thomas E McCue - Vancouver WA
Gary Hays - Vancouver WA
John C Santon - Brush Prairie WA
Raymond C Sherman - Camas WA
William Watts - Vancouver WA
Jeffrey T Hendricks - Camas WA
Ivan F. Crespo - Vancouver WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 1142

US Classification:

400582

Abstract:

A Z-fold print media handling system for printing banners and the like uses an inkjet printing mechanism without a tractor-feed. A series of stuttering stopping and starting steps generates varying static and dynamic frictional forces to separate the first sheet of a Z-fold stack from the remainder of the stack. Both conventional cut-sheet media and Z-fold media are fed using the same printing mechanism, which pulls the media toward a printzone through frictional engagement with a first surface of the media. To prevent printhead crashes and smearing the image near the perforations joining the Z-fold sheets, the printhead to media spacing is increased for Z-fold media over the standard spacing used for cut-sheet media. A cam feature is incorporated into the media drive clutch disk to determine whether an operator has set a selector lever for cut-sheet or Z-fold printhead to media spacing.