Why Does Your Receipt Turn Black?
Why Your Receipt Turns Black and How to Properly Store Thermal Paper
Why Does Your Receipt Turn Black?
If you've ever picked up a thermal receipt only to find that it has turned black, you may be wondering why this happens. Thermal paper is sensitive to heat, which is how it works in printing. However, it is also highly reactive to environmental factors such as heat, light, and humidity. Over time, if not stored correctly, your thermal receipts can change color, becoming hard to read or entirely blackened.
Common Reasons for Blackened Receipts:
- Exposure to Heat: Leaving receipts in hot environments (like inside a car) can trigger the chemical reaction that darkens the paper.
- Light Exposure: Sunlight and even fluorescent lighting can cause fading or darkening of thermal receipts.
- Humidity: Moisture in the air can weaken thermal paper’s chemical structure, making it more prone to blackening.
- Poor Quality Paper: Low-quality or non-BPA-free thermal paper is more susceptible to discoloration over time.
How to Properly Store Thermal Paper
To keep your receipts readable for longer, follow these storage tips:
- Store in a Cool, Dry Place: Keep receipts and paper rolls in a controlled environment away from heat and humidity.
- Avoid Direct Sunlight: Prevent fading by keeping receipts away from bright light sources.
- Use BPA-Free Thermal Paper: High-quality, BPA-free thermal paper lasts longer and is safer for both people and the environment.
- Keep in Proper Packaging: Store thermal paper rolls in their original packaging until use to protect them from light and air exposure.
Recommended Thermal Paper Products
For high-quality thermal paper, check out these products:
