Screen printing refers to the use of silk screen as a plate base, and a screen printing plate with graphics and text is made by a photosensitive plate-making method. Screen printing consists of five elements, screen printing plate, squeegee, ink, printing table and substrate. Printing is carried out by using the basic principle that the mesh of the screen printing plate can pass through the ink, and the mesh of the non-graphic part cannot pass through the ink. When printing, pour ink at one end of the screen printing plate, apply a certain pressure to the ink part on the screen printing plate with a scraper, and move at a constant speed towards the other end of the screen printing plate. Part of the mesh is extruded onto the substrate.
Laser printing technology uses a laser beam to quickly "project" digital graphics or documents onto a photosensitive surface (photosensitive drum). Electron discharge will occur at the position hit by the laser beam, and then due to static electricity, it will attract some slender "Toner", the printing effect will come out. Because the core of printing technology is laser imaging technology, this printing technology is called "laser printing technology".
So what are the differences between the two? Today, Oulette is here to give you a little science.
1. In terms of price: the approximate price of a screen printing machine is between 20,000 and 40,000. At the same time, it is necessary to buy ink and other consumables after purchase. The minimum cost after five years of use ranges from 50,000 to 90,000. ; The approximate price of the laser marking machine is between 48,000 and 80,000 (based on configuration pricing), and there is almost no cost consumption within five years of purchase.
2. From the product inventory: screen printing is only suitable for mass production, but today's society is changing so much every day, when the inventory is not half used, it is found that changing the style or text form is easy to cause learning waste, and also The cost is increased; but laser marking is different. Once the computer is typesetting at will, how many marks are used, which saves time and is convenient. At the same time, it is also important to keep up with the changes of the times, which reduces a lot of costs.
3. From the point of view of the mechanical use process: the screen printing machine needs to make a template during the use process, which is troublesome to operate manually, and at the same time, it is very troublesome to clean up after use; but the laser marking machine is different. During the process, as long as the typesetting is done on the computer, the machine can automatically mark and engrave without any manual operation.
4. When the printing accuracy is particularly high in screen printing, it is very expensive to make a stencil, and it may not be printed clearly; but the laser marking machine is different. The beam and spot diameter are generally less than 0.5mm, which can be engraved. Any high precision pattern.
5. In the process of printing and marking: screen printing still needs a force in the end, which is easy to deform the surface of the product or damage the surface of the product; but laser marking is non-contact, does not damage the surface of the workpiece, and will not cause damage to the surface of the product. Material deformation.
6. The process of screen printing can only be used for relatively flat products. If there are some bumps, it cannot be solved completely; but laser marking is different. It can be used on round, uneven surfaces, and irregular surfaces. It can be marked, and the effect is very good.
7. The process cycle of screen printing is long and the production is troublesome; but the laser marking machine has only one process, and the marking cycle is short, so it can be used for marking at any time.