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:

6375315, Apr 23, 2002

Filed:

Apr 11, 2000

Appl. No.:

09/547271

Inventors:

Charles R. Steinmetz - Corvallis OR
Scott D. Sturgeon - Vancouver WA
David C. Johnson - Portland OR
Jeffrey T. Hendricks - Camas WA

Assignee:

Hewlett-Packard Company - Fort Collins CO

International Classification:

B41J 2175

US Classification:

347 86, 347 85

Abstract:

A replaceable ink container for providing ink to an inkjet printing system. The inkjet printing system has a receiving station that is mounted to a scanning carriage. The receiving station has a keyed portion being indicative of a replaceable ink container parameter of a plurality of replaceable ink container parameters. The replaceable ink container includes a reservoir portion having a leading end and a trailing end relative to an insertion direction into the receiving station. Also included is a keying portion disposed on the trailing end and configured to be complementary to the keyed portion thereby allowing the replaceable ink container to be fully inserted into the receiving station.

US Patent:

6485383, Nov 26, 2002

Filed:

May 10, 2000

Appl. No.:

09/568442

Inventors:

Jeffrey T. Hendricks - Camas WA
Robert P. Callaway - Vancouver WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

F16H 708

US Classification:

474101

Abstract:

A method and apparatus for maintaining a substantially constant belt tension under changing temperature conditions is provided by a geometric layout of a motor, belt and pulley system and a selection of manufacturing materials for component parts having a predetermined relationship of thermal expansion coefficients between themselves.

US Patent:

6488368, Dec 3, 2002

Filed:

Jan 26, 2001

Appl. No.:

09/772250

Inventors:

Daniel W. Petersen - Philomath OR
Charles R. Steinmetz - Corvallis OR
Scott D. Sturgeon - Vancouver WA
Jeffrey T. Hendricks - Camas WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 85

Abstract:

Disclosed is a manifold providing fluid connections between a plurality of carriage-mounted ink reservoirs and multiple carriage-mounted printheads, the manifold having ink conduits allowing the spacing, ordering, or number of printheads to differ from the spacing, ordering, or number of ink reservoirs. The manifold also serves to mechanically isolate the printheads from the ink reservoirs, such that replacement of one or more reservoir does not adversely affect the alignment of the printheads. The manifold allows simple optimization of a printing system to a particular application by replacing the manifold with one of a different configuration.

US Patent:

6488369, Dec 3, 2002

Filed:

Jan 31, 2000

Appl. No.:

09/495060

Inventors:

Charles R Steinmetz - Corvallis OR
Scott D Sturgeon - Vancouver WA
David C Johnson - Portland OR
Jeffrey T Hendricks - Camas WA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 2175

US Classification:

347 86, 347 50

Abstract:

The present disclosure relates to a replaceable ink reservoir for installation into a printing system that has a moveable carriage for repositioning a printing portion relative to print media. The replaceable ink reservoir includes an ink reservoir that does not have an integral printing portion. Also included is an electrical storage device for storing information. The installation of the ink reservoir into the moveable carriage establishes both fluid communication between the ink reservoir and the moveable carriage and establishes electrical continuity between the electrical storage device and the moveable carriage.

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:

6692102, Feb 17, 2004

Filed:

Jul 17, 2002

Appl. No.:

10/198291

Inventors:

Jeffrey T. Hendricks - Camas WA

Assignee:

Hewlett-Packard Development Company, LP - Houston TX

International Classification:

B41J 2300

US Classification:

347 37

Abstract:

The present invention involves a printing device having a frame which defines therein X, Y, and Z operative, orthogonal axes, plural-site, Z-axis datuming structure operatively interposed a printhead assembly and a carriage supporting that assembly within the device, the Z-axis datuming structure, comprising first and second datuming sites spaced generally in an X-axis direction, and a third datuming site spaced from both the first and second sites in a Y-axis direction, and from at least one of the first and second sites in an X-axis direction.

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.