Peter J Nystrom, Age 61Webster, NY

6343848, Feb 5, 2002

Jan 19, 1999

09/232820

Richard H. Berg - Greece NY
Peter J. Nystrom - Webster NY

Xerox Corporation - Stamford CT

B41J 29377

347 18

A heat sink, provides a heat transfer pathway to remove heat from the rear face of a printhead substrate. The heat sink is located between the printhead substrate and the printer carriage. The heat sink may, in one embodiment, be biased to float substantially normal to the rear face of a printhead substrate using a biasing device, such as one or more springs, or a one or more spring clips. The springs, which are compressed, tend to urge the face of the heat sink against the back face of the printhead, forming an interface between the two faces. Additional force can be provided by a carriage arm, as its radius acts as a moment arm to assist in pressing the two faces together. A low thermal heat conductivity contact resistance and an improved thermal resistance to heat dissipation between the printhead substrate and the heat sink are provided by the high pressure interface resulting from the use of the springs and the radius of the carriage arm. An additional layer of heat conductive material can be provided at the interface of the heat sink and the printhead substrate. This can reduce the ability of air pockets to form between the heat sink and the printhead substrate.

6540315, Apr 1, 2003

Jan 16, 2002

10/046195

Peter Nystrom - Webster NY
Mark Cellura - Webster NY
John Walsh - Rochester NY

Xerox Corporation - Stamford CT

B41J 2938

347 12

System and methods for using a fluid ejection system to distribute fluid drop density of a region between at least two overlapping swaths having pixels on a receiving medium. Using the method, overlapping swaths are stitched together by distributing a fluid ejection pattern between the overlapping swaths within the overlapped region. Because small drops of fluid can be distributed within a single region, the fluid ejection pattern can be controlled and intermediate density regions can be created by distributing the fluid of drops within a region between two fluid ejector heads or between two swaths of the same fluid ejector head. The distribution can be linear or non-linear. Furthermore, overlapping swaths are stitched together by randomly varying a stitch location within the overlapped region. In this case, a stitch location is randomly varied in the slow scan direction.

6955419, Oct 18, 2005

Nov 5, 2003

10/702935

John R. Andrews - Fairport NY, US
Cathie J. Burke - Rochester NY, US
Peter J. Nystrom - Webster NY, US
Richard Schmachtenberg, III - Aloha OR, US

Xerox Corporation - Stamford CT

B41J002/045

347 70, 347 68

A drop emitting apparatus including a diaphragm layer disposed on a fluid channel layer, a thin film circuit having raised contact regions disposed on the diaphragm layer, and a plurality of electromechanical transducers conductively attached to the raised contact regions.

6987348, Jan 17, 2006

Sep 16, 2003

10/664472

Steven A. Buhler - Sunnyvale CA, US
Karl A. Littau - Palo Alto CA, US
John S. Fitch - Los Altos CA, US
John R. Andrews - Fairport NY, US
Cathie J. Burke - Rochester NY, US
Peter J. Nystrom - Webster NY, US
Richard Schmachtenberg, III - Aloha OR, US

Palo Alto Research Center Inc. - Palo Alto CA

H02K 41/08

310330, 310331

A system and method of operation for a piezoelectric transducer is described which utilizes a mesa structure interposed between a piezoelectric material element and a chamber diaphragm. The system can be used as a sensor where a net motion to the diaphragm causes a net charge equal to the sum of the charges on each piezoelectric diaphragm. Alternatively, the system can be used as an actuator wherein an applied voltage causes movement of the piezoelectric transducer and the chamber diaphragm.

7048361, May 23, 2006

Nov 5, 2003

10/702247

Richard Schmachtenberg, III - Aloha OR, US
John R. Andrews - Fairport NY, US
Cathie J. Burke - Rochester NY, US
Peter J. Nystrom - Webster NY, US

Xerox Corporation - Stamford CT

B41J 2/14
B41J 2/16

347 71, 298901

A drop emitting apparatus including a diaphragm layer disposed on a fluid channel layer, a roughened bonding region formed on a surface of the diaphragm layer, a thin film circuit having conformal raised contact regions disposed on the bonding region, and a plurality of electromechanical transducers adhesively attached to the raised contact regions and electrically connected to the conformal raised contact regions by asperity contacts formed between the conformal raised contact regions and the electromechanical transducers.

7131628, Nov 7, 2006

Jul 28, 2004

10/901285

Kathleen A. Feinberg - Rochester NY, US
Peter M. Gulvin - Webster NY, US
Nancy Y. Jia - Webster NY, US
Peter J. Nystrom - Webster NY, US

Xerox Corporation - Stamford CT

F16J 3/00

251 12

A vent connects a chamber to the external atmosphere surrounding a device to equalize pressure within the chamber. The vent has a size and shape to allow pressure equalization to occur outside a normal operating cycle of the chamber and controls the pressure to prevent undesirable deflection of a membrane within the chamber and ensure proper operation of the device.

7331655, Feb 19, 2008

May 19, 2005

11/132470

Peter J. Nystrom - Webster NY, US
John R. Andrews - Fairport NY, US

Xerox Corporation - Norwalk CT

B41J 2/05

347 56, 347 65

Plural film layers are disposed on a substrate. Each film layer has regions devoid of film material, thus forming film layer cavity openings. Each film layer has its cavities arranged to provide fluid coupling with its adjacent film layer or layers. The film layer cavities form a traverse channel coupling the top and bottom film layers and also one or more lateral channels coupling cavity openings in the top film layer. The film layer traverse channel couples with a substrate channel that extends from the substrate top surface to one or more of its other surfaces. A device such as a fluid dispenser, fluid ejector, sensor or bioprocessing device is disposed on the top film layer and fluidly coupled to the plural film layers traverse and lateral channels. The traverse channel and the one or more lateral channels are arranged to transport or flow one or more fluids.

7445315, Nov 4, 2008

Nov 15, 2004

10/990110

Michael Yu Tak Young - Cupertino CA, US
Steven A. Buhler - Sunnyvale CA, US
Scott Jong Ho Limb - Palo Alto CA, US
Karl A. Littau - Palo Alto CA, US
Beverly J. Russo - Sunnyvale CA, US
Scott E. Solberg - Mountain View CA, US
Michael C. Weisberg - Woodside CA, US
Cathie J. Burke - Rochester NY, US
Richard Schmachtenberg - Aloha OR, US
Peter J. Nystrom - Webster NY, US
Sharon Berger - Canby OR, US
Timothy Trang - Portland OR, US
Thomas Long - Corbett OR, US

Palo Alto Research Center Incorporated - Palo Alto CA

B41J 2/05

347 56, 347 62

A liquid drop ejector comprising a jet stack, thin film or thick film heaters formed on the surface of the jet stack, and at least one thin film or thick film temperature sensor operative to provide feedback temperature control for the thin film or thick film heater elements is provided. In one form, the liquid drop ejector also has the thin film or thick film heater elements grouped in segments that are operative to be individually controlled. In addition, in another form, the signal lines provided to the liquid drop ejector are patterned to allow for more uniform resistance over the span of the liquid drop ejector.