John M Wade

6386674, May 14, 2002

Oct 29, 1999

09/429942

John M Wade - Poway CA
Pere Esterri - Barcelona, ES
Clayton L Holstun - San Marcos CA
Glenn T Haddick - San Diego CA
Jeffery S Beck - Corvallis OR
Dennis J. Schloeman - Corvallis OR

Hewlett-Packard Company - Palo Alto CA

B41J 29393

347 19, 347 12, 347 43

An inkjet printing system having multiple independent power supplies for providing firing energy to the ink ejection elements of one or more printheads. Different ones of the power supplies can be connected to different print cartridges each of which prints a different color ink; to different arrays of ink ejection elements within a single print cartridge, where each array prints a different color ink; or to different sections of the ink ejection element array of a single printhead for a single color ink. The output of each power supply is independently set to an appropriate voltage level for each different print cartridge, ink ejection element array, or section of an array.

6523920, Feb 25, 2003

Feb 1, 2001

09/773984

John M. Wade - Poway CA
Jaime E. Bohorquez - Escondido CA

Hewlett-Packard Company - Palo Alto CA

B41J 214

347 3, 347 19, 347 47, 358472

A housing is configured for removable insertion into a reciprocable carriage of a printer. A thermal ink jet print assembly is mounted in the housing and includes a nozzle plate for forming a plurality of ink dots on a print media adjacent to the housing. A light source is mounted in the housing for illuminating the print media adjacent to the housing. A sensor is mounted in the housing for receiving light reflected from the print media and generating electrical signals representative thereof. The combination inkjet pen and optical scanner reduces the parts count, cost and complexity associated with optical document scanning by incorporating this capability into the pen of a thermal ink jet printer. It also permits the monitoring of dot position, dot size and/or spectral information in a thermal ink jet printer in order to make nozzle firing command corrections and improve print quality during printing. Methods are also disclosed for determining whether a sheet of print media is compatible with the ink of a thermal ink jet printer and for determining the incremental paper advance distance through a thermal ink jet printer to allow adjustments that will optimally nest the print swaths.

6536871, Mar 25, 2003

Feb 1, 2000

09/496136

Glenn T Haddick - San Diego CA
John M Wade - Poway CA
B Michael Eckard - Cardiff CA

Hewlett-Packard Company - Palo Alto CA

B41J 201

347 50

Electrical operation signals such are transferred between a printer carriage interconnect circuit and a printhead interconnect circuit through conductive pads, some of which are elongated sufficiently to provide multiple conductive contact points. Positioning the elongated pads at an angle relative to a longitudinal axis of an interconnect flex circuit results in a compact flex circuit having voltage, ground and control signal pads.

6575548, Jun 10, 2003

Feb 19, 1999

09/253447

Graham Ross - Poway CA
John M Wade - Poway CA

Hewlett-Packard Company - Palo Alto CA

B41J 201

347 19

This present invention is embodied in a printing system and protocol for providing efficient control of energy characteristics of an inkjet printhead. The printing system includes a controller, a power supply and a printhead assembly having a memory device and a distributive processor integrated with an ink driver. The distributive processor maintains energy characteristics of the printhead assembly within preprogrammed acceptable boundaries.

6619794, Sep 16, 2003

Oct 31, 2001

10/003939

John M Wade - San Diego CA

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

B41J 201

347102

The present invention is embodied in a system and method for optimizing ink drying time through the incorporation of a system of multiple spaced printheads. The printhead assembly includes connection and processing circuitry, multiple printhead bodies, ink channels, substrates, such as semiconductor wafers (commonly referred to as a die), and nozzle members. The printheads also include controllers for controlling printing on a print media and incorporating a programmable feedback loop. The loop activates the various printheads during printing so that the various data packets are added in a synchronized manner during the print swath. The present invention provides adequate drying time for inks produced in a printing swath on a wide array page. This will result in the use of water based inks compatible with ink jet materials in systems with fast raster scanning.

6966627, Nov 22, 2005

Jun 27, 2003

10/608642

Victor T. Escobedo - Bonita CA, US
Kenneth J. Courian - San Diego CA, US
Scott Hock - Poway CA, US
John Wade - Ramona CA, US

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

B41J002/15
B41J002/135

347 41, 347 44

A printhead for printing on a print media includes a column of nozzles oriented at an angle to an axis of relative movement between the printhead and the print media, and a print axis oriented substantially parallel to the axis of relative movement between the printhead and the print media such that at least some of the nozzles are variably aligned to the print axis.

6975925, Dec 13, 2005

Mar 19, 2003

10/393703

David L. Barnes - Alpine CA, US
Ruben Juarez - Chula Vista CA, US
John Wade - Portland OR, US

Windlynx Systems, B.V. - San Diego CA

H02J001/14

700286, 700287

Methods and apparatus for forecasting an energy output of a wind farm. A method for forecasting an energy output of a wind farm includes maintaining a data base of wind patterns, each wind pattern being associated with an energy output that the wind farm produces. The method includes receiving a current wind pattern. The method includes searching the data base for a wind pattern that matches the current wind pattern. The method includes calculating a forecast energy output that the wind farm will produce in response to the current wind pattern, the calculation being based, when there is a matching wind pattern in the knowledge base, on the energy output associated with the matching wind pattern.

7175248, Feb 13, 2007

Feb 27, 2004

10/789189

John Wade - Ramona CA, US

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

B41J 29/393
B41J 29/38

347 19, 347 9, 347 12

A fluid ejection device includes a plurality of fluid ejecting elements, each fluid ejecting element controllable to conduct electrical current between a supply voltage and a reference voltage. Up to all fluid ejecting elements of a group of the plurality of fluid ejecting elements are configured to conduct during a time period. Each conducting fluid ejecting element has a corresponding fluid ejecting voltage when conducting. A feedback circuit is configured to provide a feedback voltage substantially equal to an average of corresponding fluid ejecting voltages at the fluid ejecting elements that are conducting.