公开(公告)号：US20250065631A1

公开(公告)日：2025-02-27

申请号：US18453866

申请日：2023-08-22

Applicant: Xerox Corporation

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

IPC: B41J2/165 ,  B41J2/17 ,  B41J2/21 ,  B41J29/17

Abstract: An inkjet printer includes a waste ink treatment system and a humidification chamber to separate waste ink produced by a printhead maintenance station into solid ink pigment particles and a solvent stream and use the solvent stream to maintain inkjets in the printheads of the inkjet printer in operational status. The waste ink treatment system mixes the waste ink with a metal salt to precipitate the solid ink pigment particles out of the waste ink. The solvent stream remaining after the precipitation of the pigment particles is humidified and directed to air baffles positioned on opposite sides of each printhead in every other printhead module in the process direction. A kit is provided to retroactively modify an existing inkjet printer to treat the waste ink and use the solvent stream to maintain the operational status of the inkjets in the printheads of the inkjet printer.

公开(公告)号：US12219110B2

公开(公告)日：2025-02-04

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

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：US12157321B2

公开(公告)日：2024-12-03

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

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：US12053982B2

公开(公告)日：2024-08-06

申请号：US17932165

申请日：2022-09-14

Applicant: Xerox Corporation

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

IPC: B41J2/045

CPC classification number: B41J2/04558

Abstract: A method of operating a printer identifies image areas in ink image content data that are likely to affected by airflow disturbances to produce ink blur within an ink image. Inkjets farthest from these areas are selected to eject ink drops into these areas to form portions of an ink image. The image areas identified as being likely to produce ink blur are the leading edge, trailing edge, and side edge of the ink image content data. The ink drops ejected by these selected inkjets and their satellites are less likely to be affected adversely by the airflow disturbances.

公开(公告)号：US11230135B2

公开(公告)日：2022-01-25

申请号：US16405565

申请日：2019-05-07

Applicant: XEROX CORPORATION

Inventor： Varun Sambhy ,  Lin Ma ,  Kyle B. Tallman ,  Santokh S. Badesha ,  Michael S. Roetker ,  Mark C. Petropoulos ,  Jack T. LeStrange ,  Joseph C. Sheflin ,  Peter J. Knausdorf ,  Jorge A. Alvarez

IPC: B41N10/04 ,  B41F7/02 ,  B32B5/24 ,  B32B25/10 ,  B41C1/10 ,  B41F3/30 ,  B41J2/005 ,  B41M1/06 ,  B41N3/08

Abstract: The present disclosure is directed to a multilayer imaging blanket for a variable data lithography printing system, including: a multilayer base having a lower contacting surface configured to wrap around or to be mounted on a cylinder core of the variable data lithography printing system; and a platinum catalyzed fluorosilicone surface layer opposite the lower contacting surface; wherein the multilayer base is a sulfur-free carcass including: a top layer including a sulfur-free rubber substrate such as an ethylene propylene diene monomer (EPDM) rubber substrate, a bottom layer including the lower contacting surface; and a compressible layer disposed between the top layer and the bottom layer, the compressible layer being attached to a surface of the top layer opposite the platinum catalyzed fluorosilicone surface layer and a surface of the bottom layer opposite the lower contacting surface, optionally the top layer further comprises a reinforcing fabric layer, the reinforcing fabric layer attached to a surface of the compressible layer opposite the bottom layer.

公开(公告)号：US20180361661A1

公开(公告)日：2018-12-20

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 ,  B33Y30/00 ,  B29C64/393 ,  B33Y50/02 ,  B29C64/147

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：US10076881B2

公开(公告)日：2018-09-18

申请号：US15259773

申请日：2016-09-08

Applicant: Xerox Corporation

Inventor： Anthony S. Condello ,  Jack T. Lestrange ,  Jorge A. Alvarez

IPC: B29C67/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/112 ,  B29C64/245 ,  B29C64/386 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A method of forming a base for supporting a three-dimensionally printed object includes operating at least one ejector of a three-dimensional object printer to form the base. At least one ejector is operated to eject build material to form a planar layer of build material on a platen, and to form a first plurality of anchoring portions on the planar layer. At least one ejector is operated to eject support material to form a plurality of second anchoring portions interlocked with the first anchoring portions so that the first and second anchoring portions form a planar anchoring layer, and to form a planar layer of support material on the anchoring layer that defines a planar base for supporting a three-dimensional object.

公开(公告)号：US10005230B2

公开(公告)日：2018-06-26

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 ,  B29K105/00 ,  B33Y10/00 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B29C64/147 ,  B29C64/153 ,  B29C64/188 ,  B29C64/241 ,  B29C64/314 ,  B29K2091/00 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y50/02 ,  G03G15/1625 ,  G03G15/224

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.

公开(公告)号：US20180065323A1

公开(公告)日：2018-03-08

申请号：US15259773

申请日：2016-09-08

Applicant: Xerox Corporation

Inventor： Anthony S. Condello ,  Jack T. Lestrange ,  Jorge A. Alvarez

IPC: B29C67/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C67/0092 ,  B29C64/112 ,  B29C64/245 ,  B29C67/0059 ,  B29C67/0088 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A method of forming a base for supporting a three-dimensionally printed object includes operating at least one ejector of a three-dimensional object printer to form the base. At least one ejector is operated to eject build material to form a planar layer of build material on a platen, and to form a first plurality of anchoring portions on the planar layer. At least one ejector is operated to eject support material to form a plurality of second anchoring portions interlocked with the first anchoring portions so that the first and second anchoring portions form a planar anchoring layer, and to form a planar layer of support material on the anchoring layer that defines a planar base for supporting a three-dimensional object.