TSP143III Resetting with Specific Paper: Diagnostic... | terminalfaults.org

Technical Background:

Thermal printers utilize a print head with tiny heating elements. Variations in paper coating, thickness, or surface properties can affect the thermal transfer process. Differing electrical characteristics of the paper can induce electrostatic discharge (ESD) that affects the printer's microcontroller. Power fluctuations within the store's electrical system can also cause resets, particularly when the printer draws peak power during printing. Furthermore, variations in paper roll tension might put additional strain on the paper feed motor, increasing current draw.

Symptoms:

The Star Micronics TSP143III receipt printer resets only when a specific brand or type of thermal paper is used. The printer functions normally with other paper types.

Possible Causes:

Electrostatic discharge (ESD) from specific paper types affecting the printer's microcontroller.
Paper dust or coating residue accumulation on the print head causing erratic thermal behaviour. Some paper coatings can create more residue than others.
Power supply fluctuations or brownouts within the store's electrical system, exacerbated by the printer's peak power draw during printing.
Incompatibility between the printer's firmware and the specific paper type's thermal properties. Some paper may require different heating profiles.
Increased load on the paper feed motor due to paper roll tension or thickness variations. This motor load can induce voltage drops.
Faulty or degraded power adapter providing insufficient or unstable power.

Solution:

1

Use Safe Handling: Unplug the printer from the power outlet.
2

Clean the print head with a specialized thermal print head cleaning pen or isopropyl alcohol (90% or higher) on a lint-free cloth. Ensure the printer is powered off during cleaning.
3

Test with multiple brands and types of recommended thermal paper to isolate the problematic paper. Note the exact specifications of the problematic paper (weight, coating, manufacturer).
4

Check the power outlet voltage using a multimeter to ensure it is within the specified range (typically 110-120V in North America).
5

Use a different power outlet on a different circuit to rule out localized power issues.
6

Connect the printer to a UPS (Uninterruptible Power Supply) to stabilize the power supply and prevent voltage fluctuations.
7

If available, update the printer's firmware to the latest version from the Star Micronics website. Follow the manufacturer's instructions precisely.

Safety Warning:

Risk of electric shock. Always use Safe Handling by unplugging the printer before cleaning or inspecting any connections. Avoid using excessive force when cleaning the print head. Do not use flammable solvents. Be mindful of ESD, especially in dry environments. Ensure the power outlet is properly grounded.

Prevention:

Regularly clean the print head to prevent paper dust and coating buildup.,Use only thermal paper that meets the manufacturer's specifications.,Ensure the printer is connected to a stable power source, preferably with surge protection.,Implement cable strain relief to prevent damage to the power and data cables.,Minimize static electricity in the environment, especially during dry winter months. Use anti-static mats and sprays if necessary.,Store thermal paper in a dry, cool place to prevent moisture absorption and coating degradation.

Expert Tip:

Some thermal paper types are more prone to causing ESD than others. Try grounding the printer chassis to a known earth ground (e.g., a metal pipe) to mitigate ESD-related resets. Use a shielded power cable to reduce EMI from other devices. If the problem paper has a glossy coating, it may cause more static than matte paper.

Frequently Asked Questions

•What are the recommended thermal paper specifications for the TSP143III?

Refer to the Star Micronics TSP143III user manual for the recommended thermal paper specifications, including width, thickness, and coating type.

•How do I update the firmware on the TSP143III?

Firmware updates are typically available on the Star Micronics website. Follow the specific instructions provided for your operating system and printer model.

•What type of cleaning pen is recommended for thermal print heads?

Use a specialized thermal print head cleaning pen designed for thermal printers. These pens typically contain a solvent that effectively removes residue without damaging the print head.

TSP143III Resetting with Specific Paper: Diagnostic Report

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What are the recommended thermal paper specifications for the TSP143III?

•How do I update the firmware on the TSP143III?

•What type of cleaning pen is recommended for thermal print heads?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: