For printers, the main characteristics of LED imaging technology are that the volume of light source is greatly reduced, the light transmission distance is short, and the printing speed is ensured to be faster. Moreover, with the continuous reduction of direct storage of LED, the resolution can be continuously improved, which has great potential in the future.
Laser printer uses laser as light source and needs high voltage excitation, so it consumes high energy and ionizes oxygen in the air into ozone. The optical principle of laser technology is very complicated, so the internal structure will be more complicated.
At present, OKI is the owner and main promoter of LED printing technology. I went to official website to have a look, and there are many product categories. If there is a demand for printers, LED printers are an ideal choice.
Question 2: What is the part name of the printer? The question you ask is how many books can be answered. There are needle printers, inkjet printers, laser printers, thermal printers and so on. , and 3D printers. Many, the composition principle is different. If you want to know this, I recommend it to you-Zhongguancun Office Forum. The things in this jar are rich and colorful. You must like them. oabbs.zol/
Question 3: What parts does a printer consist of? What is its principle? In a small range, a single selenium can print about 65,438+0,500-2,000 sheets of paper. After printing 20,000-30,000 pages, the fixing film will naturally wear and need to be replaced, and the rubber inside the fixing lower roller needs to be replaced after 30,000 pages. As for heating ceramics and shaft sleeves, there are several sets of 654.38+ 10,000 pages that need not be changed, and the quality is good. Although the technology of inkjet printer has developed to a very mature level, its inherent characteristics still make it have some shortcomings, especially the printing speed and quality are still not as good as laser printers. It is necessary for us to talk about laser printers here. Laser printer is a high-speed, high-precision and low-noise non-contact printer. It is a combination of laser scanning technology and electrophotography technology. Laser printers have the highest printing quality and the fastest printing speed, and can output beautiful manuscripts and slides directly used for printing and plate making. Although the cost of purchasing and consumables is relatively high, it is becoming more and more popular because of its excellent printing effect. I. Composition of the laser printer The laser printer consists of three parts: a laser scanning system, an electrophotographic system and a control system, wherein the laser scanning system includes a laser, a deflection modulator, a scanner and an optical system. Its function is to form an electrostatic latent image by scanning a laser beam. An electrophotographic system consists of a photosensitive drum, a high-voltage generator, a developing and fixing device and a paper feeding mechanism. Its function is to convert electrostatic latent image into visual output. The printing principle of laser printer is similar to that of electrostatic copying, but the difference is that electrostatic copying forms a latent image by scanning with visible light, while laser printer forms a latent image by scanning with a modulated laser beam output by a computer. Second, the working principle of the laser printer 1, the basic principle of the laser printer Laser printer was born out of the laser phototypesetting technology in the late 1980s and was popular in the mid-1990s. It is a printing output device that combines laser scanning technology and electrophotography technology. Its basic working principle is that the binary data information transmitted by the computer is converted into a video signal through a video controller, and then the video signal is converted into a laser driving signal through a video interface/control system, and then a laser scanning system generates a laser beam carrying character information, and finally the laser beam is imaged and transferred to paper by an electrophotographic system. Inside the laser printer, there is a key component called photosensitive drum. When the laser is irradiated on the photosensitive drum, the irradiated photosensitive area will generate static electricity and suck up fine substances such as carbon powder. The working steps of the laser printer are as follows: 1. The printer drives the laser to sweep the photosensitive drum in a certain way, and the drum rotates once to print a line corresponding to the printer; 2. The toner box absorbs the toner to the sensitive area through the toner; 3. Turn the toner box to make it contact with the printing paper, and attach the toner to the paper; 4. Use the heating part to melt the toner on the printing paper. Consumables (parts that need to be replaced regularly) of laser printers include: toner cartridge, photosensitive drum or photosensitive belt, charging unit, fuser, mixed toner cartridge and waste toner cartridge, among which toner cartridge is the one with the highest replacement frequency, while photosensitive drum or photosensitive belt is also the one with higher replacement frequency and higher price. 2. The principle of color printing The basic structure of a color laser printer is the same as that of a black-and-white laser printer, and the printing controller, interface, control mode and control language are completely the same, so the data transmission, data interpretation and printing control flow are basically the same. As for the print controller, because the printed content contains color information, the data generated by the computer on the color laser printer is much larger than that of the black-and-white laser printer, which puts forward higher requirements for the performance of the print controller. Therefore, the speed of the internal processor of a general color laser printer is higher than that of a black-and-white laser printer, and the configured memory is also larger than that of a black-and-white laser printer. At present, the more popular printing languages of color laser printers are PCL and PostScript. In recent years, with the application of color laser printers in general business office, these users are not as strict with the accuracy of graphics and colors as some professional users, so GDI mode has also been applied in some low-end color laser printers. With the improvement of PC performance, GDI mode has less and less influence on printer performance, but it can greatly reduce the cost of color laser printers, and also make the price of color laser printers begin to decline, laying the foundation for the popularization of color laser printers. Color laser printers and black-and-white laser printers >>
Question 4: What are OPC, charging roller, big scraper of developing roller, small scraper, conductive plastic, developing sleeve, powder bin, waste powder bin and stirring rod? Some toner cartridges are charged by charging electrode wires, such as Lenovo and Brother! All toner cartridges have electrode wires!
Question 5: What are the parts of the printer? The printer has many parts.
Inkjet is mainly composed of pickup components, and the horizontal movement is X axis.
The laser is mainly a fixed laser of the paper feeding part of the toner box.
Question 6: What are the main parts of a printer? Development of shell and drum assembly and fixing of motor gear sensor clutch
circuit board
Question 7: What are the parts of an inkjet printer? ink-jet printer
According to the working principle, inkjet printers can be divided into solid inkjet and liquid inkjet. Solid-state inkjet is a patented technology of Tektronix. The phase change ink it uses is solid at room temperature. When printing, the ink is heated and liquefied, then sprayed on the paper and infiltrated. Therefore, the ink has good adhesion and extremely bright color. However, this kind of printer is expensive and generally suitable for professional users.
What we usually call an inkjet printer refers to a printer that uses liquid inkjet technology. As early as 65438+60s, this ink-jet principle was used by British physicist LordKelivin to record the waveform of oscilloscope. After the development and perfection of 100 years, this inkjet principle has been applied to inkjet printers as the printing output equipment of computer systems. During this period, the inkjet technology itself has made great progress, and the inkjet principle and ink preparation have made great progress. Since then, inkjet printers have entered offices and homes, and are favored by users for their noiseless working mode, exquisite output quality and low price.
In principle, liquid inkjet printer technology can be divided into two types, one is continuous inkjet mode, and the other is intermittent inkjet mode. The difference between these two inkjet printing technologies is that continuous inkjet printing is continuous inkjet printing, but when printing is not needed, the ejected ink is stored in a special abdominal cavity, filtered and re-injected into the ink box for reuse. This mechanism is more complicated. Intermittent inkjet method is simpler, it only ejects ink in the printing process, so there is no need for filters and complicated ink circulation system. The driving part of this intermittent inkjet mode has two different technologies, one is piezoelectric intermittent inkjet and the other is thermal intermittent inkjet.
Piezoelectric intermittent inkjet uses a special piezoelectric material. When a voltage pulse acts on the piezoelectric material, it will deform and eject ink from the nozzle and shoot it on the paper. The thermal intermittent inkjet method uses a heating resistor. When the electric signal acts on it, it will generate heat quickly, so that a thin layer of ink at the bottom of the nozzle will keep the temperature above 900 degrees Fahrenheit for a few millionths of a second, and then evaporate to produce bubbles. With the increase of bubbles, ink is ejected from the nozzle, and ink drops are formed at the tip of the nozzle. Small ink droplets overcome the surface tension of ink and are sprayed onto the paper to form dots. At this time, you may ask: Can the printed results be satisfactory? In fact, we don't have to worry, because ink drops are generally only about one millionth of a tear; When the heating resistor cools down, the bubble will automatically go out, and the attractive force generated when the bubble bursts will suck the new ink in the ink storage box to the nozzle, waiting for the next work.
Question 8: There are many types of stylus printers, which are generally divided into two parts: printing mechanism and control drive circuit. There are three kinds of movements when the stylus printer works normally, that is, the lateral movement of the printing head, the longitudinal movement of the printing paper and the injection movement of the printing needle. These movements are controlled by software and driven by some precision machinery. The printing mechanism mainly includes carriage and transmission mechanism, printing needle control mechanism, ribbon drive mechanism, paper feeding mechanism and printer status sensor. These mechanisms are all precise mechanical devices, which ensure that various mechanisms can realize the following movement. (1) bracket and transmission bracket are the carriers of the print head. The print head moves horizontally through the carriage transmission system, and then the printing needle hits the ribbon to print. The power source of the Chinese character car is generally a stepping motor, and the rotation of the stepping motor is transformed into the lateral movement of the Chinese character car through the transmission device. Generally, wire rope or synchronous toothed belt is used for transmission. (2) Printing needle control mechanism Printing needle is the key to correct printing. The printing needle control mechanism realizes the needle discharging and needle retracting actions of the printing needle. Usually, the action of printing needle is controlled by electromagnetic principle. (3) The printing needle of the ribbon drive mechanism impacts the ribbon, and the ink on the ribbon prints characters or graphics on the printing paper. In the printing process, when the print head moves left and right, the ribbon drive mechanism drives the ribbon to rotate back and forth at the same time, constantly changing the position where the ribbon is hit by the printing needle, thus ensuring the uniform wear of the ribbon, not only prolonging the service life of the ribbon, but also ensuring the uniform color of printed characters or graphics. The ribbon drive mechanism generally drives synchronous toothed belt (such as LQ- 1600K) or steel (nylon) wire rope to drive the ribbon uranium to rotate, or two independent motors (such as some color printers) can be used to drive the ribbon forward and backward respectively. (4) Paper feeding mechanism This mechanism realizes the longitudinal movement of printing paper. When a line is printed, it feeds paper. Paper feeding methods generally include friction paper feeding, gear paper feeding and platen paper feeding. Its power mode is to convert the rotation of stepping motor into the movement of paper through traction mechanism. (5) Printer status sensor For different printers, the sensor settings are different. There are usually home position sensors (to detect whether the font bracket stops at the left home position), paper exhaustion sensors (to detect whether the loaded printing paper is used up and give an alarm when it is used up), timing sensors (to detect the instantaneous position of the font bracket) and cover state sensors (to detect the abnormal operation of opening the printer cover during printing) and so on. (1) control circuit The control circuit of the printer adopts microcomputer structure, so the printer is a complete microcomputer. From the category of processors, some are composed of single-chip microcomputer extended memory and interface circuit, and some are designed by CPU (as processor). From the composition structure, there are single CPU structure and master-slave CPU process control structure. Various controls on the printer are executed by software. Font library and control program are stored in ROM, and user-defined characters are stored in line cache ram. (2) Drive Circuit The function of the drive circuit is to drive the paper feeding motor, carriage motor and printing needle to eject the needle under the control of the control circuit. (3) Interface Circuit The connection between the printer and the host includes serial interface, parallel interface and USB interface. (4) The DC voltage stabilizing circuit provides various DC power supplies for the printer.
Question 9: What are the components of a stylus printer? There are many types of stylus printers, which are generally divided into two parts: printing mechanism and control drive circuit. There are three kinds of movements when the stylus printer works normally, that is, the lateral movement of the printing head, the longitudinal movement of the printing paper and the injection movement of the printing needle. These movements are controlled by software and driven by some precision machinery. Mechanical device Printing mechanical device mainly includes font carriage and transmission mechanism, printing needle control mechanism, ribbon drive mechanism, paper feeding mechanism, printer state sensor, etc. These are all precise mechanical devices, which ensure that various mechanisms can follow the movement. (1) bracket and transmission bracket are the carriers of the print head. The print head moves horizontally through the carriage transmission system, and then the printing needle hits the ribbon to print. The power source of the Chinese character car is generally a stepping motor, and the rotation of the stepping motor is transformed into the lateral movement of the Chinese character car through the transmission device. Generally, wire rope or synchronous toothed belt is used for transmission. (2) Printing needle control mechanism Printing needle is the key to correct printing. The printing needle control mechanism realizes the needle discharging and needle retracting actions of the printing needle. Usually, the action of printing needle is controlled by electromagnetic principle. (3) The printing needle of the ribbon drive mechanism impacts the ribbon, and the ink on the ribbon prints characters or graphics on the printing paper. In the printing process, when the print head moves left and right, the ribbon drive mechanism drives the ribbon to rotate back and forth at the same time, constantly changing the position where the ribbon is hit by the printing needle, thus ensuring the uniform wear of the ribbon, not only prolonging the service life of the ribbon, but also ensuring the uniform color of printed characters or graphics. The ribbon drive mechanism generally drives synchronous toothed belt (such as LQ- 1600K) or steel (nylon) wire rope to drive the ribbon uranium to rotate, or two independent motors (such as some color printers) can be used to drive the ribbon forward and backward respectively. (4) Paper feeding mechanism This mechanism realizes the longitudinal movement of printing paper. When a line is printed, it feeds paper. Paper feeding methods generally include friction paper feeding, gear paper feeding and platen paper feeding. Its power mode is to convert the rotation of stepping motor into the movement of paper through traction mechanism. (5) Printer status sensor For different printers, the sensor settings are different. There are usually home position sensors (to detect whether the font bracket stops at the left home position), paper exhaustion sensors (to detect whether the loaded printing paper is used up and give an alarm when it is used up), timing sensors (to detect the instantaneous position of the font bracket) and cover state sensors (to detect the abnormal operation of opening the printer cover during printing) and so on. Control and drive circuit (1) The control circuit of the printer adopts microcomputer structure, so the printer is a complete microcomputer. From the category of processors, some are composed of single-chip microcomputer extended memory and interface circuit, and some are designed by CPU (as processor). From the composition structure, there are single CPU structure and master-slave CPU process control structure. Various controls on the printer are executed by software. Font library and control program are stored in ROM, and user-defined characters are stored in line cache ram. (2) Drive Circuit The function of the drive circuit is to drive the paper feeding motor, carriage motor and printing needle to eject the needle under the control of the control circuit. (3) Interface Circuit The connection between the printer and the host includes serial interface, parallel interface and USB interface. (4) The DC voltage stabilizing circuit provides various DC power supplies for the printer.
Question 10: What is the fixing component of the printer made of? Pressure roller paper discharge sensor.
Thermal roller fixing lamp thermistor
Fix the thermostat (temperature switch) release claw.