The reasonableness of the three-dimensional grating proofing technology directly determines the quality of the three-dimensional printing products, and is also a key step in the success or failure of the three-dimensional printing. When the raster proofreading is correct, the printed three-dimensional picture will be very clear, without dizziness, and it looks very comfortable. Anyway, the picture is blurry, dangling, dizzy, and uncomfortable. If it is changed, it will be incomplete, and there will be afterimages. The principle of raster proofing for three-dimensional printing and printing is the same, but the method and difficulty are very different. If it is printing, we can measure at any time, correct the grating error at any time, so that the three-dimensional pattern and the grating can completely match and present the best three-dimensional effect. If it is three-dimensional printing, it is more difficult, because printing is generally batch processing, it is impossible to make many plates and print many times because of the error of the grating material, which not only increases the printing cost, but also wastes a lot of manpower and material resources. If you print regardless of the error of the grating material, the scrap rate will increase, causing many products to fail! The dissatisfaction of customers is also a loss to the printing enterprise, because the customers are not satisfied, the enterprise has no profit!
Raster proofreading is the most troublesome problem for three-dimensional printing enterprises, and it is also the most difficult problem to solve. Whether the raster proofreading technology is reasonable directly determines the quality of the finished product and the rate of scrap! In order to make the data of grating materials more stable, we generally recommend printing companies to purchase from regular grating material manufacturers, try to choose PET material gratings, and try to choose to produce stable gratings of the same batch.
Companies that regularly purchase gratings know that the same manufacturer, the same number of gratings, and the different batches of procurement, the grating data error is relatively large. Therefore, before three-dimensional printing, we must test the grating material and correct the grating error according to the test results. The process of raster proofreading is critical, because it directly determines the quality of the product! However, many companies do not pay enough attention to raster proofreading. Many technicians think that using the raster test software to measure all black and white, the corresponding data is the raster data, and then fill the data into the stereo software to synthesize it. In fact, the raster test is not so simple. I suggest that the stereo designer should read three articles on the "Raster Proofing Technology" on the Huamei Stereo website. That is just an introduction to the raster test for stereo printing, and the evaluation batch should be increased for stereo printing. The error range of the grating, the actual error range of the printing machine, and then use the advanced grating calibration method to correct the calculation of the grating test results to obtain the most reasonable raster printing data before batch printing.
The raster test, the raster batch range, the printing machine error, the advanced raster proof calculation, and the consistency of the three-dimensional synthesis algorithm are the prerequisites for the raster proof to be reasonable and indispensable!
If you want to improve the printing quality of the product and reduce the scrap rate, you must improve the raster proofing method, because the raster proofing determines the quality of the product, and it is also a key step in the success of three-dimensional printing!
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