Paul J Degruchy

US Patent:

7527263, May 5, 2009

Filed:

Sep 13, 2006

Appl. No.:

11/520373

Inventors:

Paul J. DeGruchy - Hilton NY, US
Henry T. Bober - Fairport NY, US
Xinzhong Zhang - Rochester NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 9/04

US Classification:

271242, 271273, 271228, 271252

Abstract:

A stalled roll registration system and method includes a mechanism that allows for pivoting deskew action in a pre-registration nip in the form of a segmented pre-registration drive roll assembly mounted on a releasable low friction lateral translation carriage. Outer pre-registration idler nips are provided that open to allow a sheet to pivot and close for transport the sheet. The pre-registration idlers are engaged and the drive roll assembly remains locked in the lateral position for initial paper transport up to the stalled registration roll. After the sheet arrives at the stalled registration roll and starts to form a buckle for deskew, the outer pre-registration idlers and carriage are released. The body of the sheet is then free to pivot about the center drive nip and translate in the lateral direction to self align itself with the registration roll.

US Patent:

7628396, Dec 8, 2009

Filed:

Mar 21, 2007

Appl. No.:

11/689290

Inventors:

Steven R. Moore - Pittsford NY, US
Paul J. Degruchy - Hilton NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 29/32

US Classification:

271197, 271194, 271183

Abstract:

A high speed sheet stacker includes a plurality of vacuum transport sub-assemblies interdigitated with an adjacent sub-assembly and provided with a spatial pitch that is less than or equal to a predetermined shingle distance. The collective vacuum transport assembly can thus acquire shingled sheets and transport the shingled sheets as a set, with each sheet being offset by at least one shingle distance. As a result, speed and acceleration requirements for the vacuum transport and the sheets being transported are greatly reduced compared to conventional vacuum transports that essentially transport sheets singularly. A shingled transport zone may be provided upstream of the vacuum transport system to accommodate sheets of varying size. In various embodiments, three to five vacuum transport sub-assemblies are provided to transport three to five sheets as a set.

US Patent:

7673876, Mar 9, 2010

Filed:

Feb 2, 2009

Appl. No.:

12/363819

Inventors:

Paul DeGruchy - Hilton NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 5/00
B65H 5/34

US Classification:

271264, 271270

Abstract:

Disclosed are method embodiments that incorporate calibration and printing operations to be used with a printing device. The printing device contains a sheet transport path with multiple adjacent sheet transport devices, each having at least one independently controlled drive roller. Each preceding sheet transport device feeds a sheet to a following sheet transport device along the path in succession. Two or more adjacent sheet transport devices are positioned to simultaneously engage the sheet as it is being transported along the path. The calibration operation is used to determine the particular drive roller angular velocity that should be used by each sheet transport device to compensate for drive roller contention during the printing operation and, thereby to ensure that the linear velocity of the sheet essentially remains constant as it is transported across each adjacent transport throughout the printing operation.

US Patent:

7681883, Mar 23, 2010

Filed:

May 4, 2006

Appl. No.:

11/417411

Inventors:

Paul J. DeGruchy - Hilton NY, US

Assignee:

Xerox Corporation - Norfolk CT

International Classification:

B65H 39/10

US Classification:

271298, 271303

Abstract:

A diverter assembly includes at least one rotary member disposed along a media transport pathway adjacent a diversion point therealong. The diverter assembly also includes a rotational motion source in operative association with the at least one rotary member. A printing system includes a diverter assembly. A method of transporting sheet media includes utilizing a diverter assembly.

US Patent:

7766327, Aug 3, 2010

Filed:

Sep 27, 2006

Appl. No.:

11/528770

Inventors:

Paul J. DeGruchy - Hilton NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 5/02
B65H 5/04

US Classification:

271272, 271 301, 271 303, 271 305, 271 308, 271273

Abstract:

The present disclosure provides a printing device comprising a sheet buffer including a paper path having a plurality of nip pairs for selectively receiving and releasing a plurality of printer sheets. The plurality of nip pairs include a fixed load nip pair, a fixed unload nip pair, and at least another intermediate fixed nip pair therebetween. In a first operation each subsequent sheet of the plurality of sheets is shingled over a previous sheet wherein the plurality of sheets can be stopped in the intermediate nip pair or pairs. Individual sheets of the plurality of sheets can be advanced to the unload nip pair sequentially in a second operation whereupon the individual sheets are successively unloaded as needed in a first in first out order.

US Patent:

7957656, Jun 7, 2011

Filed:

Dec 5, 2008

Appl. No.:

12/329080

Inventors:

Steven R. Moore - Pittsford NY, US
Paul J. DeGruchy - Hilton NY, US
Peter J. Knausdorf - Henrietta NY, US
Gerald M. Fletcher - Pittsford NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 15/00

US Classification:

399 45, 399388

Abstract:

A toner image transfer assembly has a tacking assembly, an image transfer assembly, and a media transport assembly. The tacking assembly senses critical properties of media while electrostatically tacking media to a transport device. The tacking assembly forwards data corresponding to the sensed electrical properties to the image transfer assembly so that the image transfer assembly anticipates the electrical properties of an approaching media type.

US Patent:

7967289, Jun 28, 2011

Filed:

Aug 26, 2009

Appl. No.:

12/547894

Inventors:

Marina L Tharayil - Rochester NY, US
Keith A Buddendeck - Rochester NY, US
Paul J Degruchy - Hilton NY, US
Steven R Moore - Pittsford NY, US
Barry P Mandel - Fairport NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 5/06

US Classification:

271274, 271273

Abstract:

A drive roll/idler roll nip release mechanism utilizes the motor used for the drive nip, coupled with one-way clutches, to power the nip release as a sheet is handed off to a downstream nip. A drive shaft is coupled to a first one-way clutch in one direction and an idler cam shaft is coupled to a second one-way clutch in the opposite direction. This allows the idler cam shaft to be driven only when the motor is reversed, and the drive shaft to be driven only when the motor is moving forward. The one-way clutch on the drive shaft allows the drive wheels to freewheel when the motor is reversed in order to engage the nip release. Thus, the nip release is activated while the drive nip continues to rotate in the direction of sheet motion.

US Patent:

7970301, Jun 28, 2011

Filed:

Nov 21, 2008

Appl. No.:

12/275648

Inventors:

Paul J. DeGruchy - Hilton NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 15/00
G03G 15/20
G03G 15/045
G03G 15/36
G03G 15/041

US Classification:

399 45, 399 44, 399 67, 399 86, 399156, 399182, 399196

Abstract:

Disclosed are printing methods, apparatus and systems to compensate for distortion caused by fusing toner to a media substrate. According to one exemplary embodiment, the method includes processing image data according to media characterization data for a measured fuser temperature. The media characterization data provides a basis to compensate for media substrate shrinkage due to fusing the printed image on the media substrate.