Steven V Korol

6481840, Nov 19, 2002

Aug 25, 1999

09/383034

Rolf K. Mueller - Tigard OR
Steven V. Korol - Dundee OR
Wolfgang G. Wedler - Tualatin OR
Jeffrey R. Kohne - Tualatin OR
Mary Ryan-Hotchkiss - Portland OR
Donald R. Titterington - Portland OR
Gerard H. Rousseau - Portland OR

Xerox Corporation - Stamford CT

B41J 2175

347 88, 347103

A method of improving automatic document feed of media printed with phase change inks coats the surface of the phase change inks on the media with fine particles. The particles may include PMMA, glass bead, silica particles, crushed glass particles, kaolin clay, micronized PE and PTFE, calcium carbonate powder, hard inks or toner powder. The particles may be applied to the surface of a transfix drum by oil transfer or electrostatically prior to jetting the phase change ink, or in the case of hard inks may be jetted onto the surface of the transfix drum (offset) with the phase change ink or onto the print media (direct) after application of the phase change ink in an overprint printing process. Also the particles may be applied by a pair of finishing rollers after the media has been printed with the phase change inks, either in a direct or offset print process, the finishing roller on the print side being coated with the fine particles.

6629739, Oct 7, 2003

Dec 14, 2000

09/738676

Steven V. Korol - Dundee OR

Xerox Corporation - Stamford CT

B41J 2938

347 10, 347 11

An apparatus and method provide on-demand drop volume modulation by utilizing a single transducer driving waveform to drive an ink jet. The driving waveform includes at least a first portion and a second portion that each excites a different modal resonance of ink in an ink jet orifice to produce ink drops having different volumes. A control signal is applied to the driving waveform to actuate the selected portion of the waveform to eject the desired ink drop volume. The apparatus and method improves resolution in gray scale printing by knowing an input request and placing a combination of small drops and large drops in a conventional blue noise halftone screen represented as a threshold array such that throughput and image quality goals are met while decreasing jetting robustness risk.

7543901, Jun 9, 2009

Nov 8, 2005

11/270214

Trevor J. Snyder - Newberg OR, US
Amy R. Bartlett - Tigard OR, US
Bo Wu - Wilsonville OR, US
Randall R. Bridgeman - Tualatin OR, US
Andrew W. Hill - Portland OR, US
Jennifer Miyamoto - Portland OR, US
Donald R. Titterington - Newberg OR, US
Steven V. Korol - Dundee OR, US
David L. Knierim - Wilsonville OR, US

Xerox Corporation - Norwalk CT

B41J 29/38

347 17, 347 99

A method of operating a printer turns off a support structure heater when the printer enters standby mode. The print head is then moved away from an intermediate transfer surface supported by a support structure. Heat settings used to heat a print head are then varied to heat the print head and the support structure. Another method of operating a printer turns off a support structure heater when the printer enters standby mode and holds a print head adjacent to an intermediate transfer surface while the printer is in standby mode.

7575302, Aug 18, 2009

Dec 14, 2005

11/304367

Dan L. Massopust - Powell Butte OR, US
Curtis D. Keller - West Linn OR, US
Steven R. Slotto - Camas WA, US
Peter J. Nystrom - Webster NY, US
John R. Andrews - Fairport NY, US
Steven V. Korol - Dundee OR, US
Scott T. Treece - Portland OR, US
Britton T. Pinson - Vancouver WA, US
Chad J. Slenes - Sherwood OR, US
Samuel Schultz - Wilsonville OR, US
Lee M. Oien - Wilsonville OR, US
Jonathan R. Brick - Tualatin OR, US

Xerox Corporation - Norwalk CT

B41J 2/05

347 58, 347 59

A printing system includes a print head to deliver ink to an image receptor and at least one ink reservoir to deliver ink to the print head. Driving circuitry provides signals to the print head to control delivery of the ink and a flexible circuit interposed between the print head and the ink reservoirs connects the driving circuitry to the print head. The flexible circuit may include a heater to provide heat to the ink reservoirs. Alternatively, the flexible circuit may be replaced with a rigid substrate having a heater within its layers.

7926898, Apr 19, 2011

May 15, 2009

12/467150

Trevor J. Snyder - Newberg OR, US
Amy R. Bartlett - Tigard OR, US
Bo Wu - Wilsonville OR, US
Randall R. Bridgeman - Tualatin OR, US
Andrew W. Hill - Portland OR, US
Jennifer Miyamoto - Portland OR, US
Donald R Titterington - Newberg OR, US
Steven V. Korol - Dundee OR, US
David L. Knierim - Wilsonville OR, US

Xerox Corporation - Norwalk CT

B41J 29/38

347 17, 347 5, 347 88

A method of operating a printer turns off a support structure heater when the printer enters standby mode. The print head is then moved away from an intermediate transfer surface supported by a support structure. Heat settings used to heat a print head are then varied to heat the print head and the support structure. Another method of operating a printer turns off a support structure heater when the printer enters standby mode and holds a print head adjacent to an intermediate transfer surface while the printer is in standby mode.

20010055052, Dec 27, 2001

Jul 27, 2001

09/917492

Rolf Mueller - Tigard OR, US
Steven Korol - Dundee OR, US
Wolfgang Wedler - Tualatin OR, US
Jeffrey Kohne - Tualatin OR, US
Augustus Rogers - West Linn OR, US
Mary Ryan-Hotchkiss - Portland OR, US
Donald Titterington - Portland OR, US
Gerard Rousseau - Portland OR, US

Xerox Corporation

B41J002/175

347/088000

A method of improving automatic document feed of media printed with phase change inks coats the surface of the phase change inks on the media with fine particles. The particles may include PMMA, glass bead, silica particles, crushed glass particles, kaolin clay, micronized PE and PTFE, calcium carbonate powder, hard inks or toner powder. The particles may be applied to the surface of a transfix drum by oil transfer or electrostatically prior to jetting the phase change ink, or in the case of hard inks may be jetted onto the surface of the transfix drum (offset) with the phase change ink or onto the print media (direct) after application of the phase change ink in an overprint printing process. Also the particles may be applied by a pair of finishing rollers after the media has been printed with the phase change inks, either in a direct or offset print process, the finishing roller on the print side being coated with the fine particles.

20090271979, Nov 5, 2009

Jul 13, 2009

12/502115

DAN L. MASSOPUST - POWELL BUTTE OR, US
CURTIS D. KELLER - WEST LINN OR, US
STEVEN R. SLOTTO - CAMAS WA, US
PETER J. NYSTROM - WEBSTER NY, US
JOHN R. ANDREWS - FAIRPORT NY, US
STEVEN V. KOROL - DUNDEE OR, US
SCOTT T. TREECE - PORTLAND OR, US
BRITTON T. PINSON - VANCOUVER WA, US
CHAD J. SLENES - SHERWOOD OR, US
SAMUEL SCHULTZ - WILSONVILLE OR, US
LEE M. OIEN - WILSONVILLE OR, US
JONATHAN R. BRICK - TUALATIN OR, US

XEROX CORPORATION - Norwalk CT

H05K 3/36

29830

A printing system includes a print head to deliver ink to an image receptor and at least one ink reservoir to deliver ink to the print head. Driving circuitry provides signals to the print head to control delivery of the ink and a flexible circuit interposed between the print head and the ink reservoirs connects the driving circuitry to the print head. The flexible circuit may include a heater to provide heat to the ink reservoirs. Alternatively, the flexible circuit may be replaced with a rigid substrate having a heater within its layers.

59661500, Oct 12, 1999

Nov 10, 1997

8/968778

Audrey A. Lester - Sherwood OR
Steven V. Korol - Dundee OR
Stephen M. Kroon - Sherwood OR
C. Wayne Jaeger - Beaverton OR

Tektronix, Inc. - Wilsonville OR

B41J 221
B41J 217
B41J 201
G01D 1100

347 43

A method of printing with phase change ink on an ink jet printer that contains multiple levels of black gray scale ink and a clear or slightly tinted wax ink base and which is applied to the roughened surface of an adhesion promoting coating applied to a transparent substrate is disclosed. The adhesion promoting coating has a surface roughness of greater than about 0. 5 micrometers and contains a binder and an inorganic particulate material.