公开(公告)号：JP2000141499A

公开(公告)日：2000-05-23

申请号：JP7011699

申请日：1999-03-16

Applicant: 3 D SYSTEMS INC

Inventor： SNEAD DAVID E ,  SMALLEY DENNIS R ,  COHEN ADAM L ,  ALLISON JOSEPH W ,  VORGITCH THOMAS J ,  CHEN THOMAS P ,  NGUYEN HOP P ,  SCHMID CHRIS A ,  EVANS HERBERT E ,  FRIED RAYMOND S ,  JACOB PAUL F ,  BINSAN WAYNE A

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B29L9/00 ,  G06F17/50

Abstract: PROBLEM TO BE SOLVED: To obtain an optical shaping method of high resolving power and to reduce surface discontinuity by forming boule differentiation between initial layer data of first and second layers to form the data of the first layer and forming the layer data of the other layer to form layers one by one. SOLUTION: The boundary lines S[4]+, S[5]- and S[4]* of a matter and the slide plane thereof are provided and boule subtraction is performed between a certain layer and the layer on the upper side thereof and, from layer contours L(4)', L(5)', the region U(4) on the layer not overlapped with the upper side layer is determined. Next, boule differentiation between the layer contour L(4)' and the region facing to the bottom is operated to again adjust the layer contour. Next, the layer contour is subjected to third adjustment in order to subtract the region facing to the surface. The layer contour adjusted three times is obtained by operating the boule differentiation between the layer contour adjusted twice and the adjusted contour facing to the surface.

公开(公告)号：JP2006323361A

公开(公告)日：2006-11-30

申请号：JP2006078305

申请日：2006-03-22

Applicant: 3 D SYSTEMS INC

Inventor： KEREKES THOMAS A ,  PARTANEN JOUNI P

IPC: G02B26/10 ,  B23K26/00 ,  B23K26/08

Abstract: PROBLEM TO BE SOLVED: To keep exposure constant along a vector in a method for vector-scanning a laser beam. SOLUTION: A laser beam from a laser light source is oriented to a scanner which is provided with a first mirror 146 connected to a first rotary motive device 148 for positioning the first mirror and a second mirror 147 connected to a second rotary motive device 149 for positioning the second mirror 147. The laser beam is oriented from the first mirror to the second mirror, and then to a working face. By providing commanded-position signals to each of the first and the second rotary motive devices to rotate respective mirrors, the laser beam is scanned along the vector, each mirror undergoing acceleration at the beginning and the end of the vector, wherein the commanded-position signals are calculated based on physical mathematical modeling of the acceleration of the mirrors taking into account effects of inertia of the scanning system. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2003181941A

公开(公告)日：2003-07-03

申请号：JP2002345125

申请日：2002-11-28

Applicant: 3 D SYSTEMS INC

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

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

Abstract: PROBLEM TO BE SOLVED: To accurately and rapidly form a support structure together with a three-dimensional article in an apparatus for manufacturing the three- dimensional article by laminating a fluidized material having a higher curing temperature than an ambient temperature on each layer for constituting a section of the three-dimensional article. SOLUTION: A high-speed trially forming apparatus of the three-dimensional article with the support structure supplies the fluidized material having the higher curing temperature than the ambient temperature to be discharged from a print head 9 to each layer for constituting the three-dimensional article on a material supply base 18, and accurately decides a thickness of the layer by a smoothing member 11 having a rotary cylinder 18a. The layer for constituting the section is formed of data of the three-dimensional article and data of the support structure, and the article and the structure are simultaneously laminated in a vertical direction at the same speed. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003127238A

公开(公告)日：2003-05-08

申请号：JP2002223183

申请日：2002-07-31

Applicant: 3 D SYSTEMS INC

Inventor： DARRAH JAMES F ,  ZU XIAOSHU

IPC: B29C67/00 ,  G05B19/4099

Abstract: PROBLEM TO BE SOLVED: To minimize the time for construction of each layer in selective laser sintering. SOLUTION: In a computer controlled apparatus and method for preparing a three-dimensional body layer by layer, laser irradiates a selected spot of a powder layer and fuses the powder into a section of the body to be formed into the layer and a plurality of fused sections are fused into one body. The laser is controlled by a raster scanning method over the selected spot of the powder layer. Parallel raster scanning lines are set apart from each other between the center lines, according to a selected pitch, i.e., a space value of filling scanning lines. The positions of the parallel scanning lines are determined not for the outlines of the section to be formed, but for the coordinate system in the powder layer, and the parallel scanning lines are offset for each other by 1/2 of the pitch. By this disposition of the scanning lines, a structural strength of the body to be formed is optimized and, at the same time, the number of the scanning lines necessary for forming the body is minimized.

公开(公告)号：JP2002067175A

公开(公告)日：2002-03-05

申请号：JP2001208262

申请日：2001-07-09

Applicant: 3 D SYSTEMS INC

Inventor： MANNERS CHRIS R ,  KULKARNI RAJEEV B

IPC: B29C67/00 ,  G06F17/50

Abstract: PROBLEM TO BE SOLVED: To form a smooth contour from parts obtained by using a conventional slice forming method, and manufacture a final laminated object having a high precision and an improved surface appearance. SOLUTION: Statement data for the object to be formed is received. By processing the received data, the data is optimized in order to use the data for a selective energy application to stimulate a state variation of a liquid medium to form the object. The processing of the received data identifies all the vertexes in calculated slice layers of the statement data of the object. The object is sliced in such a manner that slice boundary layers may pass respective vertexes. Boolean function is applied to the sliced layers in order to form the expression of the laminated object having a smooth contour.

公开(公告)号：JP2001287272A

公开(公告)日：2001-10-16

申请号：JP2001069484

申请日：2001-03-12

Applicant: 3 D SYSTEMS INC

Inventor： THOMAS O ORUMUKISUTO ,  CHARLES W HULL ,  BORUZO MODOREKU ,  SERKUCZEWSKI ANDRZEJ R ,  PAUL F JACOB ,  CHARLES W LEWIS ,  MARK A LOUIS ,  ABRAHAM RIRAN

IPC: B29C35/08 ,  B29C41/12 ,  B29C67/00 ,  B29K105/24 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12

Abstract: PROBLEM TO BE SOLVED: To shorten the cycle time of each of layers formed at the time of manufacture of three-dimensional matter. SOLUTION: A large quantity of a polymerizable liquid 11 is held on the previously formed layer of the three-dimensional matter 40 and the excessive polymerizable liquid 11 on the previously formed layer is swept and removed by a smoothing member 26. The exposure to a means for curing the polymerizable liquid 11 is delayed until the sweeping by the smoothing member 26 is completed. Thereafter, the curing means is selectively applied to the layer of the polymerizable liquid 11 in order to cure a part of the polymerizable liquid 11 adjusted to desired layer thickness by sweeping to form the next layer of the three-dimensional matter 40 on the previously formed layer of the matter 40. This operation is repeated plural times to form the three- dimensional matter 40 having the cured layer of the polymerizable liquid 11 continuously formed thereon.

公开(公告)号：JP2000218708A

公开(公告)日：2000-08-08

申请号：JP26950999

申请日：1999-09-22

Applicant: 3 D SYSTEMS INC

Inventor： HAL CHARLES WILLIAM ,  LEWIS CHARLES WILLIAM

IPC: B29C35/08 ,  B29C67/00

Abstract: PROBLEM TO BE SOLVED: To automatically form a structure for supporting a matter and a structure for fixing the matter to a stand in a stereo-lithography method for forming a three-dimensional matter. SOLUTION: A first means for prescribing a matter support structure especially formed in relation to a three-dimensional matter to be formed and a second means for automatically forming the three-dimensional matter in response to especially formed data are provided. The especially formed data prescribes a web sufficiently thin to facilitate the detachment from the matter after formed or a web sufficiently long to reach the cross section of the matter or a support fixing the edge of a layer to a proper place until a crosshatch vector is drawn or a support preventing the deformation of a cantilever or a support attaching the part of a layer becoming a drifted layer.

公开(公告)号：JP2000015706A

公开(公告)日：2000-01-18

申请号：JP13310999

申请日：1999-04-05

Applicant: 3 D SYSTEMS INC

Inventor： HULL CHARLES W ,  SPENCE STUART T ,  ALBERT DAVID J ,  SMALLEY DENNIS R ,  HARLOW RICHARD A ,  STEINBURGH PHILIP ,  TARNOFF HARRY L ,  NGUYEN HOP D ,  LEWIS CHARLES W ,  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: PROBLEM TO BE SOLVED: To realize the quicker development and production of a highly accurate three dimensional plastic by a method wherein the coordinate data on an offered three dimensional substance are operated so as to automatically produce a three dimensional substance in response to the operated coordinate data. SOLUTION: By converting the CAD/CAM data of a substance into data representing the sections of the substance and directing a laser beam, the sectional shapes of the substance are drawn on the surfaces of liquid photosensitive polymer layers by means of the above-mentioned sectional data. By directing the beam so as to form a section to be adhered onto the sections already hardened and piled up through the hardening of the liquid photosensitive polymer layer in order to be arranged on the sections already hardened and piled up, the sections already hardened and piled up are positioned to the liquid photosensitive polymer layer. Further, by controlling a directing means and a positioning means by utilizing the above-mentioned sectional data, the piled-up sections of the substance are reproduced out of hardened photosensitive polymers.

公开(公告)号：JPH11333937A

公开(公告)日：1999-12-07

申请号：JP12857699

申请日：1999-05-10

Applicant: 3 D SYSTEMS INC

Inventor： SERBIN JUERGEN ,  WOLF PETER DR ,  KRUG GABRIELE

IPC: G03F7/20 ,  B29C41/12 ,  B29C67/00 ,  G03C9/08

Abstract: PROBLEM TO BE SOLVED: To produce matter enhanced in accuracy and to especially adjust layer thickness certainly and simply in an apparatus and method for producing three-dimensional matter by using stereolithography. SOLUTION: In an apparatus for forming matter by using stereolithography, a tank 1 is filled with a material 3 having a liquid surface 2 and capable of being solidified by electromagnetic radiation an a wiper 15 is moved by a moving device 26 so as to traverse the liquid surface 2 of the material 3 to form the desired layer thickness of the material 3. The wiper 15 has front and rear surface parts having mutually different surface tension values.

公开(公告)号：JPH03211040A

公开(公告)日：1991-09-13

申请号：JP29164790

申请日：1990-10-29

Applicant: 3 D SYSTEMS INC

Inventor： SUCHIYUAATO TOOMASU SUPENSU ,  DENISU RORETSUTO SUMOORII

IPC: B29C67/00 ,  B29C35/08 ,  B29K105/24

Abstract: PURPOSE: To use a plurality of penetration depths independently or in simultaneous combination corresponding to conditions by providing a stimulating radiation source simultaneously containing at least two kinds of separate wavelengths having different penetration depths into a curable material and a platform control device for regulating the height of a platform. CONSTITUTION: A light source consists of several different light sources actually and each of the light sources generates a single or a plurality of stimulating radiation wavelengths. Stimulating radiations of different wavelengths generate different penetration depth values in a generally given photopolymer 22. Two kinds or more wavelengths are simultaneously used in order to solidify a resin or stimulating radiations of two or more kinds of wavelengths are used but, in a solidifying process, only one wavelength is used at a time and respective wavelengths are absorbed at the given depth of an imaginary photopolymerization initiator having different penetration depths into a resin to be used. A photopolymer mainly comprises various monomers generally and contains a photopolymerization initiator or other various components.