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Graphic 3D printing - colour accurate softproof for 3D objects produced in Polyjet and Multijet fusion processes

Short name: Graphic 3D printing

Fogra-No. 12.017

Project-leader: Dr. Marco Mattuschka

Running from: 1.11.2018 - 31.10.2020

 

Aim of the project:

The colour-accurate rendering for 3D objects is more important that for 2D prints due to the high material prices and the comparatively long duration of the 3D printing process. They prevent the economical production of on-press proofs. Therefore, the goal of this project is to design a 3D soft proof for full-color 3D printers. It is to be expected that Polyjet or Multijet fusion technology will replace 3D powder printing (3DP) in graphic 3D printing. For this reason, these promising successors of the 3DP process will be the subject of this research project.

In order to realise a plausible 3D soft proof in graphic 3D printing, a number of technical problems must be overcome for each of the focal points mentioned, which are briefly presented below:
The first work package deals with the characterisation of 3D printers. For process and quality assurance along the process chain in 3D printing, it is essential to record visually plausible measurement data that provide information about the color appearance. For 3D printing, there are still no standardized measuring and sampling methods available. In order to solve this dilemma, the main factors influencing the overall visual impression of the printed products are to be determined by test prints. Colour charts are to be printed and measured in a visually plausibly way. In the second work package, a freely configurable rendering algorithm will be developed by Fraunhofer IGD as part of this project. This algorithm will support ICC colour management in general. The parameters required for the rendering are optimised perception-oriented by a psychophysical experiment under consideration of physical principles. In the last work package, the measured materials determined in work package 1 and the rendering algorithm developed in work package 2 will be embedded in the iccMAX framework developed by the ICC. In addition, the developed test objects will be coded by using the 3MF- and OBJ-formats.

For further information please contact mattuschka@fogra.org



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