公开(公告)号：US12023921B2

公开(公告)日：2024-07-02

申请号：US17477417

申请日：2021-09-16

Applicant: Xerox Corporation

Inventor： Peter Knausdorf ,  Jack T. Lestrange ,  Palghat S. Ramesh ,  Joseph C. Sheflin ,  Anthony S. Condello

IPC: B41J2/045 ,  H04N1/00 ,  H04N1/409 ,  H04N1/58 ,  H04N1/60 ,  B41J2/21

CPC classification number: B41J2/04508 ,  B41J2/04586 ,  H04N1/0044 ,  H04N1/4092 ,  H04N1/58 ,  H04N1/6097 ,  B41J2/2114

Abstract: An MFD is disclosed. For example, the MFD includes a printhead to dispense print material, an enhancement printhead to dispense an enhancement printing fluid, a processor and a non-transitory computer-readable medium storing a plurality of instructions. The instructions when executed by the processor cause the processor to perform operations that include determining that an automated enhancement feature was selected, analyzing each pixel of an image to be printed to determine one or more pixels that are to receive the enhancement printing fluid, controlling the printhead to print the image, and controlling the enhancement printhead to dispense the enhancement printing fluid on the one or more pixels that are to receive the enhancement printing fluid.

公开(公告)号：US11760086B2

公开(公告)日：2023-09-19

申请号：US17485731

申请日：2021-09-27

Applicant: Xerox Corporation

Inventor： Joseph C. Sheflin ,  Palghat S. Ramesh ,  Anthony S. Condello ,  Jack T. LeStrange ,  Peter Knausdorf

IPC: B41J2/045 ,  B41J11/00 ,  B41J2/21

CPC classification number: B41J2/0456 ,  B41J2/04586 ,  B41J2/2103 ,  B41J11/0015

Abstract: A method of operating a printer separates the image content data for a sheet in a print job into multiple color separations and operates a digital air curtain between the printhead modules that print the multiple color separations. Image data of the printed color separations are used to adjust operating parameters for the digital air curtain.

公开(公告)号：US11697296B2

公开(公告)日：2023-07-11

申请号：US17216175

申请日：2021-03-29

Applicant: XEROX CORPORATION

Inventor： Douglas K. Herrmann ,  Linn C. Hoover ,  Patrick Jun Howe ,  Joseph C. Sheflin ,  Robert Jian Zhang ,  John Patrick Baker ,  Brian M. Balthasar ,  Glenn Batchelor ,  Anthony Salvatore Condello ,  Ali R. Dergham ,  Timothy P. Foley ,  Richard A. Kalb ,  Peter John Knausdorf ,  Jason M. LeFevre ,  Jack T. Lestrange ,  Chu-Heng Liu ,  Paul J. McConville ,  Seemit Praharaj ,  Palghat S. Ramesh ,  Erwin Ruiz ,  Emmett James Spence ,  Rachel Lynn Tanchak ,  Kareem Tawil ,  Carlos M. Terrero ,  Megan Zielenski

IPC: B41J29/38 ,  B41J11/00

CPC classification number: B41J11/0085

Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device comprises a movable support surface to transport a print medium along a process direction through the deposition region, the media transport device holding the print medium against the movable support surface by vacuum suction. The air flow control system is arranged to selectively flow air through the opening of the carrier plate between the carrier plate and the printhead based on a location of a print medium transported by the media transport device relative to the printhead.

公开(公告)号：US20230150026A1

公开(公告)日：2023-05-18

申请号：US17455590

申请日：2021-11-18

Applicant: Xerox Corporation

Inventor： Joseph C. Sheflin ,  Chu-Heng Liu ,  Paul J. McConville ,  Peter Knausdorf ,  Alexander J. Fioravanti ,  Palghat S. Ramesh

IPC: B22F10/22 ,  B33Y10/00 ,  B33Y30/00 ,  B22D23/00 ,  B33Y50/02 ,  B22F10/85

CPC classification number: B22F10/22 ,  B33Y10/00 ,  B33Y30/00 ,  B22D23/003 ,  B33Y50/02 ,  B22F10/85

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is configured to eject melted metal drops from an ejector head at different velocities to form different portions of metal object layers with different measurable values of a same physical property. The different velocities are achieved by operating the ejector head with two different electrical voltages. The greater voltage that achieves the higher velocity is about 25% greater than the voltage used to achieve the lesser velocity. By operating the ejector head with the two different voltages different portions of the object can be formed with different physical property characteristics.

公开(公告)号：US20230012088A1

公开(公告)日：2023-01-12

申请号：US17371391

申请日：2021-07-09

Applicant: XEROX CORPORATION

Inventor： Jason M. LeFevre ,  Joseph C. Sheflin ,  Palghat S. Ramesh

IPC: B22F10/32 ,  B22F10/22 ,  B22F10/368 ,  B22F12/17 ,  B22F12/33 ,  B22F12/53 ,  B22F12/41 ,  B22F12/70 ,  B22F12/90

Abstract: A printer includes a heat control device configured to prevent a temperature of a part that is printed by the printer from decreasing by more than about 5° C. as a height of the part increases from about 0 mm to about 30 mm. The heat control device includes a gas curtain source that is configured to generate a gas curtain that at least partially surrounds at least a portion of the part.

公开(公告)号：US10800196B2

公开(公告)日：2020-10-13

申请号：US15962063

申请日：2018-04-25

Applicant: Xerox Corporation

Inventor： Jack T. Lestrange ,  Peter J. Knausdorf ,  Joseph C. Sheflin

IPC: B41N3/08 ,  B41M1/06 ,  B41F31/18 ,  B41F7/02

Abstract: An intermediate roller positioned between a fountain solution vapor supply and an imaging member decouples fountain solution vapor deposition from the surface of the imaging member. The intermediate roller may be temperature controlled. A uniform layer of fountain solution condenses onto the surface of the temperature controlled intermediate roller regardless of the imaging blanket temperature. The fountain solution condensate layer deposited onto the intermediate roller splits and deposits a thin uniform layer of fountain solution liquid onto the imaging member surface. This liquid layer split may be independent of the temperature of the imaging member surface, resulting in a uniform layer of fountain solution on the imaging blanket for better imaging quality. Remotely locating the vaporizing chamber away from the imaging member prevents undesired heat transfer from a hot vaporizing chamber/baffle to the imaging member surface.

公开(公告)号：US11890863B2

公开(公告)日：2024-02-06

申请号：US17218849

申请日：2021-03-31

Applicant: XEROX CORPORATION

Inventor： Anthony Salvatore Condello ,  Peter John Knausdorf ,  Jack T. Lestrange ,  Palghat S. Ramesh ,  Joseph C. Sheflin

IPC: B41J11/00 ,  B41J11/06 ,  B65H5/04 ,  B65H5/22

CPC classification number: B41J11/0085 ,  B41J11/007 ,  B41J11/06 ,  B65H5/04 ,  B65H5/222

Abstract: A printing system comprises an ink deposition assembly and a media transport device. The ink deposition assembly comprises printheads to deposit a print fluid, such as ink, on print media, such as paper. The media transport device holds the print media against a movable support surface, such as a belt, by vacuum suction platen and transports the print media though a deposition region. The vacuum suction is communicated to the movable through platen holes and platen channels in a vacuum platen. At least some of the platen channels have a high impedance region that has a reduced open cross-sectional area as compared to another region of the platen channel.

公开(公告)号：US11801674B2

公开(公告)日：2023-10-31

申请号：US17149161

申请日：2021-01-14

Applicant: Xerox Corporation

Inventor： Anthony S. Condello ,  Jack T. Lestrange ,  Joseph C. Sheflin ,  Brian M. Balthasar ,  Palghat S. Ramesh

IPC: B41F31/13 ,  B41F33/00

CPC classification number: B41F31/13 ,  B41F33/0063

Abstract: An optical gloss meter above an imaging member surface measures fountain solution surface gloss on the imaging member surface in real-time during a printing operation. The measured gloss corresponds to a thickness of the fountain solution layer and may be used in a feedback loop to actively control fountain solution layer thickness by adjusting the volumetric feed rate of fountain solution added onto the imaging member surface during a printing operation to reach a desired uniform thickness for the printing. This fountain solution monitoring system may be fully automated.

公开(公告)号：US11794251B2

公开(公告)日：2023-10-24

申请号：US17147773

申请日：2021-01-13

Applicant: Xerox Corporation

Inventor： Jason M. LeFevre ,  Joseph C. Sheflin ,  Paul J. McConville ,  Joshua Hilton

IPC: B22F10/22 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/53 ,  B22F10/85 ,  B29C64/371 ,  B33Y10/00 ,  B22D23/00

CPC classification number: B22F10/22 ,  B22D23/003 ,  B22F10/85 ,  B22F12/53 ,  B29C64/371 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F2301/052

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is equipped with a removable vessel to reduce the time required for start-up procedures after the printer is serviced. The removable vessel is filled with solid metal that is heated to its melting temperature before the bulk wire is inserted into the vessel to commence printing operations. The melting of the solid metal in the removable vessel requires less time that the melting of an length of bulk wire adequate to produce a volume of melted metal suitable for printer operation. The solid metal in the removable vessel can be metal pellets, metal powder, or a solid metal insert.

公开(公告)号：US20230226614A1

公开(公告)日：2023-07-20

申请号：US17648490

申请日：2022-01-20

Applicant: Xerox Corporation

Inventor： Viktor Sukhotskiy ,  Joseph C. Sheflin ,  Brian M. Balthasar ,  Peter Knausdorf ,  Chu-Heng Liu

IPC: B22F12/53 ,  B22F10/30 ,  B08B1/00

CPC classification number: B22F12/53 ,  B22F10/30 ,  B08B1/008 ,  B33Y40/00

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is equipped with an orifice cleaning system that removes metal drops that have adhered to a plate, an orifice in the plate, and a nozzle ejecting melted metal drops through the orifice during object forming operations. The orifice cleaning system includes an orifice cleaning tool that consists essentially of a soft carbon material, such as graphite. The orifice cleaning tool is configured with a handle that is gripped by an articulated arm to move the orifice cleaning tool against the plate, the orifice, and a portion of the nozzle at the orifice.