公开(公告)号：US20230015142A1

公开(公告)日：2023-01-19

申请号：US17374762

申请日：2021-07-13

Applicant: XEROX CORPORATION

Inventor： Linn C. Hoover ,  Joseph C. Sheflin ,  Jason M. LeFevre ,  Seemit Praharaj ,  David Alan Vankouwenberg ,  Chu-Heng Liu ,  Douglas K. Herrmann, JR.

IPC: B22D43/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/00 ,  B22D23/00

Abstract: A dross extraction system for a printer is disclosed, which includes an ejector defining an inner cavity associated therewith, the inner cavity retaining a liquid printing material. The dross extraction system also includes a first inlet coupled to the inner cavity of the ejector, a probe external to the ejector, which is selectably positionable to contact the liquid printing material to attract dross thereto, thereby extracting dross from the liquid printing material when the probe is withdrawn from the liquid printing material. A method of extracting dross from a metal jetting printer is also disclosed, which includes pausing an operation of the metal jetting printer, advancing a probe into a melt pool within a nozzle pump reservoir in the metal jetting printer, extracting dross from the metal printing material and onto the probe, retracting the probe from the nozzle pump reservoir, and resuming the operation of the metal jetting printer.

公开(公告)号：US11547771B2

公开(公告)日：2023-01-10

申请号：US17177300

申请日：2021-02-17

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Douglas K. Herrmann ,  Chu-Heng Liu ,  Paul J. McConville ,  Jason M. LeFevre ,  Linn C. Hoover ,  David A. VanKouwenberg

IPC: H04N1/00 ,  A61L2/10

Abstract: An apparatus includes, among other components, a frame adapted to be connected to the exterior surface of a device that has a touchscreen. A retractable cover is operatively connected to the frame. The size of the retractable cover is equal to at least the size of the touchscreen, and the retractable cover is positioned to extend so as to cover the touchscreen. At least one ultraviolet light is also operatively connected to the frame. The ultraviolet light is positioned to direct ultraviolet lighting toward the touchscreen when the retractable cover extends to cover the touchscreen.

公开(公告)号：US20220105684A1

公开(公告)日：2022-04-07

申请号：US17060600

申请日：2020-10-01

Applicant: XEROX CORPORATION

Inventor： Jason M. LeFevre ,  Douglas K. Herrmann ,  Paul J. McConville ,  Chu-Heng Liu ,  Seemit Praharaj

IPC: B29C64/379 ,  B29C64/232 ,  B29C64/236 ,  B29C64/209 ,  B29C64/112 ,  B29C64/241

Abstract: A three-dimensional (3D) printer is configured to introduce a liquid metal onto a first part and a second part while the first part and the second part are in contact with one another. The liquid metal subsequently solidifies to join the first part and the second part together to produce an assembly

公开(公告)号：US11249240B2

公开(公告)日：2022-02-15

申请号：US15630185

申请日：2017-06-22

Applicant: Xerox Corporation

Inventor： Chu-Heng Liu ,  Patrick Jun Howe ,  David C. Craig

IPC: G02B6/00 ,  F21V8/00

Abstract: A display device component includes an optical waveguide having a surface; a first material formed on a portion of the surface of the optical waveguide; and a second material formed on a portion of the first material. The first material has light scattering properties.

公开(公告)号：US20210138802A1

公开(公告)日：2021-05-13

申请号：US16679215

申请日：2019-11-10

Applicant: Xerox Corporation

Inventor： Douglas K. Herrmann ,  Seemit Praharaj ,  Michael J. Levy ,  Jason M. Lefevre ,  Paul McConville ,  Chu-Heng Liu ,  Linn C. Hoover ,  David A. VanKouwenberg

IPC: B41J11/00

Abstract: A vacuum roller system and a method of operating the vacuum roller system can include a group of vacuum rollers operable to move a sheet of media through a dryer. The vacuum rollers do not require a vacuum to be drawn between the vacuum rollers. Each vacuum roller can include a plenum operable to direct the vacuum to a top portion of the vacuum roller to drive the sheet of media from one roller to the next roller. The plenum can engage vacuum holes in a rotating vacuum roller when the vacuum holes in the vacuum roller are aligned with the plenum.

公开(公告)号：US20200062007A1

公开(公告)日：2020-02-27

申请号：US16670124

申请日：2019-10-31

Applicant: Xerox Corporation

Inventor： Chu-Heng Liu ,  Douglas K. Herrmann ,  Paul J. McConville ,  Jason M. LeFevre ,  Seemit Praharaj

IPC: B41J11/00 ,  B41J3/54 ,  B41J11/04

Abstract: An aqueous ink printer includes two drying stages that enable coated substrates to be printed with aqueous ink images. The first drying stage dries substrates uniformly in the cross-process direction and the second drying stage dries substrates non-uniformly in the cross-process direction to enable only predetermined portions of the printed substrates to be dried. The predetermined portions of the printed substrates are aligned in a process direction with nip rollers or other printer components that engage the substrates after the substrates exit the second drying stage.

公开(公告)号：US10427421B1

公开(公告)日：2019-10-01

申请号：US15934346

申请日：2018-03-23

Applicant: Xerox Corporation

Inventor： Jason M. LeFevre ,  Paul J. McConville ,  Douglas K. Herrmann ,  Chu-Heng Liu ,  Seemit Praharaj

IPC: B41J11/00 ,  B41J13/08 ,  B41F23/04 ,  B41J3/54

Abstract: An aqueous ink printer includes a dryer that enables coated substrates to be printed with aqueous ink images. The dryer is configured to receive substrates from a first substrate transport and to hold a plurality of the substrates for a predetermined period of time to dry the aqueous ink images on the substrates before independently releasing each substrate in the plurality of substrates to a second substrate transport.

公开(公告)号：US10377147B2

公开(公告)日：2019-08-13

申请号：US15477631

申请日：2017-04-03

Applicant: Xerox Corporation

Inventor： Chu-Heng Liu ,  Paul J. McConville ,  Jason M. Lefevre ,  Douglas K. Herrmann

IPC: B25J9/14 ,  B25J15/00 ,  B41J3/407

Abstract: What is disclosed is an object holder for retaining an object in a direct-to-object print system and a direct-to-object print system configured to use various embodiments of the object holder of the present invention. In one embodiment, the object holder comprises a shuttle mount configured to slideably traverse a support member positioned parallel to a plane formed by the printhead. At least one collapsible membrane is attached to the shuttle mount. The membrane forms an airtight sack filled with granules. The membrane collapses at least partially around an object when a volume of air is withdrawn from the membrane by a vacuum pump. The vacuum pump withdrawing a volume of air from the membrane causes the membrane to collapse and tightly pack the granules inside the membrane. The vacuum-packed granules cause the membrane to conform to the shape of the object thereby securing the object to the shuttle mount.

公开(公告)号：US10331109B2

公开(公告)日：2019-06-25

申请号：US14945828

申请日：2015-11-19

Applicant: Xerox Corporation

Inventor： Chu-Heng Liu ,  David A. Mantell ,  Barry P. Mandel ,  Mandakini Kanungo

IPC: G05B19/4099 ,  B29C70/70 ,  B29C64/124 ,  B33Y50/02 ,  B33Y80/00 ,  B33Y10/00

Abstract: A three-dimensional object printer uses stereolithography to form a structure and then embed one or more objects in the structure. The printer includes a controller that operates a source of ultraviolet (UV) radiation to cure a portion of a liquid photopolymer at an interface between the liquid photopolymer and the external surface of an embedded object with reference to a meniscus formed between the liquid photopolymer and the external surface of an embedded object. The incorporation of the embedded object speeds formation of the final object and increases the durability of the final object.

公开(公告)号：US10154158B2

公开(公告)日：2018-12-11

申请号：US15477156

申请日：2017-04-03

Applicant: Xerox Corporation

Inventor： Paul J. McConville ,  Jason M. Lefevre ,  Chu-Heng Liu ,  Douglas K. Herrmann ,  Kelly Burton ,  Christopher Douglas Atwood ,  Elizabeth M. Crossen ,  Annie Liu

IPC: H04N1/00 ,  H04N1/387 ,  H04N1/393 ,  B41J3/407 ,  B41F17/00

Abstract: What is disclosed is system which facilitates the application of a mark to a surface of an object in a direct-to-object print system and a direct-to-object print system configured to use various embodiments of the present marking system. The present marking system comprises a camera for capturing an image of an object retained by an object holder configured to slideably traverse a support member positioned to be parallel to a plane formed by at least one printhead configured to eject in onto a surface of the object. A processor receives an image of an object held and communicates the image to a display. A mark to be printed on the object is retrieved and overlaid on the object in the image. A location of the overlaid mark is determined and communicated to a controller which causes the printhead to print the mark on the object at the location.