How to determine whether the color thermal label paper is expired?

To determine whether the color thermal label paper is expired, you can perform the following steps:

First,Appearance inspection

1.Color and gloss: Observe whether the color of the color thermal label paper is uniform and whether the gloss is normal. Expired label paper may appear to fade in color and reduce gloss.

2.Spots and discoloration: Check the paper for visible spots, discoloration, or discoloration. These signs may indicate that the paper is out of date or compromised.

Second, print test

1.Print effect: Use a thermal printer to print a test page and observe whether the color of the printed content is bright and whether the edge is clear. Expired label paper may cause a decline in print quality, such as dull color, blurred edges, or leakage.

2.Thermal reaction: After printing a short section of characters or patterns, apply some heat to the print area with your finger or other object (such as gently blowing heat with a hair dryer), and observe whether the printed content can be clearly displayed. If the print is blurry or does not display, it may be because the label paper has expired.

Third, touch detection

Surface texture: Touch the surface of the label paper with your hand to feel whether its texture is smooth and delicate. Expired label paper may feel dry, rough, or lose its original texture.

Fourth,Refer to the production date and shelf life

Viewing information: If there is production date or batch number information on the label paper, you can refer to this information to judge its use period. Generally, the shelf life of thermal paper is about 1-2 years under certain conditions (such as suitable temperature and humidity), but the specific shelf life may vary by brand, model and quality.

Fifth,Other methods

1.Accelerated aging test: If conditions permit, you can perform an accelerated aging test to simulate the state of the label after a long period of use. This method requires professional equipment and conditions and is generally not suitable for ordinary users.

2.Consult your supplier: If you are unsure how to tell if a label is expired, consult your supplier or manufacturer for more detailed information and guidance.

In summary, to determine whether the color thermal label paper is expired, it is necessary to consider the appearance, printing effect, touch and production date and other factors. Through comprehensive analysis and testing, the status and applicability of the label paper can be judged more accurately.