Third, the prospect of three-dimensional printing market
Stereo printing is a new kind of special printing, with broad prospects for development. Nowadays, in addition to conventional paper and plastic materials, it has also begun to shine in other areas.
1. Three-dimensional cartoon printing
Printing three-dimensional cartoons, three-dimensional photography printing is mainly the six kinds of images in a unit in the grating transparent film; and animation, it is mainly two images, very few are three images. After using the lenticular lenticular film for cartoon printing, not only three-dimensional pictures but also moving animations can be obtained by changing the screen angle. We know that the right eye and the left eye observe different pixel lines, and hundreds of different pixel lines under the corrugated transparent plate are combined. Since the two eyes observe different angles, a stereoscopic image of the entire screen can be obtained. In addition, the observed picture can acquire three-dimensionality when viewed from any angle, and 1, 2, 3,... pixel lines can be accumulated under each corrugated unit of the corrugated transparent sheet, and when the positions of the left and right eyes move, the pixel lines Combinations of 1 and 2, 2 and 3, 3 and 4... are combined so that they can be viewed continuously after being enlarged by the transparent sheet. In the case of animation, the texture of the translucent transparencies constitutes a horizontal horizontal position, and the two pixels observe the pixel lines 1, 2, 3,..., and these pixel lines have 18 in each lenticular unit with a pitch of 0.6 mm. Press the printing method to make cartoons. Can also be said to be attached to the original painting (equivalent to the film of the 18-frame continuous two sides) stored in a photo, on which a raster transparent film across, from the front to the back, it is equivalent to a movie in a second The action can be displayed within. In addition, there is an animation that makes different shifts in several sections on the same screen. When making this kind of dynamic three-dimensional picture, we must first prepare a different kind of animated photographs, which is to use a series of 18 video frames in order to overlay into a photo. Use this photo as a document, and apply a thin, transparent plastic plate to the front and back of the camera's photosensitive sheet, and place a one-inch, 300-line screen at a suitable distance before the plastic sheet. Then, the reflected light of the photo reaches the photosensitive sheet through the screen and the plastic plate, and a photographic film formed by decomposing continuous images of pixels is formed. With this plate-making printing, a dynamic picture can be obtained. However, this picture is so obscure that the contours of the image cannot be seen, and it is also necessary to attach transparent lenticular lenses on both sides in order to achieve direct viewing with the naked eye. If the printed three-dimensional prints are called three-dimensional space prints, then the dynamic factors will be added, so that a combination of three-dimensional sense and animation can produce a new four-dimensional space print.
2. Print three-dimensional patterns on the fabric
Printing graphics on textiles has always followed traditional graphic printing processes. Printing technicians can print anything they imagine, but designers can only design flat objects. Although the foaming ink can print some three-dimensional effects, the degree of foaming is difficult to control, so it is difficult to accurately reproduce the finer levels of the image during printing. Recently, in the United States, a research team has developed a new type of T-shirt screen printing ink with an ink layer thickness of 600 μm or more, and at the same time, it can effectively control the bulging of the ink layer. In contrast to the previous situation, the thickest ink layer of ordinary prints is usually the ink layer of metal decorative ink printed on transfer paper. According to reports, the thickness of the ink layer on the flat and non-porous printing materials with good ink receptivity is only up to 250 μm. However, the thickness of the ink layer is not the most prominent feature of the three-dimensional printing of the fabric. The most noticeable is its high resolution and sharpness. Three-dimensional printing makes the edge of the ink layer very clear and smooth, and it looks like it is die-cut or laser-engraved. Unlike inks with high hiding power, sweatshirt printing, and plastic ink printing, the three-dimensional printed ink film is often thin at the edges. No matter how high the resolution of the template is, the printed image can be easily stained. Like foaming inks, although a very thick ink layer can be printed, the cured edges are not clear and regular. The three-dimensional prints are clear and clean. The feature of three-dimensional image printing is more than just the use of a different ink or emulsion. Successful three-dimensional printing requires different operating procedures than ordinary printing. Although not difficult, it differs greatly from standard printing programs. Must combine well with many integrated systems, 3D printing can have new and enormous influence.
In addition, three-dimensional printing is now commonly used in the manufacture of printing in the foundry industry. For example, the three-dimensional printing (3DP) process developed by the MIT Emanual Sachs et al. has been widely used to manufacture ceramic shells and cores for casting. . The 3DP process uses powdered materials such as ceramic powders and metal powders. The material powder is printed on the material powder by the nozzle with an adhesive (such as silica gel) to form a three-dimensional image. After the post-treatment, the adhesive is burned first, and then the metal is infiltrated at a high temperature to densify the parts and increase the strength. In addition, three-dimensional printing has also begun to show special effects in the packaging of goods, printing of decorating materials, and printing of various types of cards. It can be expected that with the development of science and technology and the continuous improvement of three-dimensional printing technology, equipment, and materials, three-dimensional printing will have a brilliant appearance in many fields.
Source: Global Industry
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