No, the printer can print pictures as well as documents. A printer is one of the output devices of a computer. It is a device that prints computer operation results or intermediate results on paper in a prescribed format in the form of numbers, letters, symbols and graphics that humans can recognize.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
No, the printer can print both pictures and documents.
Printer is one of the output devices of the computer, used to print the results of computer processing on relevant media.
The printer was invented by John Water and Dave Donald. A device that prints computer operation results or intermediate results on paper in a prescribed format in the form of numbers, letters, symbols and graphics that can be recognized by humans. Printers are developing towards light, thin, short, small, low power consumption, high speed and intelligence.
There are three indicators to measure the quality of a printer: printing resolution, printing speed and noise. There are many types of printers. Depending on whether the printing element hits 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 words is formed on paper, they are divided into serial printers and line printers. According to the technology used, it can be divided into cylindrical, spherical, inkjet, thermal, laser, electrostatic, magnetic, light-emitting diode and other printers.
Dot matrix printer
Dot matrix printers have occupied an important position for a long time in the history of printers. From 9-pin to 24-pin, it can be said that dot matrix printers The history of conventional printers stretches throughout these decades. The reason why dot matrix printers have been so popular for a long time is inseparable from its extremely low printing cost, ease of use, and special use for document printing. Of course, its low print quality and loud working noise are also the root causes of its inability to adapt to the needs of high-quality, high-speed commercial printing, so it can only be used in banks, supermarkets and other places where it is used for ticket printing. Saw traces of it.
Color inkjet printer
Color inkjet printer has occupied the vast mid-to-low-end market because of its good printing effect and low price. In addition, inkjet printers also have more flexible paper processing capabilities. In terms of the choice of printing media, inkjet printers also have certain advantages: they can print ordinary media such as envelopes and letter paper, as well as various types of film, photo paper, Special media such as CD covers, roll paper, and T-shirt transfer paper will be introduced as key points below.
Laser Printer
Laser printer is a new product of high-tech development, and it is also a model that is expected to replace inkjet printers. It is divided into black and white and color. Two, it provides us with higher quality, faster and lower cost printing methods. Among them, the price of low-end black and white laser printers has dropped to a few hundred yuan, reaching a level acceptable to ordinary users. Its printing principle is to use a raster image processor to generate a bitmap of the page to be printed, and then convert it into an electrical signal and a series of pulses sent to the laser transmitter. Under the control of this series of pulses, the laser is regularly release. At the same time, the reflected light beam is sensed by the receiving photosensitive drum. When the laser is emitting, a dot is generated, and when the laser is not emitting, it is blank, thus printing a line of dots on the receiver. The receiver then rotates a small fixed distance and continues repeating the above operation. As the paper passes over the photosensitive drum, the colorant on the drum is transferred to the paper, creating a bitmap of the page. Finally, when the paper passes through a pair of heating rollers, the colorant is heated, melted, and fixed on the paper, completing the entire printing process. This entire process is accurate and efficient. Although laser printers are much more expensive than inkjet printers, in terms of printing cost per page, laser printers are much cheaper. The price of color laser printers is generally around 2,000 yuan.
Other printers
In addition to the above three most common printers, there are also several printers used in professional applications such as thermal transfer printers and large-format printers. type. Thermal transfer printers use transparent dyes to print. Its advantage lies in professional high-quality image printing. It can print out continuous-tone pictures that are close to photos. It is generally used for pre-press and professional graphics output. Large-format printers have basically the same printing principle as inkjet printers, but the printing width can generally reach more than 24 inches (61cm). Its main uses have been in the engineering and construction fields. However, with the improvement of the durability of its ink and the increase of graphic resolution, large-format printers have begun to be increasingly used in advertising production, large-format photography, art portraits, interior decoration and other decorative and publicity fields, and have become printers. An important member of the family.
The United States ZCorp is a professional 3D printer manufacturer. It produces the world's fastest 3D printer and the only true color 3D printer. Its extremely low consumables usage cost makes it favored by many users around the world. Israel's 2Objet rapid prototyping machine PolyJet Technology, Eden series 3D printer, 16 micron ultra-high resolution, FullCure series materials, is the most easy-to-use 3D printing rapid prototyping machine in the world with the highest molding accuracy (layer thickness is only 0.016mm)
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