A laser printer is an external device of a computer system, and its function is to express the result of computer processing in a specific form. Laser printers are becoming more and more widely used due to their exquisite print quality. However, such failures often occur during use, which affects the quality of the sample. The following describes the problems encountered by the author and the solutions to them for reference.
1. The laser printer is preheated for more than 2 minutes or the shape is not strong and the text is off.
First, consider whether the indoor temperature is above 20 °C;
The second is to check whether the thermistor is in poor contact or invalid;
The third is to see if the voltage reaches 220V;
The fourth is to look at the paper, whether the toner is too moist, etc.
2, paper jam.
First, check whether the paper size is suitable, the paper is too thick, too thin, and the paper is wet or curled, which will cause paper jam;
Second, coated paper cannot be used in laser printers;
The third is to check if the laser printer separation claws are worn and need to be replaced.
3. If the printed paper sample shows partial or complete words, the toner is uneven and uneven.
The cause of this failure is that the amount of toner in the toner cartridge is insufficient and needs to be replenished.
4. Black spots or black lines appear on the printed paper, and they still appear in the same position after changing the paper.
The cause of the malfunction is that the OPC drum is damaged.
5. If horizontal stripes appear on the printed paper and appear in the same position after changing the paper, it means that the scraper needs to be replaced.
6. If the vertical stripe appears on the printed paper, it will appear in the same position after the paper change. The magnetic roller on the powder box is damaged and needs to be replaced.
7. On the printed paper, the large characters are jagged, and the characters appear to be straight and short, indicating that there is dust on the hexagonal mirror or Fθ objective lens (this problem needs to be handled by professional technicians).
8. Pay attention when replacing toner:
First, the remaining powder of the powder feeding bin and the powder bin must be cleaned up;
Second, after the toner is applied, shake the toner in the powder feeding bin in parallel, and turn the gear several times clockwise to make the toner evenly adhere to the magnetic roller to ensure uniform toner.
9. If the ink color is uneven or the powder leakage occurs after replacing the toner, the fault is still unresolved after printing a few more sheets. At this time, first consider whether the toner is damp, and secondly, consider whether the toner in the powder feeding bin is too full.
10. In the process of sending the laser printer, if the display of the host computer appears “Laser printer power down†and “Peripheral equipment is not readyâ€, it is mainly solved by connecting the signal line.
11. If the laser printer self-tests the pattern is all black, there is no self-test line. “IACK!†appears on the host display, indicating that the video interface card is faulty.
Laser printers should pay attention to the following points during use:
1. The printer case must have a good grounding conductor. Otherwise, static electricity generated by the printer may cause the performance of the machine to be unstable, affecting the quality of the sample, and in severe cases, it may damage the machine and injure people.
2. The printer has more high voltage and higher temperature, so you can't open the case.
3, the power of this machine is large, the frequency of temperature control thyristor is high, it is best to use a single regulated power supply.
4. When a paper jam occurs during use. Be sure to identify the jammed area first, then gently and effortlessly remove the jammed paper. Otherwise, it will damage the relevant parts or paper scraps left in the machine to affect the quality of the sample.
5, printer paper, the minimum can not be less than 52g / square meter, the maximum can not exceed 130g / square meter, it is best to use offset paper or copy paper. Coated paper can not be used in laser printers, mainly because the heating and setting process during the printing process causes the copper plate to foam and affect the use.
6. After the printer is finished, it is very important to maintain the cleaning work. Special attention should be paid to the cleaning of the optical part. The metal tool cannot touch the drum core to avoid permanent damage. In the cleaning, pay attention to the laser is invisible, pay attention to protect the eyes.
7. Users can replace the toner cartridge core regularly and refill the toner according to the production needs. The toner cartridge can be used multiple times; or simply clean it to obtain high-quality text and graphics.
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