What is the structure of the printer? The main structure and function of the printer

According to the working principle of printers, printers are divided into two categories: percussive and non-percussive. There are two main types of string dot matrix character non-impact printers: inkjet and thermal printers. Inkjet printers.

The most widely used printer. The basic principle is that the charged inkjet mist dots are deflected by the electrodes to form the desired glyph directly on the paper. The advantage is that the dots that make up the characters and images are much smaller than dot matrix printers, resulting in high resolution of the character dots and high print quality and clarity.

Character size and font can be changed flexibly and conveniently. Printing is done on plain paper, but this typewriter can also be used to print directly on certain products. There is no mechanical wear and tear in the formation of characters and graphics, and the energy consumption of printing is low.

Print speeds up to 500 characters in seconds. Charge-controlled (high-pressure) and random inkjet (negative pressure) inkjet technologies are widely used, and in recent years, dry inkjet printing technology has emerged. Thermal printers.

The heat generated by the impulse current flowing through the resistor at the tip point is transferred to the thermal paper, causing it to change color when heated, resulting in the printing of characters and images. The main features are noiseless, light and small structure, and clear printing. The disadvantages are slow speed and poor handwriting preservation.

Line dot matrix character non-impact printers mainly include laser, electrostatic, magnetic, and light-emitting diode printers. Laser printer. After the laser beam emitted by the laser source is modulated by the acousto-optic deflector controlled by the character lattice information, it enters the optical system, and scans the rotating photoreceptor transversely through a multi-faceted prism, so that the electrostatic latent image of the character or image is formed on the optical guide film layer on the photoreceptor drum, and then the required character or image is obtained on the paper after development, transfer and fixing.

The main advantage is the high printing speed, which can reach more than 20,000 lines. The printing quality is high, the noise is low, ordinary paper can be used, and characters, graphics and images can be printed. Due to the high printing speed, from a macro point of view, it is like printing one page at a time, so it is also called a page printer.

Electrostatic printers. The impulse voltage is applied directly to a special paper with a layer of dielectric material in order to obtain an electrostatic latent image on the dielectric, which is developed and heated to form characters and images. It is characterized by high printing quality, non-fading handwriting, long-term storage, low power consumption to generate latent images, no noise, simple and reliable.

However, special paper is required and the cost is high. Magnetic printers. It is the application and development of electronic photocopying technology.

The use of magnetic-sensitive media to form a latent image of characters does not require a high-power laser source, which has the advantage of being insensitive to humidity and temperature changes. The printing speed can reach 8000 lines. The structure is simple and the cost is low.

Light-emitting diode printers. Except for the use of light-emitting diodes as the light source, its working principle is similar to that of laser printers. The use of light-emitting diodes reduces costs and power consumption.

Lasers type black text. Inkjet Color**. Needle bills.

The printer is mainly composed of the following four parts:

1. The inkjet part: the main thing is the word car, the paper rubbing component and the lateral movement is the X-axis;

2. Dot matrix printer.

Fuselage shell, paper feeder, print head, ribbon, paper detector, power supply, control circuit deficit stove, transmission system, etc.;

3. Laser part: mainly toner cartridge, paper feeding part, fixing and laser, hub, development;

4. Scanning assembly, laser generator assembly, fuser assembly, drum assembly, development component, paper discharge assembly, paper feeding assembly, etc.

The function of the printer: to print the computer's calculation results or intermediate results on paper in accordance with the prescribed format in numbers, letters, symbols and graphics that can be recognized by humans.

Due to the precision of the internal parts of the printer, even ordinary wiping or lubricating oil may have a non-negligible impact on the printing quality, and the internal cleaning must be cautious.

Printer cartridges will have some liner that absorbs excess toner in the drum system that transports the paper. The user can take it out of the machine and clean it up by hand. A new liner is usually included in the new cartridge as well.

They are the transfer part of the printer, dragging the paper from the paper tray to the inside of the printer, but in the process, the oil and dust stained on the paper will also settle on the roller, and if it is not cleaned for a long time, it will lead to paper jams and paper feeding errors.

The printer is mainly composed of the following four parts:

1. The inkjet part: the main thing is the word car, the paper rubbing component and the lateral movement is the X-axis;

2. Dot matrix printer.

Fuselage shell, paper feeder, print head, ribbon, paper detector, power supply, control circuit, transmission system, etc.;

3. Laser part: mainly toner cartridge, paper feeding part, fixing and laser, hub, development;

4. Scanning component, laser generator component, fuser component, light drum component, developing component, Zheng coarse paper arrangement component, paper feeding component, etc.

Really printer copy

The next two parts of the BAI are composed.

du: The inkjet part: zhi is mainly.

The cart, the DAO component, and the lateral movement are the X-axis.

Dot matrix printer: body housing, paper feeder, print head, ribbon, paper detector, power supply, control circuit, transmission system, etc.

3.Laser part: mainly toner cartridge, paper feeding part, fixing and laser, hub, development, scanning assembly, laser generator assembly, fusing component, drum assembly, developing component, paper discharge assembly, paper feeding component, etc.

Different printers are composed in different ways

From the outside, the inkjet printer is mainly composed of several parts, such as the shell, the control panel, the interface, the paper holder, the cardboard rail, the paper feeder, and the paper dispenser expansion board;

The interior of an inkjet printer is composed of an inkjet printer, which is mainly composed of mechanical systems and circuits.

1) The automatic feeding system of the printer is mainly composed of paper feeder, paper feeding stepping motor, paper picking stick and other components. The paper feeder is matched with the paper feed stepper motor, and the paper supply stick can be turned to make the printer in the vertical direction.

Paper feeding. After a long period of use, most inkjet printers will accumulate too much paper scraps and dust due to the paper feeding system, which will affect the smooth printing and paper feeding, and even cause paper jams, so the paper feeding system should be cleaned regularly.

At the top left of the printer's paper feeder, there is also a paper guide that adjusts the paper width. The paper guide is to ensure that the loaded paper is straight, and the guide rail is adjusted to fit the width of the paper.

The next thing you can see is the press roller for this printer. If you are printing on paper with a lot of paper powder, a lot of paper scraps or paper powder may be attached to this part for a long time, which is also more likely to cause paper jams. The paper is driven forward by the paper feeding stepper motor, and then the paper is driven through the paper discharge stick and conveying gear of the paper output system.

Finally, the paper comes out of the dispenser.

2 Drive motor system.

1) The left position behind the printer is the trolley stepper motor, which is connected to the circuit system through the flat feeder, and then the trolley stepper motor is controlled by the trolley stepper motor chip of the circuit system to move.

Immediately next to the trolley's stepper motor is the printhead bracket (some printers are called "walking trolleys"). It is driven by the trolley stepper motor to drive the belt to drive the print head bracket to slide on a round steel shaft, and then drive the ink cartridge to achieve printing. This belt should not be too loose or too tight, too loose may not allow the cartridge to be accurately positioned, too tight may not be able to drive the cartridge for printing.

On the top of the printhead holder is a paper thickness adjustment lever (different printers, the design parts may be different) when you.

When using thicker paper, it can be adjusted.

Explain the principle of the laser printer while dismantling, the most detailed tutorial.