公开(公告)号：US10442174B2

公开(公告)日：2019-10-15

申请号：US14962132

申请日：2015-12-08

Applicant: XEROX CORPORATION

Inventor： Peter J Nystrom ,  Barry P Mandel ,  David A Mantell

IPC: B33Y10/00 ,  B33Y30/00 ,  B29C64/112 ,  B29C64/20

Abstract: A 3D printer including a pin actuated printhead having an orifice through which a material is ejected, a material chamber to hold the material to be ejected, a channel connecting the material chamber to the orifice, a pin chamber, and an actuated pin within the pin chamber, wherein the actuated pin extends through the pin chamber to eject the material from the orifice. The printhead is configured to eject a material with a viscosity of 10,000 cP or more at an elevated temperature. The 3D printer further includes a material delivery system having a filament driver and a filament heater.

公开(公告)号：US11794255B2

公开(公告)日：2023-10-24

申请号：US17159975

申请日：2021-01-27

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： David A Mantell ,  Christopher T. Chungbin ,  Daniel Cormier ,  David G. Tilley ,  Walter Hsiao ,  PriyaankaDevi Guggilapu ,  Michael F. Dapiran ,  Dinesh Krishna Kumar Jayabal

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

CPC classification number: B22F10/85 ,  B22F10/22 ,  B22F12/53 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is operated to form sloping surfaces having a slope angle of more than 45° from a line that is perpendicular to the structure on which the layer forming the slope surface is formed. The angle corresponds to a step-out distance from the perpendicular line and a maximum individual step-out distance determined from empirically derived data. Multiple passes of an ejection head of the apparatus can be performed within a layer to form a sloped edge and the mass of the sloped structure is distributed within the sloped edge so the edge is formed without defects.

公开(公告)号：US11884011B2

公开(公告)日：2024-01-30

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: B29C64/40 ,  B29C64/209 ,  B29C64/393 ,  B29C64/118 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B29C64/209 ,  B29C64/118 ,  B29C64/393 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

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.