# US 12,759,233 B2 · 3D printer for additive manufacturing of a multilayer component, printing method and component

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- Number: US 12,759,233 B2
- Document ID: US12759233B2
- Status: Granted
- Kind: B2
- Application number: 18/795,727
- Filed: 2024-08-06
- Published: 2024-11-28
- Granted: 2026-10-13
- Earliest claimed: 2020-01-29
- Assignees: TDK Electronics Co., Ltd.
- Applicants: TDK Electronics AG
- Inventors: Christoph Recher; Thomas Lenzen
- Web page: https://patentgrep.com/patent/US12759233B2

## CPC

- B29C 64/357: Recycling
- B29C 64/165: using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
- B29C 64/205: Means for applying layers
- B29C 64/232: for motion along the axis orthogonal to the plane of a layer
- B29C 64/236: for motion in a direction within the plane of a layer
- B29C 64/245: Platforms or substrates (support structures intended to be sacrificed after manufacture B29C64/40)
- B29C 64/255: Enclosures for the building material, e.g. powder containers
- B29C 64/264: Arrangements for irradiation
- B29C 64/336: of two or more materials
- B29C 64/35: Cleaning
- B33Y 10/00: Processes of additive manufacturing
- B33Y 30/00: Apparatus for additive manufacturing; Details thereof or accessories therefor
- B33Y 40/00: Auxiliary operations or equipment, e.g. for material handling
- B33Y 80/00: Products made by additive manufacturing
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

## Abstract

In an embodiment a method includes applying, by a dispenser, a layer of a first raw material to a work surface, the dispenser moving laterally across the work surface, wherein a layer thickness of the first raw material corresponds at least to a desired layer thickness of a layer to be added to the component, bringing the layer of the first raw material into contact with a surface of the component to be coated on the work surface and structurally curing a portion of the first raw material to form a new structured layer of the component, lifting the component comprising the new layer off the work surface, removing, by a first recovering device, a remaining first raw material from the work surface, the first recovering device moving laterally across the work surface and returning the first raw material to a first dispenser and repeating the aforementioned method steps with a second raw material and a second dispenser, wherein a second recovering device is provided so that the first and second raw materials are selectively returnable to a corresponding dispenser.

## Claims

### Claim 1

A method for additive manufacturing of a three-dimensional multilayer component, the method comprising:
applying, by a first dispenser, a layer of a first raw material to a work surface, the first dispenser moving laterally across the work surface, wherein a layer thickness of the first raw material corresponds at least to a desired layer thickness of a layer to be added to the component;
bringing the layer of the first raw material into contact with a surface of the component to be coated on the work surface and structurally curing a portion of the first raw material to form a new structured layer of the component;
lifting the component comprising the new layer off the work surface;
removing, by a first recovering device, a remaining first raw material from the work surface, the first recovering device moving laterally across the work surface and returning the first raw material to the first dispenser;
repeating the aforementioned method steps with a second raw material and a second dispenser, wherein a second recovering device is provided so that the first and second raw materials are selectively returnable to a corresponding dispenser;
removing, by moving a cleaning device laterally along the surface of the component, excess first raw material or excess second raw material from the surface of the component; and
returning, by an associated return device, the excess first raw material or the excess second raw material to the corresponding dispenser.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the component comprises a plurality of layers, which are delimited from each other along a flat surface, and which include different materials.

### Claim 3 (depends on 1)

The method according to claim 1,
wherein the work surface has a window permeable to radiation, the window has dimensions at least equal to the layers to be added,
wherein a building plate with the component is positioned above the window,
wherein the building plate is lowered normal to the window until a distance between the surface of the component and the work surface corresponds to a desired layer thickness of a new structured layer to be added to the component,
wherein the first raw material is structured and cured into a new layer by irradiating the multilayer component through the window, and
wherein the building plate with the component and the new layer adhering to it is lifted off the work surface.

### Claim 4 (depends on 3)

The method according to claim 3, wherein the component comprises a plurality of layers, which are delimited from each other along a flat surface, and which include different materials.