公开(公告)号：CA2056416A1

公开(公告)日：1990-12-13

申请号：CA2056416

申请日：1990-06-01

Applicant: 3D SYSTEMS INC

Inventor： LEWIS MARK A ,  LEYDEN RICHARD N ,  NGUYEN HOP D ,  ALMQUIST THOMAS A

IPC: B29C35/08 ,  B29C67/00 ,  B29C71/00 ,  B29C71/04 ,  B29K105/24 ,  H01L21/31 ,  B29C41/22 ,  H01L21/469

Abstract: 2056416 9015674 PCTABS00003 An improved stereolithographic apparatus and method is described. In one embodiment, the improvement comprises immersing at least a portion of a part (109) in a volume of a liquid solvent in a vapor degreaser while subjecting the portion to ultrasonic agitation to substantially remove excess resin (111). Several examples of solvents are provided, including ethanol, and Freon TMS. In a second embodiment, the improvement comprises building the part (109) on a layer of liquid resin (103) supported by a volume of a dense, immiscible, and UV transparent intermediate liquid, and integratably immersing at least a portion of the built part (109) in the intermediate liquid, and then either subjecting the immersed portion to ultrasonic agitation to substantially remove excess resin (111), or subjecting the immersed portion to UV light. Several examples of intermediate liquids are provided, including perfluorinated fluids, such as Fluorinert FC-40, and water-based salt solutions, such as solutions of magnesium sulfate or sodium chloride in water.

公开(公告)号：IN3258DEN2014A

公开(公告)日：2015-07-10

申请号：IN3258DEN2014

申请日：2014-04-23

Applicant: 3D SYSTEMS INC

Inventor： CHARLES R SPERRY ,  DENNIS F MCNAMARA ,  MARTIN ALAN JOHNSON ,  RICHARD ORA GREGORY II ,  CLINTON JAMES VILIM

IPC: G03F7/00

Abstract: There is provided solid imaging methods and apparatus for making three -dimensional objects from solid imaging material. A tray with a film bottom is provided to hold solid imaging material that is selectively cured into cross-sections.of the three-dimensional object being built. A coater bar is moved back and forth over the film to remove any uncured solid imaging material from a previous layer and to apply a new layer of solid imaging material. A sensor is provided to measure the amount of resin in the tray to determine the appropriate amount of solid imaging material to be added, from a cartridge, for the next layer. A shuttle, which covers the tray when the exterior door to the solid imaging apparatus is opened for setting up a build or removing a three -dimensional object, can also be used to move the coater bar and to selectively open one or more valves on the cartridge to dispense the desired amount of solid imaging material.

公开(公告)号：IN3240DEN2014A

公开(公告)日：2015-07-10

申请号：IN3240DEN2014

申请日：2014-04-23

Applicant: 3D SYSTEMS INC

Inventor： CHARLES R SPERRY ,  DENNIS F MCNAMARA ,  MARTIN ALAN JOHNSON ,  RICHARD ORA GREGORY II ,  CLINTON JAMES VILIM

IPC: G03F7/00

Abstract: There is provided solid imaging methods and apparatus for making three -dimensional objects from solid imaging material. A tray with a film bottom is provided to hold solid imaging material that is selectively cured into cross-sections of the three-dimensional object being built. A coater bar is moved back and forth over the film to remove any uncured solid imaging material from a previous layer and to apply a new layer of solid imaging material. A sensor is provided to measure the amount of resin in the tray to determine the appropriate amount of solid imaging material to be added, from a cartridge, for the next layer. A shuttle, which covers the tray when the exterior door to the solid imaging apparatus is opened for setting up a build or removing a three -dimensional object, can also be used to move the coater bar and to selectively open one or more valves on the cartridge to dispense the desired amount of solid imaging material.

公开(公告)号：DE602006011802D1

公开(公告)日：2010-03-11

申请号：DE602006011802

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES W ,  PARTANEN JOUNI P ,  SPERRY CHARLES R ,  DUNNE PATRICK ,  SCOTT SUZANNE M ,  MCNAMARA DENNIS F ,  MANNERS CHRIS R

IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

公开(公告)号：AT450360T

公开(公告)日：2009-12-15

申请号：AT05012520

申请日：2005-06-10

Applicant: 3D SYSTEMS INC

Inventor： CHUNG TAE MARK ,  PARTANEN JOUNI P

IPC: B29C67/00 ,  B23K26/34 ,  B29C35/08 ,  G01J5/52

Abstract: An apparatus and a method of using the apparatus wherein a radiation emitter (140) is positioned adjacent a sensor means (142,144,145) within a process chamber (102) in a laser sinter system (100) that emits radiation to the sensor means and a calibration means receives readings from the sensor means (142,144,145) to compare temperature sensings received from the sensor means with set emission signals from the radiation emitter (140) to adjust the temperature sensings to thereby calibrate the sensor means during the forming of a three-dimensional article. The calibration is done repeatedly during the build process of the three-dimensional article (Fig. 1).

公开(公告)号：DE602006000577T2

公开(公告)日：2009-03-19

申请号：DE602006000577

申请日：2006-05-09

Applicant: 3D SYSTEMS INC

Inventor： PARTANEN JOUNI P ,  ZHENG NING ,  BISHOP RAYMOND J

IPC: B29C67/00

公开(公告)号：DE60122219T2

公开(公告)日：2007-08-23

申请号：DE60122219

申请日：2001-01-09

Applicant: 3D SYSTEMS INC

Inventor： KULKARNI RAJEEV B ,  MANNERS CHRIS R

IPC: B29C67/00 ,  G06T17/00

Abstract: A stereolithographic process for forming three-dimensional objects using an improved support structure is disclosed. The support structure (28) is formed by using differential curing of the liquid media material to form solid supports with weak points (21, 24, 39) at selected locations to facilitate support removal from a three-dimensional object (22, 25) and minimize post-processing.

公开(公告)号：DE60214089T2

公开(公告)日：2007-04-12

申请号：DE60214089

申请日：2002-06-24

Applicant: 3D SYSTEMS INC

Inventor： NGUYEN HOP D ,  MOUSSA KHALIL M ,  MANNERS CHRIS R

IPC: B29C67/00

Abstract: A method and an apparatus for forming a three-dimensional object in layerwise fashion by selectively solidifying a build material is disclosed. The invention is applicable to stereolithography involving layer-by-layer photocuring of a fluid photopolymer by radiation such as ultra-violet light. Data for performing the stereolithography is based on CAD data. A main part area (10) is solidified, followed by a delay or pause for a desired period of time to permit shrinkage to occur, and then, in multiple drawings (13,17) of the main part borders, solidifies the borders from the portion closest to the main part (10) outwardly to final border (15) farthest from the main part which is the true CAD boundary.

公开(公告)号：HK1092420A1

公开(公告)日：2007-02-09

申请号：HK06109775

申请日：2006-09-01

Applicant: 3D SYSTEMS INC

Inventor： BREDT JAMES F ,  CLARK SARAH L ,  WILLIAMS DEREK X ,  DICOLOGERO MATTHEW J

IPC: B32B5/16 ,  C08L20060101 ,  C08L101/00

Abstract: A materials system and method is provided to enable the formation of articles by three-dimensional printing. The materials system includes thermoplastic particulate filler material that allows the accurate definition of articles that are strong without being brittle.

公开(公告)号：DE102005026884B4

公开(公告)日：2006-12-21

申请号：DE102005026884

申请日：2005-06-10

Applicant: 3D SYSTEMS INC

Inventor： CHUNG TAE MARK ,  PARTANEN JOUNI P

IPC: B22F3/105 ,  B23K26/34 ,  B29C35/08 ,  B29C67/00 ,  G01J5/52

Abstract: An apparatus and a method of using the apparatus wherein a radiation emitter (140) is positioned adjacent a sensor means (142,144,145) within a process chamber (102) in a laser sinter system (100) that emits radiation to the sensor means and a calibration means receives readings from the sensor means (142,144,145) to compare temperature sensings received from the sensor means with set emission signals from the radiation emitter (140) to adjust the temperature sensings to thereby calibrate the sensor means during the forming of a three-dimensional article. The calibration is done repeatedly during the build process of the three-dimensional article (Fig. 1).