Trung Si Nguyen

US Patent:

6520616, Feb 18, 2003

Filed:

Sep 26, 2001

Appl. No.:

09/964166

Inventors:

David D Parks - Vancouver WA
Trung Vu Nguyen - Portland OR

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 29393

US Classification:

347 19, 347 59

Abstract:

A printer system for and corresponding method of determining an arrangement of status objects forming a status tree structure used to represent hardware components contained within a printer and the status tree structure stored within a print engine of the printer. A change in operational condition of one of the hardware components are detected with a sensor. A state of a status object corresponding to the one of the hardware components is changed to have an active state. A name of the status object having the changed state is transmitted from the print engine to a controller. The status object having the changed state is queried for a root path of the status object with the controller.

US Patent:

6604805, Aug 12, 2003

Filed:

Oct 2, 2001

Appl. No.:

09/970165

Inventors:

Trung Vu Nguyen - Portland OR
Stephen A Smith - Ridgefield WA
Dean C Bayerle - Poway CA

Assignee:

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

International Classification:

B41J 2938

US Classification:

347 14, 347 12

Abstract:

A method of and printing system for printing a multiple page print job on a print medium. A shingling sequence for a first page of the multiple page print job is opened by successively passing a printhead over the print medium and the first page is printed in a steady state mode of the printhead. The steady state mode of the printhead is maintained during a transition between printing the first page and printing a second page of the multiple page print job, such that the second page is printed as a continuation of the shingling sequence for the first page.

US Patent:

7391534, Jun 24, 2008

Filed:

May 29, 2003

Appl. No.:

10/447780

Inventors:

Trung Vu Nguyen - Portland OR, US
Thieu X. Dang - Vancouver WA, US
Lihua Xie - Vancouver WA, US
Brooke Hoyer - Vancouver WA, US

Assignee:

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

International Classification:

G06F 7/00
B41J 2/00

US Classification:

358 19, 358 113, 399 82, 399 85, 707100, 707101, 707102

Abstract:

In accordance with one embodiment, a method comprises querying, with a querying component, a print engine to ascertain one or more printmodes that are supported by the print engine, and, receiving, responsive to the querying, a list that describes printmodes supported by the print engine.

US Patent:

20080225073, Sep 18, 2008

Filed:

Mar 15, 2007

Appl. No.:

11/724908

Inventors:

Edward L. Feldhousen - Vancouver WA, US
Trung Vu Nguyen - Vancouver WA, US

International Classification:

B41J 29/393

US Classification:

347 19

Abstract:

A printing apparatus including: an imaging mechanism; a drum for advancing media sheets past the imaging mechanism for printing; an encoder coupled to the drum; a controller coupled to the encoder; and, a memory coupled to the controller and containing controller executable code and at least one table including a plurality of data entries each indicative of one of a plurality of sequential drum positions and at least one associated action; wherein, the controller executable code, when executed by the controller, causes the controller, for each data entry in the table, to: communicate data indicative of the indicated drum position to the encoder; receive an indication that the drum has rotated to the communicated drum position; responsively to the received indication, initiate the indicated associated action; and communicate data indicative of another of the data entries' associated drum position to the encoder responsively to the received indication.