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Boundary coloring width defining method for color slice layer

A slice layer, color technology, applied in the field of 3D printing, can solve the problems of not matching the coloring characteristics of printing materials well, lack of border coloring width definition methods, color reproduction accuracy bottlenecks, etc., to improve coloring energy consumption optimization and reduce borders Coloring time and material usage, effect of improving color reproduction accuracy

Active Publication Date: 2019-09-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is not difficult to modify the coloring outline thickness of the color slice layer in the layering software settings, there is still a lack of a boundary coloring width definition method that is easy for ordinary users to understand
[0004] In addition, the overly safe boundary coloring thickness (width) limits the further improvement of color reproduction accuracy and printing speed of current color 3D printers
More color inks or color adhesives are required for thick or wide border shading outlines, which also increases printing costs and energy consumption
The color 3D printing accuracy control of the current localized color 3D printing equipment also encounters the bottleneck of color reproduction accuracy. Coloring characteristics of matching printing materials

Method used

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  • Boundary coloring width defining method for color slice layer
  • Boundary coloring width defining method for color slice layer
  • Boundary coloring width defining method for color slice layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] If the sliced ​​and layered color 3D model is a large-scale model with a side length greater than 20cm,

[0062] The high-precision requirements of the 3D printing layer refer to the range of layer height printing accuracy that can be achieved by the 3D printer, preferably 0.100-0.150mm;

[0063] If the 3D printing material is a transparent material, the weighted value n is preferably 3; if the 3D printed material is a reflective material, the weighted value n is preferably 6;

[0064] The observation of the whiteness of the surface of the colored 3D printed entity and the effect of color reproduction refers to the observation angle between the human eye and the surface of the 3D printed entity preferably at 30° under a standard light box equipped with a CIE standard illuminant; the preferred CIE standard illuminant is D65.

Embodiment 2

[0066] If the sliced ​​and layered color 3D model is a medium-sized model with a side length of 5-20cm,

[0067] The high-precision requirements of the 3D printing layer refer to the range of layer height printing accuracy that can be achieved by the 3D printer, preferably 0.075-0.100mm;

[0068] If the 3D printing material is a transparent material, the weighted value n is preferably 2; if the 3D printed material is a reflective material, the weighted value n is preferably 4;

[0069] The observation of the whiteness of the surface of the colored 3D printed entity and the effect of color reproduction refers to the observation angle between the human eye and the surface of the 3D printed entity preferably at 45° under a standard light box equipped with a CIE standard illuminant; the preferred CIE standard illuminant is D65.

Embodiment 3

[0071] If the sliced ​​and layered color 3D model is a small-sized model with a side length less than 5cm,

[0072] The high-precision requirements of the 3D printing layer refer to the layer height printing accuracy range that can be achieved by the 3D printer, preferably 0.025-0.075mm;

[0073] If the 3D printing material is a transparent material, the weighted value n is preferably 1; if the 3D printed material is a reflective material, the weighted value n is preferably 2;

[0074] The observation of the whiteness of the surface of the colored 3D printed entity and the effect of color reproduction refers to the observation angle between the human eye and the surface of the 3D printed entity preferably at 60° under a standard light box equipped with a CIE standard illuminant; the preferred CIE standard illuminant is D65.

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Abstract

The invention provides a boundary coloring width defining method for a color slice layer. The method comprises the following steps of selecting an STL format file of the color 3D digital model and a slicing layering algorithm, and calculating a minimum printing precision weighting relationship between a boundary inclination angle required by initial boundary coloring width modeling and an exposedsurface color development width through a triangular patch normal vector marked by the sliced and layered contour slice layer and a construction vector. The method comprises the specific implementation steps of a boundary inclination angle calculation method between adjacent slice layers, a boundary coloring width modeling method, a 3D printing entity color reproduction effect evaluation method and the like. The boundary coloring width defining method for the color slice layer can be used for calibrating boundary coloring thickness value setting of the color slice layer in a current slicing and layering algorithm and can also be used for improving existing domestic color 3D printing color reproduction precision and coloring energy consumption optimization.

Description

technical field [0001] The invention belongs to the field of 3D printing, and relates to a full-color 3D printing process, in particular to a method for defining the border coloring width of a color slice layer. Background technique [0002] 3D printing technology is widely used in traditional manufacturing fields such as aerospace, biomedicine, and automobile manufacturing because of its digital manufacturing capabilities. With the development of color 3D printing technology and the corresponding system, the high-precision color reproduction function of 3D printing technology has promoted its rapid industrialization in the field of 3D model printing that requires color customization, such as cultural creativity, industrial design, and geographic terrain information visualization. The success of color 3D printing technology is inseparable from the support of color 3D model layering software, especially the development of high-precision and high-efficiency color slice layerin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20Y02P90/30
Inventor 陈广学袁江平钟雨晗
Owner SOUTH CHINA UNIV OF TECH