公开(公告)号：US20200282658A1

公开(公告)日：2020-09-10

申请号：US16878785

申请日：2020-05-20

Applicant: Xerox Corporation

Inventor： David A. Mantell

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/118 ,  B29C64/209 ,  B29C48/92 ,  B29C64/227

Abstract: An additive manufacturing system operates an extruder to extrude a swath of thermoplastic material through at least two nozzles of the extruder to form a swath of thermoplastic material along a path of relative movement between the extruder and a platform. The speed of the extruder along the path corresponds to a predetermined speed selected with reference to an orientation of the extruder and the angle for the path of relative movement between the extruder and the platform. A controller in the system operates at least one actuator operatively connected to at least one of the extruder and the platform to move the at least one of the extruder and the platform relative to the other of the extruder and the platform along the path of relative movement at the predetermined speed to make the swath of the thermoplastic material contiguous in a cross-process direction.

公开(公告)号：US10717298B1

公开(公告)日：2020-07-21

申请号：US16018404

申请日：2018-06-26

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Chu-Heng Liu ,  Seemit Praharaj ,  Stuart A. Schweid

IPC: B41J2/21 ,  B41J2/045 ,  B41J11/00 ,  B41J2/14

Abstract: A method of operating an inkjet printer that forms textual data with non-absorbing media ink on non-absorbing media forms the characters with structure that improves the integrity of the edges of the characters over previously known systems. The method includes modifying character pixels in image data used to generate firing signals for operating inkjets in a print head of an inkjet imaging device, generating firing signals for operating the inkjets from the modified character pixels, and operating the inkjets in the print head with the generated firing signals to eject drops of non-absorbing media ink onto non-absorbing media to form characters on the non-absorbing media. The character pixel modification reduces a number of character pixels in a connecting zone of a character that have a value that corresponds to a firing signal that activates an inkjet.

公开(公告)号：US10710298B2

公开(公告)日：2020-07-14

申请号：US16166618

申请日：2018-10-22

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Andrew W. Hays ,  Linn C. Hoover ,  Ron E. Dufort ,  Erwin Ruiz ,  Patrick J. Howe

IPC: B29C64/112 ,  B05B11/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00 ,  B33Y40/00 ,  B29C64/171 ,  B29C71/00 ,  B29C64/176 ,  B29C64/182 ,  B29C64/40 ,  B29C64/35 ,  B29C64/386 ,  B33Y50/02 ,  B29K105/16 ,  B29C35/08

Abstract: A system for producing three-dimensional objects forms fluid paths within the support structure to facilitate the removal of the support structure following manufacture of the object. The system includes a first ejector configured to eject a first material towards a platen to form an object, a second ejector configured to eject a second material towards the platen to form support for portions of the object, at least one portion of the support having a body with at least one fluid path that connects at least one opening in the body to at least one other opening in the body, and a fluid source that connects to the at least one fluid path of the support to enable fluid to flow through the at least one fluid path to remove at least an inner portion of the support from the object.

公开(公告)号：US10682816B2

公开(公告)日：2020-06-16

申请号：US15817588

申请日：2017-11-20

Applicant: Xerox Corporation

Inventor： David A. Mantell

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/118 ,  B29C64/209 ,  B29C48/92 ,  B29C64/227 ,  B29C48/05 ,  B29C64/112 ,  B29C48/345 ,  B29C48/25 ,  B29K55/02 ,  B29K67/00 ,  B29K77/00

Abstract: An additive manufacturing system operates an extruder to extrude a swath of thermoplastic material through at least two nozzles of the extruder to form a swath of thermoplastic material along a path of relative movement between the extruder and a platform. The speed of the extruder along the path corresponds to a predetermined speed selected with reference to an orientation of the extruder and the angle for the path of relative movement between the extruder and the platform. A controller in the system operates at least one actuator operatively connected to at least one of the extruder and the platform to move the at least one of the extruder and the platform relative to the other of the extruder and the platform along the path of relative movement at the predetermined speed to make the swath of the thermoplastic material contiguous in a cross-process direction.

公开(公告)号：US20200094474A1

公开(公告)日：2020-03-26

申请号：US16142702

申请日：2018-09-26

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Jason O'Neil ,  Christopher G. Lynn ,  Peter J. Nystrom

IPC: B29C64/209 ,  B29C64/393 ,  B29C64/118 ,  B29C64/40

Abstract: A method of operating a multi-nozzle extruder in an additive manufacturing system enables support structure to be formed while an object is also being formed. The method includes opening more than one nozzle in the multi-nozzle extruder, and operating an actuator with a controller to move the multi-nozzle extruder along a path to form a first group of multiple parallel ribbons of support structure simultaneously with material extruded from the more than one open nozzle.

公开(公告)号：US20190111614A1

公开(公告)日：2019-04-18

申请号：US16217502

申请日：2018-12-12

Applicant: Xerox Corporation

Inventor： Barry P. Mandel ,  James L. Giacobbi ,  Paul J. McConville ,  David A. Mantell ,  James J. Spence ,  James P. Calamita

IPC: B29C64/112 ,  B29C64/209 ,  B41J2/51 ,  B33Y50/02 ,  B29C64/20 ,  B33Y30/00 ,  B41J2/145 ,  B29C64/386 ,  B33Y10/00

CPC classification number: B29C64/112 ,  B29C64/20 ,  B29C64/209 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B41J2/145 ,  B41J2/51

Abstract: A printer is configured with at least two printheads that are separated from one another in a cross-process direction by an integral multiple of printhead widths. This configuration enables parallel swaths of material to be ejected and then movement of the printheads in the cross-process direction by a distance corresponding to one or more integral numbers of the printhead width enables the area between the swaths to be completed and the area outside of the original swaths printed.

公开(公告)号：US20190030805A1

公开(公告)日：2019-01-31

申请号：US15661810

申请日：2017-07-27

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Christopher G. Lynn ,  Mark A. Cellura ,  Peter J. Nystrom

IPC: B29C64/232 ,  B29C64/118 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/205

Abstract: A method for identifying an angular deviation in the orientation of a multi-nozzle extruder includes moving the multi-nozzle extruder in a first process direction to form a first extrusion material swath and moving the multi-nozzle extruder in a second process direction opposing the first process direction to form a second extrusion material swath. The method further includes identifying widths and heights of the swaths from scanned image data and identifying a component of angular deviation for the multi-nozzle extruder with reference to at least one of a difference between the first swath width and the second swath width and another difference between the first swath height and the second swath height.

公开(公告)号：US20180244035A1

公开(公告)日：2018-08-30

申请号：US15966458

申请日：2018-04-30

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  David C. Craig ,  Jonathan B. Hunter ,  Douglas E. Proctor

IPC: B33Y50/02

CPC classification number: B29C64/386 ,  B29C64/00 ,  B29C64/112 ,  B29C64/20 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y50/02 ,  G01B11/00 ,  H04N1/00827 ,  H04N1/02805 ,  H04N1/02895 ,  H04N1/03

Abstract: A three-dimensional object printer generates image data of an object being formed in the printer with an optical sensor and identifies the heights of object features above a substrate on which the object is being formed. A controller operates one or more actuators to move the optical sensor at a plurality of distances above the object to generate image data of the object at a plurality of heights above the object. The controller identifies the distances of the features of the object with reference to the image data generated by the optical sensor and the focal length of the optical sensor.

公开(公告)号：US20180111336A1

公开(公告)日：2018-04-26

申请号：US15334779

申请日：2016-10-26

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Peter J. Nystrom ,  Christopher G. Lynn

IPC: B29C67/00 ,  B29C47/86 ,  B29C47/80 ,  B29C47/08 ,  B33Y10/00 ,  B33Y30/00

Abstract: An apparatus changes the temperature of thermoplastic material in an extruder head to reduce the time for producing an object. The apparatus includes a cooling device located near the one or more nozzles of the extruder head to change the temperature of the thermoplastic material extruded by the extruder head. The apparatus cools the thermoplastic material to enhance the formation of exterior object features. A heater can also be positioned near the nozzle zone to heat the thermoplastic material to reduce the time for raising the viscosity of the thermoplastic material for forming interior regions of the object.

公开(公告)号：US20180099459A1

公开(公告)日：2018-04-12

申请号：US15289448

申请日：2016-10-10

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Stuart A. Schweid

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

Abstract: A method for operating a three-dimensional object printer compensates for inoperative ejectors. The method identifies image data values associated with an inoperative ejector that stored in a memory with other image data values for a three-dimensional object to be printed by the three-dimensional object printer. The method replaces the image data values associated with the inoperative ejector with image data values associated with an operative ejector that correspond to a material that is different than a material ejected by the inoperative ejector and operates a plurality of ejectors with reference to the other image data values and the replaced image data values to enable the operative ejector to eject drops of the material that is different than the material ejected by the inoperative ejector into the three-dimensional object at positions where the inoperative ejector would have ejected material.