What Is a Laser Printer?

Laser printers were born out of the laser phototypesetting technology of the late 1980s, and were popular in the mid-1990s. It is a printout device that combines laser scanning technology with electrophotographic technology. Its basic working principle is that the binary data information transmitted by the computer is converted into a video signal by the video controller, and then the video interface / control system converts the video signal into a laser driving signal, and then the laser scanning system generates the character information containing The laser beam is finally imaged by an electrophotographic system and transferred to the paper. Compared with other printing equipment, laser printers have the advantages of fast printing speed and high imaging quality, but the use cost is relatively high.

laser printer

Laser printers were born in the late 1980s

Laser technology appeared in the 1960s,

The composition, design structure, control method, and components of control devices and components required for the laser printer's working process will vary depending on the brand and model, such as:

The polarity of charging the photosensitive drum is different.

The parts used for charging the photosensitive drum are different. Some models use the electrode wire discharge method to charge the photosensitive drum, and some models use a charging roller (FCR) to charge the photosensitive drum.

Laser printers can be divided into three categories according to their print output speed: low-speed laser printers (output 10 to 30 pages per minute); medium-speed laser printers (output 40-120 pages per minute); high-speed laser printers (output 130-130 per minute) 300 pages).

Laser printer is made by

Laser printers have high-voltage circuits and high-temperature circuits, so electronic radiation and thermal radiation have certain effects on the human body. Care should be taken to protect pregnant women and young children or to stay away from these devices. During the printing process, high temperature heating will bring out some toner particles, which is not good for breathing. You should try to avoid working at the laser printer for a long time.

1. Output full sheet of black paper

Possible cause:

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The laser printer was invented by Xerox in the late 1960s.

The technical structure of laser printing is much more complicated than inkjet, which increases the cost of the product. Therefore, inkjet occupies a clear advantage in the initial investment. Entry-level inkjet printing only costs a few hundred yuan, and some products are even more expensive. Low, while black and white lasers are hovering at the threshold of 1,000 yuan. Therefore, there is also a view that the hard-hitting that requires relatively high up-front investment cannot be compared with the cheap and inexpensive hard-hitting. In fact, this view ignores a very critical hidden factor, that is, jet printing has not always been so low, and its products have gone through a long process from the birth to the popular application. On the other hand, the price of hard hits is being explored step by step. It is unknown whether it can be reduced to the same price as hot hits, but it will be sooner or later to break through the psychological price of consumers. The price of about 1,000 yuan is actually not high for business applications. There are many examples of successful products on the market, such as the Samsung M L-1610 and the smallest and lightest black-and-white laser machine. Samsung SCX-4200, the hot selling of these two products fully shows that the price threshold is not as difficult to cross as expected.

Another aspect that determines the cost is the later investment of the product, especially the later consumables investment. Behind the usual price reductions and sales, the significance of the product itself has been weakened to a certain extent, and the input of consumables has become the most critical factor influencing TCO. Generally speaking, the original ink cartridges used by inkjet printers cost about one to two hundred yuan, and can print four to five hundred ordinary A4 text documents, ignoring the cost of the paper. The average cost of printing per page is about 0.2 to 0.5 yuan. For a laser printer, a toner cartridge costs about 500 yuan (black and white), irrespective of the consumption of the toner cartridge (the life of the toner cartridge is usually very high, and it is not allowed to be counted as a consumable under less strict conditions). To 0.1 yuan. In this way, if you print a large number of documents, you can save a few jets of money in a month, and the advantage of smashing in the overall cost investment is immediately apparent.

Compared with dot matrix printers and inkjet printers, laser printers have significant advantages.

(1) High density. Laser printers have a minimum print resolution of 300dpi, as well as high resolutions such as 400dpi, 600dpi, 800dpi, 1200dpi, and 2400dpi and 4800dpi.

(2) High speed. Laser printers have a minimum print speed of 4 ppm, typically 12 ppm and 16 ppm, and some laser printers can achieve print speeds of more than 24 ppm.

(3) Low noise. Generally below 53dB, it is very suitable for use in quiet office places.

(4) Strong processing capacity. The controller of the laser printer has a CPU and a memory. The controller is equivalent to the computer's motherboard, so it can perform complex word processing, image processing, and graphics processing. This is not possible with dot matrix printers and inkjet printers. The difference between a page printer and a line printer.