3D printing method that generates fine asperity on solid surface

摘要

The problems to be solved by this invention is that, by using a layering 3D printing, is to generate objects with fine asperity on the surface, especially with images or characters drawn by fine asperity in high speed and exactly. The method in this invention solves the problem that asperity part may be easily dropped off, that the shape of the drawn images or characters is inexact, that the asperity part of the filament is stringy, and that the direction of slicing is restricted.;The problems are solved by the following method. Solids with fine asperity on the surface can be generated in high speed and exactly by changing the cross section of filament by changing the print-head motion speed or by changing the filament extrusion speed. Especially, solids with images and characters on the surface represented by asperity by changing the cross section according to a bitmap of images or characters.

主权项

1. A method of 3D printing, which forms a solid by layering extruded filaments extruded by the print head of a 3D printer;
comprising a process of generating asperity on the surface of said solid by increasing or decreasing the cross section of the filament on said surface by increasing or decreasing the motion speed of said print head.