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Incorrect print temperature, possibly too low;

Printer pressure too low;

Abnormal ribbon proper, exhibiting white spots, white streaks, or other anomalies;

Ribbon and label mismatch, e.g., using resin ribbon on coated paper or rough paper;

Ribbon type incompatible with printer type;

Dirty print head or roller shaft; Uneven printing material on printed labels.

Increase the print temperature. You may try adjusting the “density” or “blackness” in barcode editing software or the printer properties interface.

Adjust the printer pressure appropriately. Note: Industrial printers have dedicated pressure adjustment mechanisms, while some desktop models may lack this feature.

Inspect the ribbon under transmitted light for abnormalities such as white spots or streaks.

Verify if the ribbon and label are incompatible, e.g., resin-based ribbon used on coated paper or rough paper;

Check if near edge ribbon is used in a flat-head printer or vice versa;

Clean the print head and roller shaft with alcohol wipes;

Switch to blank labels to rule out ribbon issues.

Wrinkling caused during slitting.

You can clearly see if there are any wrinkles just by looking at the appearance. If there are, you can return or exchange it.

The ribbon paper core is deformed, showing compression damage;

The ribbon paper core has excessive burrs and too many paper scraps;

The printer's unwinding shaft is deformed and not straight;

If the ribbon slips on the unwinding shaft, check whether the shaft's spring plate is malfunctioning.

Inspect the paper core for noticeable deformation or if it has become significantly oval-shaped. If so, return or exchange it.

Inspect the paper core for paper debris or burrs. Clean it and try again. If the issue persists, deformation is likely—return or exchange it.

Check the printer's feed rollers for deformation or foreign matter adhering to the shaft. Replace or clean the feed rollers if necessary.

If the issue persists, replace the spring clip. If not, the paper core's inner diameter may be too large—simply attach one or two labels to the inner wall.

The ribbon itself has excessive static electricity;

The printer is not grounded.

When printing, place the machine on a conductive surface whenever possible. If this is not feasible, install an electrostatic discharge (ESD) protection device on the printer.

Ground the printer.

The ribbon backcoat is rough, has insufficient coating, and exhibits high friction;

The printer pressure is set too high;

The machine is configured to print in “direct thermal” mode.

Use adhesive tape to stick to the ribbon backing coating and check if it peels off easily. If it's difficult to peel off, it indicates a backing leak.

Adjust the printer pressure to reduce the print head pressure while maintaining print clarity.

In the printer's “Print Preferences,” switch back to “Thermal Transfer Mode.”

The ribbon is not fully dried;

Excessive printer pressure;

Label material is too thick;

The printer experiences a retraction during printing.

Unroll a section of the ribbon and lay it flat on the platform. Gently press the ink layer with your fingers to check if significant amounts stick to your hands;

Reduce the print head pressure on the printer;

Excessively thick labels may also develop indentations. Adjust the printer pressure appropriately based on the label thickness;

During printing, abnormal machine settings may cause each label or every few labels to retract, resulting in retraction friction marks;

Ribbon backing coating leakage;

Ribbon end surface damage;

Printing temperature too high;

Printer pressure too high;

Use adhesive tape to stick to the ribbon's backing coating and see if it peels off easily. If it's difficult to remove, it indicates a backing leak.

Inspect the ribbon's end surface for notches or rough edges. Gently pull the ribbon to check if it breaks easily.

When printing is clear, reduce the print temperature as much as possible.

Adjust the printer pressure to minimize printhead pressure while maintaining print clarity.

The ribbon exhibits systematic skipping;

The printer's rubber roller shows localized damage;

The label surface displays systematic oil stains and adhesive overflow.

Inspect the ribbon for consistent gaps in coverage by holding it up to light;

Check the printer's rubber roller for damage or pitting; replace if found (if this roller cannot be repaired);

Try replacing the label roll to see if the issue resolves.

The ribbon itself is wrinkled;

The print head is dirty;

The print head has broken pins (or possibly false broken pins);

Uneven pressure on the print head causes the ribbon to skew and wrinkle during printing;

The printer's retaining plate is loose;

The printer's transfer roller is loose, causing the ribbon to wrinkle before entering the print head;

Excessive printing temperature causes the base ribbon to wrinkle from heat damage.

Inspect the rubber roller shaft for wear. If severely worn, replace the shaft.

Check the ribbon for noticeable wrinkles. Try a new roll to see if the issue persists.

Clean the print head with an alcohol swab.

First clean the area with white lines using an alcohol swab, then test again. If white lines remain after cleaning, this indicates a broken print head needle. Replacement is recommended.

Adjust the printhead pressure to see if it improves;

Check if the metal stop plate where the ribbon exits the printhead is loose; tighten if necessary;

Inspect the metal transition roller where the ribbon enters the printhead for looseness; tighten if required;

Lower the print temperature to see if it improves.

Uneven ribbon coating (back coating or surface coating);

Dirty print head or roller shaft;

Uneven printer pressure;

One-sided wear on the roller shaft;

Inspect the ribbon coating for noticeable differences;

Clean the print head and roller shaft with an alcohol swab;

Adjust the printer's left-right pressure. Note: Industrial printers have dedicated pressure adjustment mechanisms, while desktop models may or may not have them;

Check the roller shaft for wear. If severely worn, replace the roller shaft.