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Friends who often use bar code printers should have encountered more or less, and garbled characters appear during printing. The reason for this is very complicated. This article discusses this phenomenon so that everyone can know the cause of garbled characters and Solution.
Simple discriminating method can take your barcode printer to another computer that can print normally and try to see if it is garbled. If the printing is normal, it proves that the fault is related to the host, or one is used normally on another computer. Try to connect the barcode printer to your computer. If it is normal, the fault is related to your printer. Of course, this is only the simplest way to determine where the problem is. To solve the problem, we have to go through the software to the hardware, and check the problem one by one.
First, the software solution
1. Change the bar code printer parallel port mode in the BIOS settings (if you are using a traditional print line instead of a USB print line), enter the BIOS, "Integrated peripheral→parallel port mode", there are four modes "SPP" ( Standard parallel port), "EPP" (enhanced parallel port), "ECP" (extended parallel port), "ECP+EPP", if your bar code printer model is older, it is recommended to set it to SPP mode, and the current mainstream bar code The printer is recommended to be set to ECP+EPP mode (of course you can try it in several modes).
2. The dot matrix printer, including the ordinary needle printer and the ticket printer, has two modes of LQ emulation and self-printing. If the mode used is incorrect, printing may also be garbled (the print mode can be changed in the printer properties) .
3. Barcode printer driver installation is not correct or damaged may also cause garbled printing. It is recommended to reinstall the latest printer driver (available on the official website). After the driver is installed, you can print a test page to test whether the printer is normal.
4. If the font used for printing is not installed or damaged, garbled characters may also appear. If the font is not installed or damaged, you can open "Control Panel → Font", double-click the font icon, and click the "File" menu in the window that opens. , choose to install a new font.
5. Software conflicts, using pirated software, such as some decrypted version of the financial reporting system, often cause the driver to be abnormal, resulting in garbled printing, even if some genuine software, because the installation of the dongle on the print port, often leads to Printing is abnormal.
6. The virus causes printing abnormalities, and sometimes the garbled printing may occur due to the presence of viruses. For example, if a worm causes the computer to print garbled for no reason, it is recommended to use the latest version of anti-virus software such as Norton for killing.
7. The system file is damaged or lost, causing abnormal printing or garbled. Solution: (1) Extract from the operating system installation disk or restore the corresponding system file with the system's own tools. (2) Reinstall the operating system.
Second, the hardware solution
1. Barcode printer cable failure causes garbled printing. Sometimes the open or short circuit of the printed cable and its interface may cause garbled printing. You can run the command "dir>prn" under MS-DOS to check if the barcode printer cable is faulty.
2. Barcode printer's own hardware failure, you can use the printer self-test (the self-test methods of bar code printers of different brands are different, please refer to the bar code printer manual) to determine whether the bar code printer has hardware failure. If it is really a problem with the printer, it can only be repaired.
3. Barcode printers have insufficient memory. When a print file is too large, garbled characters may appear. The best way is to expand the memory of the barcode printer. However, this situation is rare, and it occurs in the early memory. On the printer.
4. The motherboard parallel port (printing port) is damaged and the printing is abnormal. This kind of situation is rare. The best way is not to print with the parallel port and replace it with a USB cable. Of course, if there is no USB port on the printer or the host, you can only repair or replace the motherboard.
5. The I/O control chip on the motherboard is damaged. In fact, this situation is not difficult to distinguish. Because the I/O control chip on the motherboard is damaged, it often brings many complications, and many input and output devices will be affected. To solve the problem, you can only repair the motherboard!
6. The exclusion of the discharge near the print port (which can be seen on almost all current motherboards) is damaged. Sometimes the resistance value changes due to external factors, and garbled characters may appear. The fault can be solved simply by replacing the new displacement.
7. Printing with the switch box may also cause garbled printing. Replace the switch box with the guaranteed quality or do not use the switch box for printing.
The above is the reason and solution for the garbled barcode printer. If you want to know more about the barcode equipment, please leave your question through the comment area, we will answer your questions as soon as possible, so that you are satisfied.