公开(公告)号：US10814544B2

公开(公告)日：2020-10-27

申请号：US15334851

申请日：2016-10-26

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Peter J. Nystrom ,  Christopher G. Lynn ,  Jun Ma ,  Mark A. Cellura ,  Gary D. Redding

IPC: B29C48/80 ,  B29C48/00 ,  B29C48/29 ,  B29C48/36 ,  B29C64/106 ,  B29C48/92 ,  B29C64/295 ,  B29C64/209 ,  B33Y70/00 ,  B33Y30/00 ,  B29K101/12

Abstract: An apparatus includes a heater for converting a filament of extrusion material into thermoplastic material. The heater has a channel configured to change the cross-sectional shape of the filament to a cross-sectional shape that has a greater surface area than the surface area of the filament before the heater receives the filament. The channel of the heater can also be configured to drive the center portion of the filament toward the heated walls of the channel and to mix thermoplastic material in the channel while exposing the center portion of the filament to the heated wall of the channel.

公开(公告)号：US20200307081A1

公开(公告)日：2020-10-01

申请号：US16366041

申请日：2019-03-27

Applicant: Xerox Corporation

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

IPC: B29C64/209 ,  B29C64/118 ,  B29C64/321

Abstract: An additive manufacturing system opens the valves in an extruder needed to form a swath and operates an actuator to move the extruder through a transition region with those valves open to establish an amount of extrusion material between a faceplate of the extruder and a portion of an object being formed that is adequate for formation of a swath. The length of the transition region is determined with reference to a viscosity of the material being extruded and a speed at which the extruder is moved to form the swath. The transition region can be perpendicular to a path of the extruder to form the swath or aligned with the path of the extruder to form the swath.

公开(公告)号：US20200282759A1

公开(公告)日：2020-09-10

申请号：US16296045

申请日：2019-03-07

Applicant: XEROX CORPORATION

Inventor： Varun Sambhy ,  Gary D. Redding ,  Santokh S. Badesha ,  Peter J. Nystrom ,  Lina Bian

IPC: B41N10/04 ,  B41F3/34 ,  B41C1/10

Abstract: An imaging blanket comprises a base comprising an elastic polymer and sulfur. A barrier layer is on the base and a surface layer is on the barrier layer. The surface layer comprises an elastomer and a platinum catalyst.

公开(公告)号：US10682796B2

公开(公告)日：2020-06-16

申请号：US15334721

申请日：2016-10-26

Applicant: Xerox Corporation

Inventor： Barry P. Mandel ,  Peter J. Nystrom ,  Christopher G. Lynn ,  Robert A. Clark ,  David A. Mantell

IPC: B29C48/255 ,  B29C64/386 ,  B29C48/92 ,  B29C64/209 ,  B29C64/343 ,  B29C64/321 ,  B29C64/118 ,  B29C64/241 ,  B29C64/295 ,  B29C48/25 ,  B29C48/80 ,  B29C64/106 ,  B33Y10/00 ,  B33Y30/00 ,  B29K101/12

Abstract: An additive manufacturing system includes a slip clutch coupled to an actuator of a mechanical driver that feeds solid extrusion material into a heater for supplying thermoplastic material to a manifold in an extruder head. A speed of the actuator can be set to enable the actuator to operate at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This configuration enables the pressure of the thermoplastic material in the manifold of the extruder head to be in a predetermined range no matter how many nozzles are opened in the extruder head.

公开(公告)号：US20200079020A1

公开(公告)日：2020-03-12

申请号：US16686566

申请日：2019-11-18

Applicant: Xerox Corporation

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

IPC: B29C64/321 ,  B29C64/343 ,  B29C48/21 ,  B29C48/02 ,  B29C64/209 ,  B29C48/92

Abstract: A method of operating an extruder assembly in a three-dimensional object printer translates and rotates an extruder body having an extrusion slot to produce three-dimensional objects more quickly and with greater precision. The method also includes rotating and moving one or more shutter bodies with respect to the extrusion slot to form a continuous filament of material of various sizes and shapes.

公开(公告)号：US10518471B2

公开(公告)日：2019-12-31

申请号：US15147259

申请日：2016-05-05

Applicant: Xerox Corporation

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

IPC: B29C44/32 ,  B29C64/321 ,  B29C48/21 ,  B29C64/343 ,  B33Y10/00 ,  B33Y30/00 ,  B29L9/00

Abstract: An extruder assembly for a three-dimensional object has an extrusion slot to enable faster three-dimensional object printing with greater precision. The extruder assembly includes an extruder body having an extrusion slot to enable a continuous filament of material to be extruded through the extrusion slot and at least one actuator operatively connected to the extruder body. The at least one actuator is configured to translate the extruder body in a horizontal plane and rotate the extruder body about a rotational axis.

公开(公告)号：US20190322043A1

公开(公告)日：2019-10-24

申请号：US15961256

申请日：2018-04-24

Applicant: Xerox Corporation

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

IPC: B29C64/209 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/106 ,  B33Y10/00 ,  B33Y30/00

Abstract: An additive manufacturing system operates an actuator to move an extruder with reference to a selected first zig-zag pattern to sparsely fill an interior region of an object by extruding a swath of thermoplastic material that has straight portions connected by angled portions. After a first pass using the first zig-zag pattern is completed, a second zig-zag pattern is used to form a complementary swath that forms rigid structure with the first swath. Use of the two patterns is alternated to sparsely fill the interior region in multiple layers of the object until a predetermined distance from a solid fill structure or surface is detected. Transition patterns are then used to increase the density of the swaths in the interior region in the next successive layers of the object until the layer is reached where a solid fill surface is formed over the swaths formed using the transition patterns.

公开(公告)号：US10350888B2

公开(公告)日：2019-07-16

申请号：US14563563

申请日：2014-12-08

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Peter J. Nystrom ,  Peter Gulvin ,  Andrew W. Hays ,  Jun Ma

IPC: B41J2/14

Abstract: A printer includes a printhead configured to eject high viscosity material and refill a reservoir in the printhead with high viscosity material. The printhead includes a transducer having an electroactive element and a member to which the electroactive element is mounted. An electrical signal activates the electroactive element to move the electroactive element and the member in the reservoir of high viscosity material. This movement thins the high viscosity material and enables the printhead to eject the thinned material while refilling the reservoir. The apertures through which the thinned material is ejected share a common manifold without separate chambers for each of the apertures.

公开(公告)号：US10328637B2

公开(公告)日：2019-06-25

申请号：US15156366

申请日：2016-05-17

Applicant: Xerox Corporation

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

IPC: B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/245 ,  B29C64/295 ,  B29C64/393 ,  B29K101/12 ,  B29C64/40

Abstract: A three-dimensional object printing system improves the interlayer adhesion of an object. The printing system includes a platform on which a three-dimensional object is built. A material applicator in the printing system expels material to form layers of the object on the platform. The material applicator also includes a heater configured to heat the layer of the object ahead of the material applicator when the material applicator moves in a first direction and a second direction, both directions being parallel to the platform.

公开(公告)号：US20180133980A1

公开(公告)日：2018-05-17

申请号：US15350200

申请日：2016-11-14

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Peter J. Nystrom

IPC: B29C67/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C47/30

Abstract: An additive manufacturing system has a plurality of manifolds in an extruder. Each manifold is connected to at least one nozzle of the extruder to enable the at least one nozzle to extrude thermoplastic material through a corresponding aperture in a faceplate mounted to the extruder. A plurality of valves is configured between each manifold and each nozzle connected to the manifold to enable the nozzles connected to a manifold to extrude thermoplastic material from the manifold selectively. The faceplate is also configured for rotation about an axis perpendicular to the faceplate to enable different orientations of the nozzles in the apertures of the faceplate. The different manifolds of the extruder enable a plurality of thermoplastic materials having a different property to be extruded simultaneously so the materials can join to one another while the materials are at an elevated temperature.