公开(公告)号：US20190210279A1

公开(公告)日：2019-07-11

申请号：US16352974

申请日：2019-03-14

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 ,  G03G15/16 ,  G05B19/4099 ,  G03G15/22 ,  B33Y10/00 ,  B29C64/20 ,  B29C64/141 ,  B29C64/393 ,  B29C64/40 ,  B29C64/214 ,  B29C64/106

CPC classification number: B29C64/188 ,  B29C64/106 ,  B29C64/141 ,  B29C64/20 ,  B29C64/214 ,  B29C64/223 ,  B29C64/393 ,  B29C64/40 ,  B29K2105/251 ,  B29K2995/001 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  G03G15/1605 ,  G03G15/224 ,  G05B19/4099 ,  G05B2219/35134 ,  G05B2219/49007

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：US20170368744A1

公开(公告)日：2017-12-28

申请号：US15194419

申请日：2016-06-27

Applicant: XEROX CORPORATION

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

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

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：US20170348906A1

公开(公告)日：2017-12-07

申请号：US15173777

申请日：2016-06-06

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 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393

CPC classification number: B29C64/165 ,  B29C64/147 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  G03G15/1625 ,  G03G15/224

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：US20250083443A1

公开(公告)日：2025-03-13

申请号：US18462790

申请日：2023-09-07

Applicant: Xerox Corporation

Inventor： Jorge A. Alvarez ,  Seemit Praharaj ,  Jason M. LeFevre ,  Anthony S. Condello ,  Douglas K. Herrmann

IPC: B41J2/17 ,  B41J2/165 ,  B41J2/175

Abstract: An inkjet printer uses ink supply containers that includes bladders for holding waste fluids produced by printhead maintenance stations. The bladders are connected serially or in parallel to the output ports of the printhead maintenance stations to store waste fluids within the bladders of the ink supply containers. As the ink supply containers are depleted of their supply ink, they are replaced and new ink supply containers having bladders within them are installed to renew the capacity of the printer to store waste fluids. In two embodiments, the need for a waste fluid reservoir is eliminated and in a third embodiment, the operational life of a waste fluid reservoir is extended. In all of these embodiments, the production of plastic waste by the printer is reduced.

公开(公告)号：US12151489B2

公开(公告)日：2024-11-26

申请号：US17816488

申请日：2022-08-01

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Jason Lefevre ,  Douglas K. Herrmann ,  Jorge A. Alvarez ,  Chu-Heng Liu ,  Yumeng Wu

IPC: B41J29/377 ,  B41J3/60 ,  B41J11/00 ,  B41J11/42

Abstract: Disclosed is a system and method for cooling paper within a printer assembly that includes at least one misting assembly designed to mist an aqueous solution onto an unprinted surface of paper stock after a first side is printed. At least one convection accelerator assembly is designed to accelerate evaporation of the aqueous solution before the printed paper stock arrives at the at least one printing station for printing on the unprinted surface. At least one or more of a paper temperature, machine temperature, printhead temperature, and humidity sensor are operationally coupled to at least one controller assembly programmed to control at least one or more of misting, humidity, and airflow. The at least one controller assembly is designed to determine the heat to be dissipated into the airflow from the printed paper stock to obtain a targeted paper temperature and, therefore, the amount and placement of aqueous solution misted.

公开(公告)号：US20240015258A1

公开(公告)日：2024-01-11

申请号：US17859901

申请日：2022-07-07

Applicant: Xerox Corporation

Inventor： Chu-heng Liu ,  Jorge A. Alvarez ,  Douglas L. Herrmann ,  Jason Matthew LeFevre ,  Seemit Praharaj

IPC: H04N1/32 ,  G06K15/10

CPC classification number: H04N1/32256 ,  G06K15/102

Abstract: Methods and systems for securely rendering a security feature with image data to be printed, can involve providing within the image data, data relating to a group of spots, and within the image data, mixing spots of two or more spot sizes among the group of spots to embed information within a stochastic or frequency modulation halftone image. In an embodiment, operations may be implemented for rendering a part of the image with a first spot among the group of spots and a remaining portion of the image with a second spot among the group of spots, wherein the second spot is smaller in size than the first spot.

公开(公告)号：US20230286305A1

公开(公告)日：2023-09-14

申请号：US17690937

申请日：2022-03-09

Applicant: Xerox Corporation

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

IPC: B41J29/377 ,  B23Q11/10

CPC classification number: B41J29/377 ,  B23Q11/10

Abstract: A multi-sheet cooling buffer suitable for use in a printing device and a method of sheet processing with the cooling buffer are described. The cooling buffer includes an inlet and an outlet and a sheet cooling mechanism. An array of cooling stations, intermediate the inlet and the outlet, are each configured to receive print media sheets independently from the inlet and direct cooled sheets towards the outlet. In the cooling buffer, multiple print media sheets are able to be cooled contemporaneously in respective ones of the cooling stations.

公开(公告)号：US10076869B2

公开(公告)日：2018-09-18

申请号：US15175476

申请日：2016-06-07

Applicant: Xerox Corporation

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

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

CPC classification number: B29C64/188 ,  B29C64/106 ,  B29C64/20 ,  B29C64/214 ,  B29C64/223 ,  B29C64/393 ,  B29C64/40 ,  B29K2105/251 ,  B29K2995/001 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G03G15/1605 ,  G03G15/1625 ,  G03G15/224 ,  G03G15/225

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. A platen having a flat surface is positioned to contact the intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to the flat surface of the platen as the platen contacts one of the layers on the intermediate transfer surface. A dispenser is positioned to deposit a leveling material on the layer on the platen, and a mechanical planer is positioned to contact and level the leveling material on the layer on the platen to make the top of the leveling material parallel to the flat surface of the platen.

公开(公告)号：US20170348909A1

公开(公告)日：2017-12-07

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 ,  B29C64/40 ,  B29C64/393 ,  B29C64/141 ,  G05B19/4099 ,  B33Y50/02 ,  B33Y40/00 ,  B33Y30/00 ,  B29K105/00

CPC classification number: B29C64/188 ,  B29C64/106 ,  B29C64/141 ,  B29C64/20 ,  B29C64/214 ,  B29C64/223 ,  B29C64/393 ,  B29C64/40 ,  B29K2105/251 ,  B29K2995/001 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  G03G15/1605 ,  G03G15/224 ,  G05B19/4099 ,  G05B2219/35134 ,  G05B2219/49007

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：US20170326805A1

公开(公告)日：2017-11-16

申请号：US15150614

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: B29C64/393 ,  B29C64/147 ,  B29K91/00 ,  B33Y50/02 ,  B29K105/00 ,  B33Y10/00

CPC classification number: B29C64/393 ,  B29C64/147 ,  B29C64/153 ,  B29C64/188 ,  B29C64/241 ,  B29C64/314 ,  B29K2091/00 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y50/02

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 transfer 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.