A printer is one of the output devices of a computer, used to print the results of computer processing on relevant media. It is a device that prints the results of computer operations or intermediate results on paper in the form of numbers, letters, symbols and graphics that humans can recognize, in accordance with the prescribed format. Printers are developing in the direction of being light, thin, short, small, low power consumption, high speed and intelligent. Let's learn who invented the first printer and when. Are you interested? Contents of this article 1. Who invented the first printer and when? 2. Several types of printers 3. What to do if the printer shows sleep status 1Who invented the first printer and when?Different sources have different opinions on when, where and by whom the world's first typewriter was invented. The earliest record is in 1714, the year when Queen Anne of England died, when a British man named Henry Mill first registered an invention patent. It is said that Mill invented this machine. According to Americans, the first American typewriter patent was registered by William Austin Burt of Detroit in 1829, and its name was "Burt Family Alphabet Typewriter". Austrians believe that the first commemorative typewriter was made by carpenter Peter Mijenhofer in 1864. There are other claims, such as the "as fast as a fountain pen" machine in Marseille, France. At that time, the inventors of this machine were probably mostly carpenters, watchmakers or mechanical craftsmen. 2Several types of printers1. Dot matrix printer: It has a relatively simple structure, low consumables cost, high-speed line skipping capability and multiple copying function; it has high cost performance and no special requirements for printing paper. Its disadvantages are poor printing quality, high noise and slow printing speed. The biggest advantage of dot matrix printer is that it can print bills. It has good precision positioning and copying capabilities, can print on very thick printing media, and has a variety of paper feeding methods. It is mainly used for printing pressure-sensitive carbon paper such as bills. Common uses are invoices, express delivery orders, triplicate forms, etc. It is suitable for printing various reports, passbooks, various bills and cards. 2. Inkjet printer: It can print monochrome or color text or images on ordinary paper. Its printing speed and printing quality are between laser printer and dot matrix printer. Its characteristics are large output format and low cost of the whole machine. The disadvantage is that it cannot copy and reproduce, and can only print one copy. The mechanical structure of inkjet printer is relatively simple, light in size, low in power consumption and low in noise. The biggest disadvantage of inkjet printer is that the cost of consumables is high and there is no multi-layer copying ability. 3What to do if the printer shows sleep statusThe printer shows sleep mode, which is a measure taken by the printer to save power. It is recommended to press any button on the printer to reactivate the printer. A printer is one of the output devices of a computer, used to print the results of computer processing on relevant media. There are three indicators to measure the quality of a printer: print resolution, print speed and noise. There are many types of printers. According to whether the printing element has an impact action on the paper, they are divided into impact printers and non-impact printers. According to the structure of printed characters, they are divided into full-width character printers and dot matrix character printers. According to the way a line of characters is formed on paper, they are divided into serial printers and line printers. According to the technology used, there are cylindrical, spherical, inkjet, thermal, laser, electrostatic, magnetic, light-emitting diode and other printers. The printer was invented by John Watt and Dave Donald. It is a device that prints the results of computer calculations or intermediate results on paper in the form of numbers, letters, symbols and graphics that humans can recognize, in a prescribed format. Printers are developing in the direction of being light, thin, short, small, low power consumption, high speed and intelligent. |
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