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    APPARATUS AND METHOD FOR FORMING THREE-DIMENSIONAL MATTER
    11.
    发明专利
    APPARATUS AND METHOD FOR FORMING THREE-DIMENSIONAL MATTER 失效

    公开(公告)号：JPH10689A

    公开(公告)日：1998-01-06

    申请号：JP1690197

    申请日：1997-01-30

    Applicant: 3 D SYSTEMS INC

    Inventor： CHARLES W HULL

    IPC: B41M5/00 ,  B29C35/08 ,  B29C67/00 ,  B29K105/24

    Abstract: PROBLEM TO BE SOLVED: To rapidly and economically form a complicated and elaborate shape by forming successively adjacent cross-sectional laminated plates on the surface of a fluid medium capable of being cured in response to curing radiation so as to respond to graphic image output to integrate them to form three- dimensional matter. SOLUTION: The surface of a UV curable liquid 22 is held to definite height in a container and a spot 27 of UV rays having intensity converting the liquid 22 to a solidified material or other proper reactive energy is moved over a work surface in a programmed state. When the liquid 22 is cured to form a solidified material, the lift stand 29 provided just under the work surface 23 is allowed to fall in a programmed state by an operation apparatus to allow a new fluid 22 to flow in. This new liquid is converted to the solidified material by the programmed UV beam spot 27 to be bonded to the solidified material thereunder. By this constitution, this process is continued until the whole of three-dimensional matter 30 is formed and, thereafter, the matter 30 is taken out of the container 21.

    STEREO-LITHOGRAPH DEVICE
    13.
    发明专利
    STEREO-LITHOGRAPH DEVICE 失效

    公开(公告)号：JPH03218816A

    公开(公告)日：1991-09-26

    申请号：JP29059390

    申请日：1990-10-26

    Applicant: 3 D SYSTEMS INC

    Inventor： SUCHIYUAATO TOOMASU SUPENSU ,  CHIYAARUZU UIRIAMU RUISU ,  MAAKU ARAN RUISU

    IPC: G02B26/10 ,  B23K26/04 ,  B29C35/08 ,  B29C67/00 ,  B29K105/24

    Abstract: PURPOSE: To manufacture a solid article of a large size by providing a stationary mirror at a predetermined angle to a dynamic mirror system to reflect a beam to be traced by a beam generator substantially perpendicularly to a horizotal target surface, thereby reducing a size of a stereolithogrpahic apparatus. CONSTITUTION: A liquid photocurable resin 18 is filled in a vat 16, and a laser of an ultraviolet argon ion laser 20 curs a photosensitive polymer to a predetermined depth at a desired speed at a horizontal target surface. Two mirrors 28, 30 operate to reflect beams at 90 deg.. A beam enlarging unit 32 enlarges the laser after passing a resiual optical system, focuses it directs it to a dynamic mirror system 34, which directs the received laser above the vat 16. A stationary mirror 36 is fixedly disposed in a frame 22. When a reflected beam is emitted to a center of the target surface, it is directed directly under the vertical of the target surface of the vat 16 to form a normal of the surface.

    AFTER CURING OF IMPROVED SOLID FORM
    14.
    发明专利
    AFTER CURING OF IMPROVED SOLID FORM 失效

    公开(公告)号：JPH03207636A

    公开(公告)日：1991-09-10

    申请号：JP26295890

    申请日：1990-09-29

    Applicant: 3 D SYSTEMS INC

    Inventor： POORU FURANSHISU JIEIKOBUZU ,  JIYAN RIKUTAA

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

    Abstract: PURPOSE: To reduce a stress crack generated by a heat by emitting a light having a strong chemical action of a spectral range having a narrow wavelength to a partly cured stereoscopic molding, thereby lowering a postcuring temperature to reduce a warp. CONSTITUTION: In the case of selecting a radiation wavelength for curing a photosensitive polymer resin in an optimum state, it is necessary to obtain a terminating end of an absorption curve of a photopolymerization initiator or to position a terminating end curing radiation of a long wavelength not a point that an absorption becomes zero but its near position. For example, in the case of Irgacure 184, it is a wavelength range near 370 nm, in the case of Irgacure 651, a wavelength range near 390 nm, and in the case of other photopolymerization initiator Lucerin normally used for a stereoscopic molding, a wavelength range near 415 nm. Accordingly, an optimum postcuring radiation source radiates most of its output in a narrow limited spectral range with very small absorption of the initiator. A tubular low pressure mercury vapor fluorescent lamp for emitting an ultraviolet radiation (black light) having a long wavelength is ideal here.

    Enhanced building techniques in stereolithography
    15.
    发明专利
    Enhanced building techniques in stereolithography 审中-公开
    加强建筑技术在立体图中的应用

    公开(公告)号：JP2006099123A

    公开(公告)日：2006-04-13

    申请号：JP2005304939

    申请日：2005-10-19

    Applicant: 3 D Systems Inc ,  3ディー・システムズ、インコーポレイテッド

    Inventor： GIGL JOHN J ,  PANG THOMAS H ,  SMALLEY DENNIS R ,  ALLEN KERRY J ,  VORGITCH THOMAS J ,  MANNERS CHRIS R ,  EARL JOCELYN M ,  BEDAL BRYAN J L ,  JACOBS PAUL F ,  NGUYEN HOP D ,  LEYDEN RICHARD N ,  HULL CHARLES W ,  VANDORIN STACIE L

    IPC: B29C35/08 ,  G03F7/20 ,  B29C67/00 ,  G06F17/50 ,  G06T17/00

    CPC classification number: G06T17/00 ,  B29C64/135 ,  B29C64/40

    Abstract: PROBLEM TO BE SOLVED: To make high resolution objects by stereolithography utilizing low-resolution materials which are limited by their inability to form unsupported structures of required thinness and/or their inability to form coatings of a required thinness. SOLUTION: Data manipulation techniques, based on layer comparisons, are used to control exposure in order to delay solidification of the material on at least portions of at least some cross-sections until higher layers of material are deposited so as to allow down-facing features of the object to be located at a depth in the building material which is equal to or exceeds a minimum cure depth that can effectively be used for solidifying these features. Similar data manipulations are used to ensure a minimum reliable coating thicknesses exist, above previously solidified material, before attempting solidification of a next layer. In addition, horizontal comparison techniques are used to provide enhanced cross-sectional data for use in forming the object. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：通过使用低分辨率材料的立体光刻技术制造高分辨率物体，这些材料受到不能形成所需薄度的无支撑结构和/或不能形成所需薄度的涂层的限制。 解决方案：基于层比较的数据处理技术用于控制曝光，以便在至少一些横截面的至少部分上延迟材料的凝固，直到沉积更高层的材料以允许下降 物体的位于构造材料深度处的特征，其等于或超过可以有效地用于固化这些特征的最小固化深度。 使用类似的数据操作来确保在尝试凝固下一层之前存在最小可靠的涂层厚度，以上固化的材料。 此外，使用水平比较技术来提供用于形成物体的增强的横截面数据。 版权所有（C）2006，JPO＆NCIPI

    COMPOSITION AND METHOD FOR SELECTIVE LAMINATING
    19.
    发明专利
    COMPOSITION AND METHOD FOR SELECTIVE LAMINATING 失效

    公开(公告)号：JP2000309703A

    公开(公告)日：2000-11-07

    申请号：JP2000049736

    申请日：2000-02-25

    Applicant: 3 D SYSTEMS INC

    Inventor： BUI LOC V ,  DOAN VU ,  KWO KELLY

    IPC: B29C41/00 ,  B29C67/00 ,  B29K77/00 ,  B29K91/00 ,  C08K5/103 ,  C08K5/12 ,  C08K5/20 ,  C08L23/16 ,  C08L77/06 ,  C08L91/06 ,  C08L93/04 ,  C09D11/00

    Abstract: PROBLEM TO BE SOLVED: To make it possible to produce a three-dimensional object with a minimum curling, delamination and stress cracking at a rate faster than known rates by a selective laminating technique using a disclosed composition. SOLUTION: A phase transition composition is used which is solid at an ambient temperature and liquid at a temperature higher than the ambient temperature so that it is advantageous for use in a selective laminating method for shaping a three-dimensional object. The composition is a mixture of semicrystalline polar and non-polar components and has a freezing point of at least about 68 deg.C, a melting point of at least 88 deg.C and a viscosity of about 13 cP at 135 deg.C. It contains two or more waxes having a wide melting point range and a wide molecular weight range.

    THREE-DIMENSIONAL SHAPING METHOD AND APPARATUS
    20.
    发明专利
    THREE-DIMENSIONAL SHAPING METHOD AND APPARATUS 失效

    公开(公告)号：JP2000141495A

    公开(公告)日：2000-05-23

    申请号：JP37376999

    申请日：1999-12-28

    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: B29C67/00 ,  B29C35/08

    Abstract: PROBLEM TO BE SOLVED: To more accurately form a layer thickness in a three-dimensional shaping method to form a three-dimensional article from a plurality of layers continuously formed from a curable polymerizable liquid by exposing with a curing means such as a laser beam or the like. SOLUTION: The three-dimensional shaping method comprises the steps of removing an excess polymerizable liquid 302 from a layer of the liquid, sweeping a smoothing member 300 while maintaining a value of a gap between a lower side face of the member and an upper side face of the layer formed ahead of the article larger than a desired layer thickness to be formed in the case of sweeping the member 300 on the layer of the liquid to form a desired thickness layer or sweeping the member 300 at a surface above the upper surface of the layer.

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