Color three-dimensional printing apparatus and color three-dimensional printing method

Patent metadata

Field	Value
Publication number	US-10011074-B2
Application number	US-201514864834-A
Country	US
Kind code	B2
Filing date	Sep 24, 2015
Priority date	Oct 1, 2014
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A color three-dimensional (3D) printing apparatus configured for forming a colored 3D object is provided. The color 3D printing apparatus includes a stage, a first printing unit, a second printing unit, a color inkjet printing unit, and a curing unit. The first printing unit is configured for providing the stage with a first material. The second printing unit is configured for providing the stage with a second material, and a gap remains between the first material and the second material. The color inkjet printing unit is configured for providing the gap with a colored pigment. The curing unit is configured for curing the colored pigment to form the colored 3D object, and the colored 3D object is composed of a plurality of colored object units stacked together. A color 3D printing method is also provided.

First claim

What is claimed is:

1. A color three-dimensional printing method for forming a colored three-dimensional object on a stage, the colored three-dimensional object being composed of a plurality of colored object units stacked together, the color three-dimensional printing method comprising:
forming a first material layer on the stage;
forming a second material layer along an inner profile of the first material layer and providing a colored pigment, wherein a gap remains between the first material layer and the second material layer, and the colored pigment is in the gap; and
curing the colored pigment to form a colored layer and forming one of the colored object units containing the first material layer, the colored layer, and the second material layer.

2. The color three-dimensional printing method of claim 1 , wherein the colored layer is attached to the first material layer.

3. The color three-dimensional printing method of claim 1 , further comprising:
after forming one of the colored object units, continuously forming the other colored object units and stacking the colored object units to form the colored three-dimensional object.

4. The color three-dimensional printing method of claim 3 , further comprising:
after forming the colored three-dimensional object, submerging the colored three-dimensional object into a dissolution tank, such that the first material layer is dissolved in a solution in the dissolution tank.

5. The color three-dimensional printing method of claim 4 , wherein the solution in the dissolution tank comprises an acid solution, an alkali solution, or an organic solution.

6. The color three-dimensional printing method of claim 1 , wherein the first material comprises transparent resin or dissolvable resin, and the second material comprises white resin.

7. The color three-dimensional printing method of claim 1 , wherein the colored pigment comprises a red pigment, a cyan pigment, a yellow pigment, a black pigment, a transparent pigment, a white pigment, or a combination thereof.

Assignees

• Univ Nat Taiwan Science & Technology

Inventors

• Cheng Yih-Lin
• Chen Freeman
• Chen jun-hao

Classifications

• B29C64/118 Primary

  using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title

• B29K2055/02

  ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B29K2067/046

  PLA, i.e. polylactic acid or polylactide · CPC title

• B29C67/0059 Primary

  Operations & Transport · mapped topic