Ten famous printers: HP 1606, Canon, Epson, Samsung, Lenovo, Fuji Xerox, Brother, Lexmark, Konica Minolta, OKI. 1. HP HP 1606( 1939, USA, Fortune 500, Top Ten Printer Brands, 1939, China Hewlett-Packard Co., Ltd., California, USA) is a black-and-white laser printer that supports double-sided printing and network printing. The black-and-white printing speed is 25 pages/minute, the first page output time is 7 seconds, the printing resolution is 600×600dpi, and the monthly printing load is 800. 2. Canon (1937, founded in Japan, is a world-famous brand, one of the top ten printer brands, and the world-leading integrated group for producing image and information products) is the world-leading integrated group for producing image and information products in Japan. Since the establishment of 1937, Canon has been globalized and its business has expanded to various fields after years of unremitting efforts. Canon's product line is distributed in three areas: personal products, office equipment and industrial equipment. The main products include cameras and lenses, digital cameras, printers, copiers, fax machines, scanners, broadcasting equipment, medical equipment and semiconductor production equipment. 3.Epson Epson (1942 was founded in Nagano, a famous brand, one of the top ten printer brands, and a global leader in digital imaging), as a wholly-owned company of Seiko Epson China, using Seiko's advanced technology and management experience, set up a wholly-owned or joint venture foreign-funded enterprise in China, or buy an existing company to manufacture and sell advanced products locally in China. At the same time, strengthen the coordination of Seiko Epson's investment in China to meet customer requirements and expand Seiko Epson. 4. Samsung Samsung (1938, South Korea, Fortune 500, Top Ten Printer Brands, Samsung Group, the largest enterprise group in South Korea) is the forerunner of the Wi-Fi printing boom. Samsung has been committed to finding and meeting the various office needs of users in China. Its Wi-Fi wireless printing products have fully covered black-and-white laser printers, black-and-white multifunctional printers, color laser printers and color multifunctional printers, which are functional enough to meet the office needs of different users. 5. Lenovo (Beijing, 1984, China well-known trademark, top ten printer brands, China well-known trademark, Lenovo Group) is committed to developing, manufacturing and selling reliable, safe and easy-to-use technical products and high-quality professional services to help global customers and partners succeed. Lenovo mainly produces desktop computers, servers, notebook computers, smart TVs, printers, PDAs, motherboards, mobile phones, all-in-one machines and other commodities. 6. Fuji Xerox (Fuji Xerox Company, 1962, the top ten printer brands in Japan and the fourth largest manufacturer of digital and information technology products in the world) 7. Brother (1908 was born in Japan, a world-class brand, top ten printer brands, the world's first high-speed dot matrix printer) 8. Lexmark (1965438) is the only printer manufacturer in the world. Konica Minolta (Konica Minolta, 1873 was founded in Japan, one of the top ten printer brands, and a supplier of large-scale office imaging equipment) 10. OKI( 188 1 year, Japan, the earliest manufacturer of electronic communication products in Japan, is one of the top ten brands of printers. Because the internal parts of the printer are relatively precise, even ordinary wiping or lubricating oil may have an immeasurable impact on the printing quality, so internal cleaning must be cautious. According to my experience, the parts that can be cleaned are listed below for your reference. Toner protection device The ink cartridge of the printer has some pads, whose function is to absorb the excess toner in the roller system that transports the paper. Users can take it out of the machine and clean it manually. Usually, a new ink cartridge will include a new gasket. The paper feed roller is the conveying part of the printer, which drags the paper from the paper slot to the inside of the printer. However, in this process, the oil and dust on the paper will also be deposited on the drum. If it is not cleaned for a long time, it will lead to paper jam and paper feeding error, which is also the most common fault of the printer. Coronal dust deposition will affect the efficiency of static electricity (especially for some old laser printers). Vents are similar to the inside of a computer. Many laser printers also have built-in fans, which will be blocked by dust and dirt all the year round. We must ensure that the vents and fan blades are cleaned regularly to keep the air circulating inside the printer. There are serial printers and line printers according to the way a line of words is formed on paper. According to the technology adopted, there are cylindrical, spherical, inkjet, thermal, laser, electrostatic, magnetic and LED printers.