George B Clifton

US Patent:

6349185, Feb 19, 2002

Filed:

Aug 30, 2000

Appl. No.:

09/652608

Inventors:

Theresa A. Burkes - Meridian ID
George B. Clifton - Boise ID

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G03G 1500

US Classification:

399 49, 399 72

Abstract:

Methods and apparatus for reducing the time required to generate a plurality of calibration image products on a transfer medium in an inline imaging device. In the method, the image producing device has a transfer medium and a developer section configured to deposit toner onto the transfer medium to thereby generate the calibration image products. One method includes depositing toner onto the transfer medium using the developer section to produce a first calibration image product. Thereafter, toner is deposited onto the transfer medium to produce at least a portion of a second calibration image product. The portion of the second calibration image is produced prior to removing the entire first calibration image product from the transfer medium. An apparatus includes a scanning section, a developer section, a transfer medium and a calibration image product generator. The calibration image generator is configured to generate a first calibration image product by causing the developer section to selectively deposit toner onto the transfer medium at a first location.

US Patent:

6529697, Mar 4, 2003

Filed:

Aug 30, 2000

Appl. No.:

09/652609

Inventors:

Theresa A. Burkes - Meridian ID
George B. Clifton - Boise ID

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G03G 1500

US Classification:

399 72, 399 60

Abstract:

Methods and apparatus for reducing the time required to generate a calibration image product on a transfer medium in an inline imaging device having a plurality of toner stations by simultaneously applying at least two toners to the transfer medium. In one method of the present invention, each toner station is configured to deposit an associated toner onto the transfer medium to thereby generate the calibration product. The method includes the step of depositing a first toner from a first toner station and a second toner from a second toner station onto the transfer medium while moving the transfer medium from a first position relative to the plurality of toner stations to a second position. An apparatus of the present invention includes a scanning section, a plurality of toner stations, a transfer medium, and a calibration image product generator. Each toner station is configured to deposit a dedicated toner onto the transfer medium.

US Patent:

6744997, Jun 1, 2004

Filed:

Nov 14, 2002

Appl. No.:

10/295291

Inventors:

Theresa A. Burkes - Meridian ID
George B. Clifton - Boise ID

Assignee:

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

International Classification:

G03G 1500

US Classification:

399 72, 399301, 399 38, 399 39, 399 41, 399 46

Abstract:

A method for generating a calibration product for an image producing device. The image producing device includes a plurality of toner stations and a transfer medium. Each toner station is configured to deposit an associated toner onto the transfer medium to thereby generate the calibration product. The method includes depositing a first toner from a first toner station onto the transfer medium while moving the transfer medium from a first position relative to the plurality of toner stations to a second position. The method further includes depositing a second toner from a second toner station onto the transfer medium while continuing to deposit the first toner onto the transfer medium while moving the transfer medium from the second position to a third position.

US Patent:

6760555, Jul 6, 2004

Filed:

Mar 21, 2002

Appl. No.:

10/103451

Inventors:

Patrick S. Dougherty - Boise ID
George Bernhard Clifton - Boise ID

Assignee:

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

International Classification:

G03G 1508

US Classification:

399103, 399105

Abstract:

The present invention is directed to a sealing mechanism for use in a toner cartridge. The sealing mechanism includes a developer roller and a toner plow. The developer roller has an outer cylindrical surface. The toner plow includes a concave contact region configured to mate with the outer cylindrical surface of the developer roller and a toner plow face placed at an acute angle with respect to a longitudinal axis of the developer roller.

US Patent:

6915353, Jul 5, 2005

Filed:

Aug 1, 2001

Appl. No.:

09/920589

Inventors:

Theresa A. Burkes - Meridian ID, US
George Bernhard Clifton - Boise ID, US
Steven Robert Folkner - Boise ID, US
Angela Kay Hanson - Eagle ID, US
Kenneth Joseph O'Hara - Boise ID, US

Assignee:

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

International Classification:

G06F015/16

US Classification:

709248, 709220, 709221, 709222

Abstract:

A method and apparatus for determining an appropriate recalibration duty cycle. The method instructs a network connected computer peripheral to access one or more servers to retrieve a timestamp. Retrieved timestamps are used to calculate the elapsed time since the last trigger-event (e. g. , last calibration, printing activity, time of power-off, or the like). If the calculated elapsed time is less than a predetermined or dynamically determined threshold, the method instructs the peripheral to omit otherwise implemented calibration activities, e. g. , a power surge reboot.

US Patent:

7272076, Sep 18, 2007

Filed:

Jun 25, 2001

Appl. No.:

09/888941

Inventors:

Theresa A. Burkes - Meridian ID, US
George B. Clifton - Boise ID, US
Steven R. Folkner - Boise ID, US
Angela K. Hanson - Eagle ID, US
Linda S. Rodda - Star ID, US
Patrick D. Walker - Eagle ID, US
Kenneth J. O'Hara - Boise ID, US

Assignee:

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

International Classification:

G06F 17/60
H04Q 7/20

US Classification:

368 29, 705 1, 705 7, 455466, 455414, 455418, 455419, 455420, 455550

Abstract:

A method for determining a warranty start date for a product has steps of determining a warranty start event and generating a warranty start date after occurrence of the warranty start event. The timestamp may be generated through a query to a time server on a network connected to the product. Preferred examples of warranty start events comprise first use by the user, and production of a specified cumulative quantity of product output. The warranty start event as well as the generated warranty start date are preferably stored on a memory internal to the product.

US Patent:

8577233, Nov 5, 2013

Filed:

Apr 10, 2008

Appl. No.:

12/935409

Inventors:

Eric S. Schneider - Boise ID, US
George B. Clifton - Boise ID, US
Ben Tyson - Eagle ID, US
Gustavo M. Guillemin - Jalisco, MX
Quintin T. Phillips - Boise ID, US

Assignee:

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

International Classification:

G03G 15/01

US Classification:

399 39

Abstract:

A method for color printing includes the steps of determining a voltage level of electrical power supplied to an electrophotographic printing device having multiple colors of toner, the voltage level defining a fusing capacity, and selecting a color table, stored in memory, defining a maximum toner application level for each color of toner, based upon the fusing capacity.

US Patent:

51160340, May 26, 1992

Filed:

Dec 14, 1990

Appl. No.:

7/627787

Inventors:

Jeffrey L. Trask - Boise ID
George B. Clifton - Boise ID
Kenneth E. Heath - Boise ID

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B65H 344

US Classification:

271 2

Abstract:

A mechanism is described for automatically handling envelopes and paper sheets, the mechanism having an input window for receiving the envelopes and paper sheets. The mechanism comprises a first tray for holding a stack of paper sheets and is mountable in the window. A second tray is provided for holding a stack of envelopes and is also mountable in the window. A roller system is positioned to selectively engage the topmost sheet of the stack of sheets in the first tray or a bottommost envelope of the stack of envelopes in the second tray and to feed either the topmost sheet or the bottommost envelope, as the case may be.