Processing method for printing information of powder-bed type 3D printing

Patent metadata

Field	Value
Publication number	US-10589442-B2
Application number	US-201514872412-A
Country	US
Kind code	B2
Filing date	Oct 1, 2015
Priority date	Aug 12, 2015
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

A method for processing printing information of a powder-bed type 3D printer is disclosed. The method comprises following steps of: generating a color image and an adhesive image for each printing slice in accordance with a 3D file; adjusting adhesive information of the adhesive image based on color information of the color image; and, generating a final printing image based on the color image and the adjusted adhesive image. The method prevents the 3D printing from jetting adhesive that may overlap with jetted colored ink by using the final printing image, so as to avoid the jetted color-ink being diluted by the adhesive, and powders being moist because of the overlap of the colored ink and the adhesive.

First claim

What is claimed is:

1. A processing method for printing information of powder-bed type 3D printing, comprising:
a) generating a color image for a printing layer, wherein the color image comprises color information having a plurality of ink droplets and a plurality of gaps between each of the ink droplets;
b) generating an adhesive image for the printing layer, wherein the adhesive image comprises adhesive information filled with a plurality of adhesive droplets and no space exists between any two adjacent adhesive droplets;
c) adjusting the adhesive information of the adhesive image for generating an adjusted adhesive image according to the color information of the color image;
d) generating a final printing image via combining the color image with the adjusted adhesive image; and
e) controlling a sprayer of a 3D printer to respectively jet the ink droplets and the adhesive droplets upon corresponding positions in accordance with the final printing image,
wherein the step c is to adjust the adhesive information of the adhesive image through executing an “exclusive or” calculation to the plurality of ink droplets of the color information and the plurality of adhesive droplets of the adhesive information, so the adhesive droplets in the adjusted adhesive image are only distributed on positions with respect to the gaps in the color image, and the step c comprises steps of:
c11) analyzing distribution information of the plurality of ink droplets according to the color information;
c12) obtaining positions which are distributed with the ink droplets and other positions which are not distributed with the ink droplets;
c13) deleting the adhesive droplets upon the positions which are distributed with the ink droplets in the adhesive information;
c14) determining whether moisture of the ink droplets will cause powder to expand and lead to deformation of a model according to color shade of the ink droplets in each unit area of the color information;
c15) retaining only parts of the adhesive droplets upon the positions which are not distributed with the ink droplets in the adhesive information if the moisture of the ink droplets will cause powder to expand and lead to deformation of the model; and
c16) generating the adjusted adhesive image according to the adhesive information which is processed with a deleting action;
wherein, the final printing image is consisted of the plurality of ink droplets, the plurality of adhesive droplets and a plurality of gaps generated from the deleting action, and the amount of the gaps in the final printing image is corresponding to the moisture of the plurality of ink droplets.

2. The processing method in claim 1 , wherein further comprises a step f before the step a): inputting a 3D file, wherein the 3D file comprises multiple of the printing layer.

3. The processing method in claim 1 , wherein the step c14 is to determine if the moisture of the ink droplets will cause powder to expand and lead to deformation of a model according to density of the ink droplets in each unit area of the color information.

4. A processing method for printing information of powder-bed type 3D printing, comprising:
a) generating a color image for a printing layer, wherein the color image comprises color information having a plurality of ink droplets;
b) generating an adhesive image for the printing layer, wherein the adhesive image comprises adhesive information having a plurality of adhesive droplets;
c) adjusting the adhesive information of the adhesive image for generating an adjusted adhesive image according to the color information of the color image, and comprising:
c11) analyzing distribution information of the plurality of ink droplets according to the color information;
c12) obtaining positions which are distributed with the ink droplets and other positions which are not distributed with the ink droplets;
c13) deleting the adhesive droplets upon the positions which are distributed with the ink droplets in the adhesive information;
c14) determining whether moisture of the ink droplets will cause powder to expand and lead to deformation of a model according to color shade of the ink droplets in each unit area of the color information;
c15) retaining all of the adhesive droplets upon the positions which are not distributed with the ink droplets in the adhesive information if the moisture of the ink droplets will not cause powder to expand and lead to deformation of the model;
c16) generating the adjusted adhesive image according to the adhesive information which is processed with a deleting action in step c15);
d) generating a final printing image via combining the color image with the adjusted adhesive image, wherein the final printing image is consisted of the plurality of ink droplets and the plurality of adhesive droplets and without any gap; and
e) controlling a sprayer of a 3D printer to respectively jet the ink droplets and the adhesive droplets upon corresponding positions in accordance with the final printing image, wherein the step c is to adjust the adhesive information of the adhesive image through executing an “exclusive or” calculation to the plurality of ink droplets of the color information and the plurality of adhesive droplets of the adhesive information.

Assignees

• Xyzprinting Inc
• Kinpo Elect Inc
• Cal Comp Electronics & Communications Company Ltd

Inventors

• Shih Hsueh-Kuan
• Wu I-Feng

Classifications

• B33Y50/02

  for controlling or regulating additive manufacturing processes · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title

• G05B19/4099

  Surface or curve machining, making three-dimensional [3D] objects, e.g. desktop manufacturing · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• G05B2219/35134

  3-D cad-cam · CPC title