公开(公告)号：US20240253363A1

公开(公告)日：2024-08-01

申请号：US18163154

申请日：2023-02-01

Applicant: Xerox Corporation

Inventor： Douglas K. Herrmann ,  Seemit Praharaj ,  Jason M. LeFevre ,  Jorge A. Alvarez ,  Chu-Heng Liu

IPC: B41J2/21

CPC classification number: B41J2/2132

Abstract: An inkjet printer prints on a first side of a media sheet less than all of the color separations in an image, generates a first set of image data of the printed color separations to identify image features, returns the partially printed media sheet to a position that precedes the print zone in the printer, generates a second set of image data of the partially printed media sheet before it reenters the print zone to identify the image features, compares the positions of the image features in the first set of image data to the positions of the image features in the second set of image data to register one or more color separations remaining to be printed with the color separations printed on the first side of the media sheet, and prints the remaining registered color separations on the first side of the partially printed media sheet.

公开(公告)号：US20230398778A1

公开(公告)日：2023-12-14

申请号：US17806212

申请日：2022-06-09

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Jason M. LeFevre ,  Seemit Praharaj ,  Chu-Heng Liu ,  Douglas K. Herrmann

IPC: B41J2/125 ,  G06T7/00 ,  G06T7/13

CPC classification number: B41J2/125 ,  G06T2207/30144 ,  G06T7/13 ,  G06T7/0004

Abstract: A method of operating a printer identifies image areas and image features in ink image content data that are likely to produce ink blur within an ink image. The ink image content data for these areas and features is modified to attenuate the appearance of ink blur. The image areas identified as being likely to produce ink blur are the trailing edge and the side edges of the ink image content data. The modification of the ink image content data for the features and predetermined areas improves the quality of the printed ink image.

公开(公告)号：US10688717B2

公开(公告)日：2020-06-23

申请号：US16112852

申请日：2018-08-27

Applicant: Xerox Corporation

Inventor： William J. Nowak ,  Jorge A. Alvarez ,  Robert A. Clark ,  Michael F. Zona ,  Chu-heng Liu ,  Paul J. McConville

IPC: B29C64/165 ,  B29C64/147 ,  G03G15/22 ,  G03G15/16 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393

Abstract: A 3-D printer includes build and support material development stations that electrostatically transfer build material and support material to an ITB. The ITB transfers a layer of build and support material to a platen each time the platen contacts one of the layers on the ITB, to successively form a freestanding stack of the layers on the platen. A sensor is positioned to generate a topographic measurement of the layer on the platen, and an aerosol applicator is positioned to propel build and support material on to the layer on the platen. The aerosol applicator controls the build and support material being propelled, based on the topographic measurement from the sensor through a feedback loop, to adjust the amount and location of the build material and the support material propelled on to the layer, and thereby control the flatness of surface topology of the layers in the freestanding stack on the platen.

公开(公告)号：US20190217535A1

公开(公告)日：2019-07-18

申请号：US16366298

申请日：2019-03-27

Applicant: XEROX CORPORATION

Inventor： Michael F. Zona ,  William J. Nowak ,  Jorge A. Alvarez ,  Paul J. McConville ,  Robert A. Clark

IPC: B29C64/153 ,  B29C64/223 ,  B29C64/241 ,  G03G15/22 ,  G03G15/00 ,  B33Y40/00 ,  B33Y10/00 ,  B29C64/40 ,  B29C64/357 ,  B33Y30/00

CPC classification number: B29C64/153 ,  B29C64/223 ,  B29C64/241 ,  B29C64/357 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  G03G15/00 ,  G03G15/224

Abstract: A method of additive manufacturing includes forming a plurality of build layers, each of the plurality of build layers formed by transferring a first build material having a first particle size to form a first build material and transferring a second build material on the first build material to form one of the plurality of build layers, a particle size of the second build material is smaller than the first build material and each transfer step is performed by a xerographic engine. Each transfer step is involves transfer to a conveyor which can take the form of a belt or drum.

公开(公告)号：US10293547B2

公开(公告)日：2019-05-21

申请号：US15176040

申请日：2016-06-07

Applicant: Xerox Corporation

Inventor： Robert A. Clark ,  Michael F. Zona ,  William J. Nowak ,  Chu-heng Liu ,  Jorge A. Alvarez ,  Paul J. McConville

IPC: B29C64/188 ,  B29C64/393 ,  B29C64/141 ,  B29C64/40 ,  G05B19/4099 ,  G03G15/16 ,  G03G15/22 ,  B33Y10/00 ,  B29C64/106 ,  B29C64/20 ,  B29C64/214 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B29K105/00 ,  B29C64/223

Abstract: A three-dimensional (3-D) printer includes build and support material development stations positioned to transfer layers of build and support materials to an intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to a platen each time the platen contacts the intermediate transfer surface. A sensor detects the thickness of the layer on the platen, and a mechanical planer is positioned to contact and level the layer on the platen as the platen moves past the mechanical planer. Additionally, a feedback loop is electrically connected to the sensor and the mechanical planer. The mechanical planer adjusts the amount of the build material and the support material removed from the layer based on the thickness of the layer on the platen, as determined by the sensor.

公开(公告)号：US10183443B2

公开(公告)日：2019-01-22

申请号：US15150601

申请日：2016-05-10

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Michael F. Zona ,  William J. Nowak ,  Robert A. Clark ,  Chu-heng Liu ,  Paul J. McConville

IPC: B29C64/153 ,  G05B19/4099 ,  B29C64/165 ,  B29C64/393 ,  B29C64/241 ,  B29C64/314 ,  B29C64/188 ,  B33Y30/00

Abstract: 3-D printers include an intermediate transfer surface that transfers a layer of material to a platen each time the platen contacts the intermediate transfer surface to successively form a freestanding stack of layers of the material on the platen. A sensor detects the thickness of the layer on the platen after a fusing station fuses the layer. A feedback loop is electrically connected to the sensor and a development station (that includes a photoreceptor, a charging station providing a static charge to the photoreceptor, a laser device exposing the photoreceptor, and a development device supplying the material to the photoreceptor). The development station adjusts the development bias of the development device, based on a layer thickness measurement from the sensor through the feedback loop, to control the thickness of subsequent ones of the layers transferred from the intermediate transfer surface to the freestanding stack on the platen.

公开(公告)号：US10005228B2

公开(公告)日：2018-06-26

申请号：US15150585

申请日：2016-05-10

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Michael F. Zona ,  William J. Nowak ,  Robert A. Clark ,  Chu-heng Liu ,  Paul J. McConville

IPC: B29C64/264 ,  G03G15/00 ,  B29C65/78 ,  B29C65/00 ,  B29C64/393 ,  B29C64/40

CPC classification number: B29C64/264 ,  B29C64/153 ,  B29C64/223 ,  B29C64/393 ,  B29C64/40 ,  B29C65/7852 ,  B29C66/954 ,  B33Y10/00 ,  B33Y30/00 ,  G03G15/00 ,  G03G15/043 ,  G03G15/1625 ,  G03G15/224 ,  G03G15/5062 ,  G03G15/556

Abstract: 3-D printers include an intermediate transfer surface that transfers a layer of material to a platen each time the platen contacts the intermediate transfer surface to successively form a freestanding stack of layers of the material on the platen. A sensor detects the thickness of the layer on the platen after a fusing station fuses the layer. A feedback loop is electrically connected to the sensor and a development station (that includes a photoreceptor, a charging station providing a static charge to the photoreceptor, a laser device exposing the photoreceptor, and a development device supplying the material to the photoreceptor). The exposure device adjusts the intensity of light exposed on the photoreceptor, based on a layer thickness measurement from the sensor through the feedback loop, to control the thickness of subsequent ones of the layers transferred from the intermediate transfer surface to the freestanding stack on the platen.

公开(公告)号：US20170326797A1

公开(公告)日：2017-11-16

申请号：US15150585

申请日：2016-05-10

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Michael F. Zona ,  William J. Nowak ,  Robert A. Clark ,  Chu-heng Liu ,  Paul J. McConville

IPC: B29C64/264 ,  G03G15/00 ,  B29C64/40 ,  B29C64/393 ,  B29C65/78 ,  B29C65/00

CPC classification number: B29C64/264 ,  B29C64/153 ,  B29C64/223 ,  B29C64/393 ,  B29C64/40 ,  B29C65/7852 ,  B29C66/954 ,  B33Y10/00 ,  B33Y30/00 ,  G03G15/00 ,  G03G15/043 ,  G03G15/1625 ,  G03G15/225 ,  G03G15/5062 ,  G03G15/556

Abstract: 3-D printers include an intermediate transfer surface that transfers a layer of material to a platen each time the platen contacts the intermediate transfer surface to successively form a freestanding stack of layers of the material on the platen. A sensor detects the thickness of the layer on the platen after a fusing station fuses the layer. A feedback loop is electrically connected to the sensor and a development station (that includes a photoreceptor, a charging station providing a static charge to the photoreceptor, a laser device exposing the photoreceptor, and a development device supplying the material to the photoreceptor). The exposure device adjusts the intensity of light exposed on the photoreceptor, based on a layer thickness measurement from the sensor through the feedback loop, to control the thickness of subsequent ones of the layers transferred from the intermediate transfer surface to the freestanding stack on the platen.

公开(公告)号：US20170326788A1

公开(公告)日：2017-11-16

申请号：US15150601

申请日：2016-05-10

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Michael F. Zona ,  William J. Nowak ,  Robert A. Clark ,  Chu-heng Liu ,  Paul J. McConville

IPC: B29C64/153 ,  G05B19/4099 ,  B29C64/165 ,  B29C64/393 ,  B33Y30/00 ,  B29K105/00 ,  B33Y50/02

CPC classification number: B29C64/153 ,  B29C64/165 ,  B29C64/188 ,  B29C64/241 ,  B29C64/314 ,  B29C64/393 ,  B33Y30/00 ,  G03G15/1625 ,  G03G15/224 ,  G05B19/4099 ,  G05B2219/35134 ,  G05B2219/49007

Abstract: 3-D printers include an intermediate transfer surface that transfers a layer of material to a platen each time the platen contacts the intermediate transfer surface to successively form a freestanding stack of layers of the material on the platen. A sensor detects the thickness of the layer on the platen after a fusing station fuses the layer. A feedback loop is electrically connected to the sensor and a development station (that includes a photoreceptor, a charging station providing a static charge to the photoreceptor, a laser device exposing the photoreceptor, and a development device supplying the material to the photoreceptor). The development station adjusts the development bias of the development device, based on a layer thickness measurement from the sensor through the feedback loop, to control the thickness of subsequent ones of the layers transferred from the intermediate transfer surface to the freestanding stack on the platen.

公开(公告)号：US12070945B2

公开(公告)日：2024-08-27

申请号：US17806212

申请日：2022-06-09

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Jason M. LeFevre ,  Seemit Praharaj ,  Chu-Heng Liu ,  Douglas K. Herrmann

IPC: G06T7/13 ,  B41J2/125 ,  B41J2/21 ,  G06T7/00

CPC classification number: B41J2/125 ,  B41J2/2132 ,  G06T7/0004 ,  G06T7/13 ,  G06T2207/30144

Abstract: A method of operating a printer identifies image areas and image features in ink image content data that are likely to produce ink blur within an ink image. The ink image content data for these areas and features is modified to attenuate the appearance of ink blur. The image areas identified as being likely to produce ink blur are the trailing edge and the side edges of the ink image content data. The modification of the ink image content data for the features and predetermined areas improves the quality of the printed ink image.