10 years of experience in production, Ru0026D and sales of digital direct-injection machines will provide you with some tips and methods: Method 1: From the appearance of the structure, the structure determines everything. What kind of structure is stable? Look at the shape first. The head is large and the tail is small, so it will inevitably vibrate when moving, and the biggest impact of vibration is the printing accuracy. Method 2: Look at the vividness of colors The more colors the machine, the better the color reproduction. The inkjet printer prints more brilliant colors, better reduction, and the printed portraits are realistic and natural. Method 3: Look at the accuracy No matter what type of digital direct inkjet printer, the most basic requirement is printing accuracy. The method to test the printing accuracy is: print the 3rd character. The product with clear printing, no ghosting or blurring is qualified. If there is a ghost image, it means that the direct-injection machine vibrates too much during the printing process, which is caused by the unreasonable structural design, which prevents the printing head's running force from being well decomposed and released. If no words can be recognized at all, then this printer can already be passed. Method 4: Look at the performance The bosses who do printing processing must know that the setting is the most important in mass production. If the position is not accurate, the rejection rate will increase. At this time, it is particularly important to choose a direct injection machine with stable performance. The method is: print the cross, repeat the print ten times, and look at it with a 40-fold magnifying glass. If it overlaps, then this machine can be bought. If there is a little mistake, you can pass. Or directly use the silk screen method to test the sets. Print the blue dots first, and then print red on the basis of blue. Use a 40x magnifying glass to see. If you can't see the blue, it means the machine has high precision. If one of these two methods fails, the muddy water should not drip.