Troubleshooting Thermal Printer
Do you want to know about various problems that can occur with thermal printer and the tips to troubleshoot them?
A thermal impact printer uses heated pins to burn images onto the heat-sensitive paper. Although, they are cheap and print relatively fast, they produce low resolution print jobs. To print, one has to insert a thermo-sensitive paper between the thermal head and the platen. The printer will then send an electrical current to the heating resistor of the thermal head in the printer, which in turn will generate heat in a prescribed pattern. The heat will activate the thermo-sensitive coloring layer of the thermo-sensitive paper and give a pattern of color change in response. This printing mechanism is known as a thermal system or direct system. The paper is impregnated with a solid-state blend of a dye and an appropriate matrix. The controller boards are embedded with firmware to manage the printing mechanisms in the thermal printer. The firmware has the ability to manage multiple bar code types, graphics and logos.
Problems that can occur with thermal printer and tips to troubleshoot them are mentioned below:
- Poor edge definition
- Image is grayish or translucent
- Streaks or dead spots in the printed image
Poor edge definition
Poor edge definition is primarily an issue with bar codes. This can mainly happen when the ribbon and media are not compatible or in those cases when the print speed is too fast. To fix the issue, you need to refer the compatibility of the ribbon and media and as per the requirements make the necessary changes. You also need to reduce the print speed. Sometimes, the reason can also be that the print head heat level is too high. If so, reduce the energy or heat setting of the printer.
Image is grayish or translucent
Sometimes, you can see that the image is grayish or translucent, even though the characters are full. The reasons for this issue in the thermal printer can be many like the print head energy level is set too high or if the print head pressure is too high or when the ribbon and media are not compatible. The immediate troubleshooting methods can be to reduce the print head energy. You will also have to reduce the printer pressure. Along with this, confirm that the ribbon is compatible. If not, then replace it.
Streaks or dead spots in the printed image
If you notice the presence of streaks or dead spots in the printed image output, then it may be due to the poor coating quality on the media or may be because of the dirty or obstructed print head elements. It can also be because of that the preprinted ink is picking. So, as the method to solve, first you should ensure that the media is of good quality. Also, clean the print head of your thermal printer with a presaturated cleaning card or soft stemmed cotton cloth. You can also try by replacing the media stock.
iYogi is a leading provider of online subscription-based technical support services offered directly to consumers and small businesses across a wide range of computing and communications devices and software. With a pool of thousands of tech experts, the company offers its services primarily through long-term unlimited service subscription plans of 1 to 3 years, on a 24/7 basis 365 days a year. Our Annual Subscription covers the following services:
- Comprehensive support for Troubleshooting Thermal Printer.
- Diagnostic & repair for your technologies.
- Troubleshoot software errors.
- Update drivers and security to protect against online threats.
- Connect to Internet, devices and peripherals.
- Optimize your computer’s speed and performance.
Unlimited access to wide range of service offerings, all year around! iYogi’s resolution rates are amongst the highest in the technical support industry.