What's the difference between inkjet printing, screen printing and photographing? What are light films and dumb films?

Cover the semi-finished flat with transparent film to protect the indoor sprayed materials. What is bright is called a light film/what cannot reflect light is called a dumb film. Ink painting is a basic and more traditional expression technique, which has irreplaceable characteristics and advantages: A. Compared with other hand-painted techniques, its performance is more delicate and realistic, and it can express objects in a surreal way, so as to achieve the picture effect of confusing the fake with the real. Compared with modern technologies such as computers and photography, the images it displays are more natural and vivid. Photo is a digital proofing software developed by Founder Electronics Company of Peking University. The sample files generated by Founder typesetting and editing software can be output to paper products or films through Founder photo color management software. Founder photo newspaper digital proofing system is mainly composed of high-quality and fast color inkjet printer and color management software, which is widely used in newspaper advertising department, editorial department, publishing department and printing plant. Printing refers to printing program results with a printer. Screen printing of graphic materials belongs to stencil printing, which is called four printing methods together with lithography, gravure printing and gravure printing. Stencil printing includes copying stencil, engraving stencil, stencil printing and screen printing. The principle of stencil printing is that when printing, the ink is transferred to the substrate (paper, ceramics, etc.). ) pass through the perforation of the template with a certain pressure to form an image or text. Transcription printing is the simplest stencil printing, which started at the end of19th century. This kind of printing is made of special wax paper with typewriter or iron pen, and printed on the wax paper with ink roller, and the ideal printing effect can be obtained on the substrate. Screen printing is widely used in stencil printing. Screen printing is to stretch silk fabric, synthetic fiber fabric or metal screen on a screen frame, and make a screen printing plate by hand carving paint film or photochemical plate making. Modern screen printing technology is to make a screen printing plate by photographic plate making with photosensitive materials (making the screen holes in the graphic part of the screen printing plate as through holes, but not blocking the screen holes in the graphic part). When printing, the ink is squeezed by the scraper and transferred to the substrate through the mesh of the graphic part to form the same graphic as the original. Screen printing equipment is simple, easy to operate, simple in printing and plate making, low in cost and strong in adaptability. Screen printing is widely used. Common printed matter includes: color oil paintings, posters, business cards, binding covers, commodity signs and printed textiles.