公开(公告)号：DE60312443T2

公开(公告)日：2007-12-13

申请号：DE60312443

申请日：2003-07-16

Applicant: 3D SYSTEMS INC

Inventor： STEINMANN BETTINA

IPC: B29C67/00 ,  G03F7/027 ,  B29K35/00 ,  B29K63/00 ,  C08G59/68 ,  G03F7/00 ,  G03F7/038

Abstract: A liquid radiation-curable composition that comprises (A) at least one polymerizing organic substance comprising a mixture of (1) at least one alicyclic epoxide having at least two epoxy groups; and (2) at least one difunctional or higher functional glycidylether of a polyhydric compound; (B) at least one free-radical polymerizing organic substance comprising a mixture of (1) optionally, at least one trifunctional or higher functional (meth)acrylate compound; and (2) at least one aromatic di(meth)acrylate compound; (C) at least one cationic polymerization initiator; (D) at least one free-radical polymerization initiator; (E) optionally, at least one hydroxyl-functional aliphatic compound; and (F) at least one hydroxyl-functional aromatic compound; wherein the concentration of hydroxyl groups in the radiation-curable composition is at least about 1.1 equivalent OH groups per kilogram; wherein the concentration of epoxy groups in the radiation-curable composition is at least about 5.5 equivalent epoxy groups per kilogram; and wherein the amount of trifunctional or higher functional (meth)acrylate compound (B)(1) is from 0% to about 3% of the composition and the amount of aromatic di(meth)acrylate compound (B)(2) is at least 10% of the composition.

公开(公告)号：DE602005001972D1

公开(公告)日：2007-09-27

申请号：DE602005001972

申请日：2005-04-07

Applicant: 3D SYSTEMS INC

Inventor： CHUNG TAE MARK ,  DELGADO DANIEL ALFONSO

IPC: B29C67/00 ,  B22F3/105 ,  B29C35/02 ,  B29C35/08 ,  B29C41/36 ,  B29C67/04

公开(公告)号：DE60213267T2

公开(公告)日：2007-08-02

申请号：DE60213267

申请日：2002-09-24

Applicant: 3D SYSTEMS INC

Inventor： SCHMIDT ALAN

IPC: B29C67/00

Abstract: A selective deposition modeling method and apparatus for dispensing a curable phase change material. The dispensing temperature of the material is set at or less than a thermally stable temperature value for the material in which the reactive component of the material remains substantially uncured when held at the temperature for a desired time period. The dispensed material is provided with an environment that enables the material to solidify to form layers of the object. The solidified material is normalized to a desired layer thickness and is then cured by exposure to actinic radiation. In a preferred embodiment a UV curable phase change material is dispensed at about 80° C. and has a viscosity of about 13 to about 14 centipoise at this temperature. The cured material provides substantially increased physical properties over thermoplastic phase change materials previously used in selective deposition modeling.

公开(公告)号：DE69636237T2

公开(公告)日：2007-03-29

申请号：DE69636237

申请日：1996-09-27

Applicant: 3D SYSTEMS INC

Inventor： LEYDEN RICHARD N ,  THAYER JEFFREY S ,  BEDAL BRYAN J L ,  ALMQUIST THOMAS A ,  HULL CHARLES W ,  EARL JOCELYN M ,  KEREKES THOMAS A ,  SMALLEY DENNIS R ,  MEROT CHRISTIAN M ,  FEDCHENKO RICHARD P ,  LOCKARD MICHAEL S ,  PANG THOMAS H ,  THAT DINH TON

IPC: B29C67/00 ,  B22F3/00 ,  B29C35/08 ,  B29C41/12 ,  B29C41/36 ,  B29K63/00 ,  B41J2/01 ,  G03C9/08 ,  G06T17/00

Abstract: A three-dimensional object is formed by selectively depositing successive layers (14) of build material from a print-head (9) having a plurality of orifices or nozzles (10(1)-10(96)), such as an ink-jet type of print-head. The print-head (9) is moved (X-Y control) relative to a support platform (15) in a series of scans in the X-direction offset from one another in the Y-direction and possibly overlapping. The orifices (10(1)-10(96)) extend transversely of the scan X-direction and may be set at an angle (α) to it to control the resolution perpendicular to the scan direction. The platform (15) is movable relative to the print-head in the Z-direction for forming each successive layer (14). The build material is a flowable material and may be a radiation-curable material, such as an ultra-violet curable photo-polymer. The data according to which each layer is formed may be manipulated according to a selected build style to determine the selective activation of the print-head orifices.

公开(公告)号：HK1088280A1

公开(公告)日：2006-11-03

申请号：HK06108783

申请日：2006-08-08

Applicant: 3D SYSTEMS INC

Inventor： BREDT JAMES F ,  ANDERSON TIMOTHY C ,  RUSSELL DAVID B

IPC: C04B28/16 ,  B28B20060101 ,  B28B1/00 ,  B28B1/16 ,  B28B7/34 ,  B28B7/46 ,  B29C20060101 ,  B29C67/00 ,  B29C67/24 ,  C04B20060101 ,  C04B28/14 ,  C04B40/00

Abstract: A layer of particulate material (20) is applied on a downwardly movable surface (22) of a container (24), preferably using a counter-roller to minimize disruption of previously formed layers. The layer thickness is preferably 50-75 micrometers and an ink-jet nozzle (28) delivers droplets of an aqueous fluid (26) to a portion (30) of the material in any predetermined two-dimensional pattern, causing a reaction and re-hydration of the plaster. A solid circular layer is formed that becomes a cross-sectional portion of the final article, formed of the assembled portions. An independent claim is included for a method for forming an article.

公开(公告)号：DE60213267D1

公开(公告)日：2006-08-31

申请号：DE60213267

申请日：2002-09-24

Applicant: 3D SYSTEMS INC

Inventor： SCHMIDT ALAN

IPC: B29C67/00

Abstract: A selective deposition modeling method and apparatus for dispensing a curable phase change material. The dispensing temperature of the material is set at or less than a thermally stable temperature value for the material in which the reactive component of the material remains substantially uncured when held at the temperature for a desired time period. The dispensed material is provided with an environment that enables the material to solidify to form layers of the object. The solidified material is normalized to a desired layer thickness and is then cured by exposure to actinic radiation. In a preferred embodiment a UV curable phase change material is dispensed at about 80° C. and has a viscosity of about 13 to about 14 centipoise at this temperature. The cured material provides substantially increased physical properties over thermoplastic phase change materials previously used in selective deposition modeling.

公开(公告)号：AT331235T

公开(公告)日：2006-07-15

申请号：AT01309337

申请日：2001-11-02

Applicant: 3D SYSTEMS INC

Inventor： PARTANEN JOUNI P ,  TANG NANSHENG ,  WU XINGKUN

IPC: G03F7/20 ,  B23K26/04 ,  B23K26/06 ,  B23K26/067 ,  B23K26/073 ,  B29C67/00 ,  G02B7/10 ,  G02B27/09 ,  G02B27/40 ,  G11B7/125 ,  G11B7/135

Abstract: An illumination system includes optics capable of adjusting the size of a beam of light and adjusting the focus of the beam of light. Spot size control optics adjusts the overall size of the beam of light and separately adjusts the ellipticity of the beam, primarily in one dimension. Light from the spot size control optics passes to focus control optics that control the overall focus of the beam of light and adjust the astigmatism of the beam by altering the focus position of the beam of light in one dimension. The laser system, the spot size control optics and the focus control optics are within an enclosure. Actuators under remote control from outside of the enclosure adjust both of the spot size control optics and focus control optics in the thermal environment of the illumination system.

公开(公告)号：FR2878771A1

公开(公告)日：2006-06-09

申请号：FR0512351

申请日：2005-12-06

Applicant: 3D SYSTEMS INC

Inventor： RUATTA STEPHEN A ,  MOUSSA KHALIL M

IPC: B22F3/105 ,  B23K26/34 ,  B29C67/00 ,  C23C24/08 ,  C23C24/10 ,  C23C26/02

Abstract: Dans ce procédé, une poudre fusible est exposée à plusieurs balayages de laser (114) à des niveaux d'énergie contrôlés et pendant un temps suffisant pour fondre et densifier la poudre et en évitant la fusion de particules hors de la frontière de fusion (110). Un balayage initial à énergie relativement élevée est effectué pour fondre la poudre, suivi par des balayages contrôlés d'énergie inférieure pour densifier la fusion, et séparés dans le temps pour dissiper la chaleur dans la masse de la pièce environnante. La vitesse et l'ampleur de la fusion sont contrôlés de sorte que chaque balayage successif sert à fondre les particules par échelons progressifs discrets. Les dimensions finales, les propriétés mécaniques et la densité de l'élément (110) peuvent être améliorées.

公开(公告)号：AT313105T

公开(公告)日：2005-12-15

申请号：AT02075796

申请日：1989-04-17

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES WILLIAM ,  SPENCE STUART THOMAS ,  ALBERT DAVID J ,  SMALLEY DENNIS ROLLETTE ,  HARLOW RICHARD A ,  STEINBURGH PHILIP ,  TARNOFF HARRY L ,  NGUYEN HOP D ,  LEWIS CHARLES WILLIAM ,  VORGITCH TOM J ,  REMBA DAVID Z

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  G01J1/42 ,  G03C9/08 ,  G03F7/00 ,  G03F7/20 ,  G06F17/50 ,  G06T17/00 ,  G06T17/10 ,  G06T17/20

Abstract: An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, information defining the object being specially processed to reduce curl and distortion, and increase resolution, strength, accuracy, speed and economy of reproduction even for rather difficult object shapes, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process. The conversion of CAD/CAM data descriptive of the object into stereolithographic data used to trace cross-sections of the object is described.

公开(公告)号：DE69828059T2

公开(公告)日：2005-11-03

申请号：DE69828059

申请日：1998-05-12

Applicant: 3D SYSTEMS INC

Inventor： MANNERS R ,  SMALLEY R

IPC: B29C41/12 ,  B29C67/00

Abstract: This invention relates to the stepwise layer-by-layer formation of a three-dimensional object through application of the principles of stereolithography and to the automatic detection of surface features of each layer of a three-dimensional object to manufacture parts more reliably, more accurately and more quickly. Automatic detection of trapped volume regions and size of solidified cross-sectional regions are disclosed. Automatic selection of recoating styles is made based on(1) the detected regions, (2) empirically or otherwise determined optimum recoating styles for different types of regions, and (3) a look-up table, other correlation system, or processor for associating recoating style information with laminae containing particular identified regions.