Direct dyeing color fused deposition modeling three-dimensional printing apparatus and direct dyeing color fused deposition modeling three-dimensional printing method

Patent metadata

Field	Value
Publication number	US-10464302-B2
Application number	US-201615233813-A
Country	US
Kind code	B2
Filing date	Aug 10, 2016
Priority date	Dec 30, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A direct dyeing type color fused deposition modeling three-dimensional printing apparatus includes a forming stage, a forming unit, and a color-inkjet unit. The forming unit is located above the forming stage for providing forming-material layers on the forming stage in sequence. The color-inkjet unit is located above the forming stage for providing color-ink layers on the forming-material layers in sequence, wherein the forming-material layers and the color-ink layers are stacked alternately in sequence to form a colored three-dimensional object. A direct dyeing type color fused deposition modeling three-dimensional printing method is also provided.

First claim

What is claimed is:

1. A direct dyeing color fused deposition modeling three-dimensional printing method, comprising:
forming a forming-material layer on a forming stage;
forming a color-ink layer on the forming-material layer;
forming another forming-material layer on the forming-material layer on which the color-ink layer has been formed; and
forming another color-ink layer on the forming-material layer, wherein the forming-material layers and the color-ink layers are stacked alternately in sequence to form a colored three-dimensional object,
wherein a material of the forming-material layers comprises a material with hydrophilic base to be dyeable or a material without hydrophilic base initially but generating hydrophilic base through a process of changing functional group to be dyeable.

2. The direct dyeing color fused deposition modeling three-dimensional printing method according to claim 1 , wherein each of the color-ink layers is formed on the corresponding forming-material layer while the corresponding forming-material layer is in a heated and melted state.

3. The direct dyeing color fused deposition modeling three-dimensional printing method according to claim 1 , wherein a material of the color-ink layers comprises a dye capable of physically attaching or chemically bonding with the forming-material layers.

4. The direct dyeing color fused deposition modeling three-dimensional printing method according to claim 1 , wherein the step of forming the colored three-dimensional object is performed in a constant temperature environment, and a temperature of the constant temperature environment is in a range of 50° C. to 190° C.

5. The direct dyeing color fused deposition modeling three-dimensional printing method according to claim 1 , wherein a color-inkjet unit provides the color-ink layers on the entire outer surfaces of the corresponding forming-material layers in sequence.

6. The direct dyeing color fused deposition modeling three-dimensional printing method according to claim 1 , wherein a color-inkjet unit provides the color-ink layers on portions of the corresponding forming-material layer which are corresponding to outer surfaces of the colored three-dimensional object in sequence.

Assignees

• Univ Nat Taiwan Science & Technology

Inventors

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

Classifications

• B29K2995/0021

  Multi-coloured · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B41J11/0015

  for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing (selective coating B41J2/2114) · CPC title

• B29K2105/0032

  Pigments, colouring agents or opacifiyng agents · CPC title

• B05D3/0493

  using vacuum · CPC title