Four key points of E Cigarette Window Boxes 3D printing process control are analyzed

Four key points of E Cigarette Window Boxes 3D printing process control are analyzed

3D printing was developed using E Cigarette Boxes3D technology, which has existed since the Second Industrial Revolution, but it was not until 2009 when Avatar was released that it was hailed as the largest and most technologically advanced 3D film ever made. This is when 3D technology was officially accepted and widely used in various industries.

As a tool for spreading information, printers use 3D technology in printing to get three-dimensional effect, so that people can see pictures with vivid images, novel pictures, strong visual impact and other characteristics, so as to achieve eye-catching or photographic effect, and this technology is called three-dimensional printing. China's three-dimensional printing technology began in the 1980s, but the cost and technical limitations have been lukewarm. The popularity of the 3D movie "Avatar" has reinvigorated the printer's morale, and three-dimensional printing technology is also on the rise.

The process of 3D printing is very complex, and the key points of process control mainly include the following four aspects.

1. Application of grating technology

The application of grating technology can not only eliminate Moire fringe, make the picture smooth and clear, but also improve the clarity, color saturation and three-dimensional sense of the image.

In terms of sharpness, without grating processing, the picture around the focus is clear, the displacement difference between the foreground and the last scene is large, and the whole picture is fuzzy. In order to improve the picture sharpness, we have to improve the printing accuracy, but after the printing accuracy is improved, the sharpness is not obvious. After grating processing, no matter the most foreground or the last scene, every part of the picture is very clear, and there is no need to increase the printing accuracy.

In terms of color saturation, without grating treatment, the color of the picture is dim and blurred, like separated by a layer of white fog. Even if special color management software is used, the color saturation is still poor. After grating processing, the color saturation has been improved qualitatively under the condition that the material is unchanged, and the picture is colorful and very bright, giving people a fresh and lively feeling.

In the performance of stereoscopic sensation, without grating treatment, stereoscopic sensation and clarity can not be achieved simultaneously, and the improvement of stereoscopic sensation must be at the cost of reducing clarity. After the grating processing, it can not only ensure the three-dimensional sense of the picture, but also meet the definition of the picture.

The following points should be paid special attention to in the production of three-dimensional printing grating.

(1) Number of grating lines. The number of raster lines used for stereo printing is usually higher than 75lpi. For example, the 75lpi grating produced by GOEX company is an animation grating, which can produce clear and stable multi-picture change effect, and can be used for ordinary three-dimensional effect. The number of grating lines is 90lpi grating is a three-dimensional grating, which can make the print produce strong depth; The grating with 159lpi line number is very dense, and the concave and convex feeling is almost not felt. It is suitable for anti-counterfeit packaging.

(2) Grating thickness. Generally, the lower the resolution, the thicker the grating, and the thicker the grating is suitable for larger three-dimensional posters. Thin grating printing is difficult, suitable for smaller format products.

(3) Grid direction. In general, the grating is horizontal, suitable for changing the image effect; The grating is vertical, suitable for stereoscopic effects. In pre-press processing, the direction of the composition should be determined according to the direction of the grating material in order to save costs.

(4) Grating size. In general, the larger the grating, the easier it is to deform. The common commercial printing grating size is 710mm×510mm. It should be noted that the grating material is not suitable for cutting before printing.

(5) Control of printing environment. Improper temperature and humidity will cause deformation of the grating. When using the grating, it should be placed in the printing workshop one day in advance, and the outer package should be opened. Do not put heavy objects on the package to avoid deformation.

2. Image scanning quality

Image scanning quality is directly related to printing quality. In the process of image scanning, we should first analyze the characteristics of the original manuscript according to its characteristics, and restore the information of the pitch level, relative contrast and saturation of the original manuscript as far as possible. Only in this way can the scanning equipment convert the information on the picture into a complete digital signal. Then the digital signal is processed by image processing software.

3. Net adding technology

Three - dimensional printing, like ordinary color printing, is also through the net to complete the reproduction of the original manuscript. Due to the fine stereo image pixels, coupled with the magnification of the column mirror grating, the number of cable must be more than 120lpi when plate-making; Three-dimensional printing and ordinary color printing screen Angle is different, green, black edition to use the same screen Angle, and different grid spacing of three-dimensional printing, yellow, magenta, green, black four plate network cable combination Angle should be different, in order to avoid the generation of Moire stripes.

4. Field density

Because the three-dimensional printing manuscript is composed of a strip of closely arranged pixels, after plate making and printing, but also composite grating, so when choosing the Angle of the network cable, in addition to considering the moire formed between the color version, but also pay attention to the moire formed by printing mesh and grating. Due to 3 d print will ultimately and composite grating, and grating film with a certain gray level, mostly used for three dimensional printing printing screen density is extremely fine 300 lpi, so only when the plate burning sun to 8 ~ 9 into outlets, otherwise when printing easy to paste version, and so you need to increase the dark area amount of ink, 9 ~ 9.5 into the effect of the network in order to achieve. So three - dimensional printing than planar four - color offset printing ink field density is higher.