公开(公告)号：US11207830B2

公开(公告)日：2021-12-28

申请号：US17248220

申请日：2021-01-14

Applicant: IO Tech Group Ltd.

Inventor： Ziv Gilan ,  Michael Zenou ,  Guy Nesher

IPC: B29C64/194 ,  B29C64/129 ,  B29C35/08 ,  B29C64/357 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/112 ,  B33Y40/20

Abstract: Methods and apparatus for the fabrication of solid three-dimensional objects from liquid polymerizable materials at high resolution. A material is coated on a film non-digitally, excess material is removed digitally, by laser, leaving an image of a layer to be printed, and the image is then engaged with existing portions of an object being fabricated and exposed to a non-digital UV curing light source. Since the only part of the process that is digital is the material removal, and this part is done by laser, the speed of printing and the robustness of the manufacturing process is improved significantly over conventional additive or 3D fabrication techniques.

公开(公告)号：US10919224B2

公开(公告)日：2021-02-16

申请号：US16509121

申请日：2019-07-11

Applicant: IO Tech Group, Ltd.

Inventor： Ziv Gilan ,  Daniel Liptz ,  Michael Zenou

IPC: B29C64/245 ,  B29C64/268 ,  B29C64/379 ,  B33Y30/00 ,  B33Y40/00

Abstract: A leveling system for a 3D printing system for laser dispensing includes inner and outer frames, each supported at its corners by respective actuators of first and second sets of actuators. The outer frame supports an optical plane within which material to be dispensed by laser irradiation is disposed. The inner frame supports a receiving medium plane within which a substrate on which said material to be dispensed by laser irradiation is disposed. Each actuator operates independently to displace a respective frame corner in the vertical direction. The inner and outer frames each is attached at their respective corners to a respective actuator by a rod, thus allowing the inner and outer frames to freely rotate with respect to one another. An additional frame may support sensors for monitoring the 3D printing system.

公开(公告)号：US10898921B2

公开(公告)日：2021-01-26

申请号：US16694616

申请日：2019-11-25

Applicant: IO Tech Group Ltd.

Inventor： Michael Zenou ,  Ziv Gilan

IPC: B05C11/10 ,  B05C5/02 ,  B05C1/08 ,  B05D1/26 ,  B05D1/40 ,  B05D7/00 ,  B05C11/02

Abstract: Systems and methods for dispensing liquid materials as may be used in applications for coating flexible films and the like. Such a film may be coated by dispensing a rheological material onto its surface while drawing the film through a gap between a pair of rollers. The gap defines the thickness of a layer of the material applied to the film and is maintained at a desired width by microwires positioned through the gap. Another film across the gap from that to which the rheological material is applied aids in the coating of the layer and a contact area of the second film may be adjusted relative to the gap, e.g., when changing materials or when the coating film becomes abraded or deformed.

公开(公告)号：US20190060951A1

公开(公告)日：2019-02-28

申请号：US16173793

申请日：2018-10-29

Applicant: IO Tech Group LTD.

Inventor： Michael ZENOU

IPC: B05D3/06 ,  G02B6/35 ,  G02B6/42 ,  G02B6/26 ,  B41J2/48 ,  G02B6/028 ,  G02B6/04

Abstract: The method for printing a three-dimensional shaped object made of one or more materials includes providing an irradiation head configured to emit a laser beam, providing a foil, and providing a coater having a plurality of material dispensers. Further, a respective coating material may be dispensed from each of the plurality of material dispensers to provide a plurality of dispensed coatings. Further, each of the plurality of dispensed coatings may be dispensed onto the foil so as to coat the foil in parallel or series with each other.

公开(公告)号：US20180071989A1

公开(公告)日：2018-03-15

申请号：US15704575

申请日：2017-09-14

Applicant: IO Tech Group Ltd.

Inventor： Michael ZENOU ,  Ziv GILAN

IPC: B29C64/393 ,  B29C64/379 ,  B29C64/209 ,  B29C64/277 ,  B29C64/268

CPC classification number: B29C64/393 ,  B22F3/008 ,  B23K26/402 ,  B29C64/106 ,  B29C64/112 ,  B29C64/118 ,  B29C64/165 ,  B29C64/209 ,  B29C64/268 ,  B29C64/277 ,  B29C64/379 ,  B29C64/40 ,  B29C2035/0838 ,  B33Y10/00 ,  B33Y30/00 ,  G05B19/4099 ,  G05B2219/49016 ,  G05B2219/49021

Abstract: A method of solid free form fabrication (SFF) is disclosed. The method comprises: receiving SFF data collectively pertaining to a three-dimensional shape of the object and comprising a plurality of slice data each defining a layer of the object. The method also comprises, for each of at least a few of the layers, dispensing a building material on a receiving medium, straightening the building material, and selectively ablating the building material according to respective slice data.

公开(公告)号：US11872750B2

公开(公告)日：2024-01-16

申请号：US18309991

申请日：2023-05-01

Applicant: IO Tech Group Ltd.

Inventor： Ziv Gilan ,  Michael Zenou ,  Guy Nesher

IPC: B29C64/194 ,  B29C64/112 ,  B29C64/357 ,  B29C64/129 ,  B29C35/08 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

CPC classification number: B29C64/194 ,  B29C35/0805 ,  B29C64/112 ,  B29C64/129 ,  B29C64/357 ,  B29C2035/0827 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

Abstract: Methods and apparatus for the fabrication of solid three-dimensional objects from liquid polymerizable materials at high resolution. A material is coated on a film non-digitally, excess material is removed digitally, by laser, leaving an image of a layer to be printed, and the image is then engaged with existing portions of an object being fabricated and exposed to a non-digital heat source. Since the only part of the process that is digital is the material removal, and this part is done by laser, the speed of printing and the robustness of the manufacturing process is improved significantly over conventional additive or 3D fabrication techniques.

公开(公告)号：US11642202B2

公开(公告)日：2023-05-09

申请号：US17493303

申请日：2021-10-04

Applicant: IO Tech Group Ltd.

Inventor： Michael Zenou ,  Guy Nesher ,  Ziv Gilan

IPC: A61C8/00 ,  A61C13/00 ,  C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  B29C64/268 ,  B29C64/205 ,  A61C13/08 ,  B33Y70/00 ,  B33Y80/00

CPC classification number: A61C13/0019 ,  A61C13/0013 ,  A61C13/08 ,  B29C64/205 ,  B29C64/268 ,  B33Y70/00 ,  B33Y80/00

Abstract: A three-dimensional device is fabricated in a layer-by-layer approach using a support material. The support material is deposited in a liquid form on a surface, hardened by cooling or ultraviolet (UV) curing, and selectively ablated to create an area within which the desired structure of the device will be formed. Active material is deposited into this area, and the layer-by-layer process repeated until the three-dimensional device has been completed. Thereafter, any remaining support material is removed by water or other solvent.

公开(公告)号：US11623996B2

公开(公告)日：2023-04-11

申请号：US16658870

申请日：2019-10-21

Applicant: Ivoclar Vivadent AG ,  IO Tech Group Ltd

Inventor： Lorenz Josef Bonderer ,  Jürgen Lauberscheimer ,  Wolfgang Wachter ,  Michael Zenou

IPC: C09D11/101 ,  B29C64/135 ,  C09D11/107 ,  B33Y70/00 ,  C09D11/38 ,  A61K6/30 ,  A61K6/887 ,  C08K3/16 ,  C08K3/36 ,  A61K6/62 ,  B33Y10/00 ,  A61C7/00 ,  A61C13/08 ,  B29K33/04

Abstract: The invention relates to a material for use as construction material for energy-pulse-induced transfer printing, which contains (a) at least one polymerizable binder, (b) at least one volume expansion component, (c) at least one initiator for the polymerization and (d) preferably at least one energy transformation component. The invention furthermore relates to a process for producing three-dimensional objects using the material.

公开(公告)号：US20220379560A1

公开(公告)日：2022-12-01

申请号：US17819279

申请日：2022-08-11

Applicant: IO Tech Group Ltd.

Inventor： Michael Zenou ,  Ziv Gilan ,  Daniel Liptz ,  Yuval Shai

IPC: B29C64/264 ,  B29C64/245 ,  B29C64/106 ,  B29C64/371 ,  B29C35/02 ,  B29C35/08 ,  B29C59/04

Abstract: Systems and methods that prevent oxygen inhibition of a light-initiated polymerization reaction by forcing the oxygen away from the reaction surfaces. In some embodiments, oxygen is purged by bringing a planarizing surface (e.g., a thin transparent film and/or a transparent planar surface) into contact with a layer of UV curable material disposed on a workpiece and then moving the planarizing surface away from the workpiece one the UV material is cured.

公开(公告)号：US11497124B2

公开(公告)日：2022-11-08

申请号：US17302449

申请日：2021-05-03

Applicant: IO Tech Group Ltd.

Inventor： Michael Zenou

IPC: H05K3/28 ,  H05K3/00 ,  C23C14/34 ,  H05K3/12

Abstract: Systems and methods that enable printing of conformal materials and other waterproof coating materials at high resolution. An initial printing of a material on edges of a component is performed at high resolution in a first printing step, and a subsequent printing of the material on remaining surfaces of the component is applied in a second printing step, with or without curing of the material printed on the edges between the two printing steps. The printing of the material may be performed by a laser-assisted deposition or using another dispensing system to achieve a high resolution printing of the material and a high printing speed.