When each of us can buy products in the supermarket, in addition to choosing the product brand and viewing the product price, we will also carefully check the production date on the product packaging, check whether the product, especially the food product, expires and whether it is a fresh product that has just been produced recently. The product packaging has been designed and manufactured in batches for a long time. Some necessary information about the product is printed on the outer packing. However, because the production date is different, therefore, it is not possible to mark the product in advance. The inkjet printer makes it possible to mark the day with time changes on the outer packaging. Common inkjet printer types include small inkjet printer, desktop inkjet printer, economical inkjet printer, automatic inkjet printer, and handheld inkjet printer. Generally, small inkjet printer can meet the production needs. At the time when the final production of the product is to be completed before the product leaves the factory, the production date of the product is marked on the outer packing with the help of the inkjet printer, an advanced inkjet printer, such as a desktop inkjet printer of the alt390 model, can mark the unique code of each product on the product. |