FAQ

White powder appears on the printhead during printing.

Root Cause Analysis: 　　
· Excessive print energy level 　　
· Excessive print speed 　　
· Excessive print pressure/tension 　　
· Poor back-coating quality 　　
· Mismatch between ribbon and printer 　　
· Accumulation from prolonged use
Solutions: 　　
· Reduce print energy level 　　
· Reduce print speed 　　
· Decrease print pressure 　　
· Replace with ribbon featuring better back-coating 　　
· Replace ribbon model or printer 　　
· Clean print head with alcohol swab or sandpaper

Main Causes: The primary reasons for such issues lie in the incompatibility between the thermal transfer ribbon and label material, or improper printer settings. You can refer to the following symptoms for corresponding adjustments. 

1. Blank Spots or White Dots in Printed Content Cause Analysis: 
– Printing speed too fast; printing temperature too high or too low
– Label surface is too rough
– Foreign matter on the print head or rubber roller
– Poor ribbon coating
Solutions:
– Adjust printer parameters (reduce speed, adjust temperature)
– Choose labels with better surface smoothness
– Clean foreign matter from the print head or rubber roller
– Replace with a ribbon featuring better coating 

2. Vertical White Lines in Printed Content Cause Analysis:
 – Damaged print head
 – Buildup on the print head
Solutions:
 – Replace the print head
 – Clean the print head 

3. Black Lines or Smudging in Printed Content Cause Analysis:
– Excessive printer pressure
– Label material is too thick
– Foreign matter on the print head
– Print misalignment, presence of a “reverse” mode during printing
Solutions:
– Reduce printer pressure
– Replace with thinner labels
– Clean the print head
– Adjust printer tension shaft tension, change print mode 

4. Burrs, Tailing, or Blurring on Labels Cause Analysis:
– Printing temperature too high
– Printing speed too fast
– Excessive printing pressure
– Ribbon type mismatch, ink layer too soft
– Use of incompatible printer type
Solutions:
– Lower printing temperature
– Reduce printing speed
– Decrease print head pressure·Replace with higher specification grade ribbon ·Replace with other types of printers

Main reasons:
The print head temperature is too low or the printing speed is too fast, causing excessive pressure from the print head and deforming the printing medium.
1. Printing temperature too low Increase the printing temperature
2. Printing speed too fast Reduce the printing speed
3. Printing pressure too low Increase the printer pressure
4. Print head or rubber roller is dirty Clean foreign matter from the print head or rubber roller
5. Label unsuitable or quality fluctuations in labels Replace with new or suitable labels
6. Mismatch between ribbon and material Replace with a compatible ribbon

1. The ribbon width is too wide compared to the label.
· The ribbon width must be suitable for the substrate width. It is recommended to use a ribbon width that is 2mm~5mm wider than the substrate on each side.
2. Excessive printhead pressure or tension.
 · Reduce the printer’s pressure and adjust the tension shaft tension.
3. The printing temperature is too high.
· Lower the printing temperature.
· Overheating of the printhead may cause/increase wrinkles.
· If the printing temperature cannot be adjusted, it may be necessary to switch to a ribbon made of a different material.
4. The ribbon has wrinkles.
· During production, ribbon wrinkles may originate from several aspects: PET raw material, slitting technology, and coating quality
. Contact the supplier to replace with a qualified ribbon.
5. Poor ribbon back coating.
· Contact the supplier to replace with a qualified ribbon.
6. Poor printhead positioning.
· Adjust the printhead position.
· Refer to the printer manual for precise calibration.

If you have installed the ribbon correctly but still experience issues such as ribbon breakage or wrinkling, you may need to consider other possible causes. For example, the printing temperature is too high, the print head is dirty, the printing speed is insufficient, or excessive pressure is applied to the print head.
1. Damaging the ribbon during unpacking or installation; do not damage the ribbon when unpacking or installing it.
2. The printing temperature or pressure is set too high; reduce the printing energy level or print head pressure.
3. The back coating of the ribbon is of poor quality; contact the supplier to replace it with a qualified ribbon.

1. The pressure adjustment lever above the print head has inconsistent pressure. Solution: Increase the pressure on the unclear side by adjusting the pressure lever.
2. The print head has been used for a long time, causing mechanical instability, looseness, or partial damage. Solution: Replace with a new print head.

Root Cause Analysis:
1. The printer operation mode was not switched to thermal transfer mode.
2. The shaft for installing the ribbon is deformed or damaged.
3. Poor quality of ribbon backing adhesive with insufficient smoothness.
Solutions:
1. Change the printing method of the printer.
2. Replace the shaft for installing the ribbon.
3. Use ribbons with better smoothness.

Root Cause Analysis: 
Check if the software system is malfunctioning and whether calibration was skipped when changing label specifications in “Web Detection” mode.

Solution:
Restart the printer for testing. If the issue persists, update to the latest driver, reload the label paper, and perform calibration.

Root Cause Analysis:
1. The ribbon is installed backward.
2. The print energy level is set too low.
3. The ribbon and label paper are incompatible.
Solutions:
1. Install the ribbon correctly, ensuring the ink side contacts the label paper.
2. Increase the print energy level for testing.
3. Replace with a compatible ribbon.

Root Cause Analysis:
1. The label paper used does not meet the printer’s quality requirements.
2. The specifications of the label paper used differ from the printer’s settings.
3. There are foreign objects or paper jams in the printer’s feeding position.
4. The print head is dirty or obstructed by foreign objects, affecting normal printing.
Solutions:
1. Replace with higher-quality label paper.
2. Adjust the print settings or use label paper with matching specifications.
3. Inspect the feeding position to ensure smooth paper feeding.
4. Clean the print head regularly or replace it with a new one.

Root Cause Analysis:
1. The label paper is not installed or adjusted to the proper position.
2. The ribbon is installed incorrectly.
3. The sensor is damaged or obscured by dust.
Solutions:
1. Reinstall the label paper and adjust the limiter to the proper position.
2. Check if the ribbon is installed correctly.
3. Clean dust or debris from the sensor, or replace it with a new one.

Root Cause Analysis:
1. The ribbon is incompatible with the packaging material, resulting in poor adhesion when printed.
2. The printing speed is too high, causing incomplete adhesion of the printed content to the packaging material.
3. The print density is too low, leading to weak adhesion between the printed content and the packaging material.
Solutions:
1. Identify higher-quality hybrid or resin-based ribbons based on current durability requirements.
2. Reduce the printing speed to improve the adhesion of the printed content to the packaging material.
3. Increase the print density to enhance the adhesion of the printed content to the packaging material.

Root Cause Analysis:
1. The ribbon does not support higher printing speeds.
2. The model of the thermal transfer printer does not support higher printing speeds.
3. Poor compatibility between the ribbon and packaging material prevents transfer at higher speeds.
4. The printer’s rubber roller is too soft to provide effective transfer.
Solutions:
1. Replace the ribbon with one suitable for high-speed printing.
2. Upgrade to a thermal transfer printer that supports higher printing speeds.
3. Identify a ribbon model with better compatibility for the packaging material.
4. Replace the rubber roller with a harder one.

Root Cause Analysis:
 1. Poor heat resistance of the ribbon adhesive.
2. Excessive temperature in the print head cavity during continuous printing.
Solutions:
1. Replace with a product that has better heat resistance.
2. Reduce the print density and pause operation after prolonged use, resuming only after cooling down.

Root Cause Analysis:
1. Excessive printer pressure
2. Print density too low or too high
3. Foreign object on the print head or broken pin in the print head
4. Contaminated rubber roller
5. Mismatch between carbon ribbon and packaging material
Solutions:
1. Reduce printing pressure
2. Decrease or increase print density
3. Clean the print head clockwise with alcohol swabs or replace the print head
4. Wipe the rubber roller
5. Replace the carbon ribbon or packaging material

Root Cause Analysis:
1. Wrinkling of the ribbon during printing
2. Excessive printing speed or high print density
3. Mismatch between packaging material and ribbon
4. Contamination at the specific position of the packaging film
Solutions:
1. Reinstall the ribbon
2. Reduce print density and printing temperature
3. Replace with another type of ribbon
4. Wipe the packaging material or replace it with clean material

Cause Analysis:
1. The print head is not positioned directly in the center of the platen roller.
2. The rubber roller may be damaged or worn.
3. The print head pressure is improperly adjusted.
4. The print distance is incorrect.
5. The print density setting is insufficient.
Solutions:
1. Adjust the print head to ensure it is pressed directly in the center of the rubber roller.
2. Replace the rubber roller with a new one.
3. Increase or decrease the print head pressure as needed.
4. For different models of thermal transfer coders, the optimal print distance between the print head and the rubber roller/pad varies. Adjust the bracket according to the machine model to achieve the best print distance.
5. Increase the printer’s print density.

Root Cause Analysis:
1. The conveyor belt of the coding machine did not effectively press the labels in place.
2. The pressure adjustment of the paging machine during label separation was either too tight or too loose.
3. The conveyor speed of the paging machine did not match that of the coding machine.
4. The print head was not centered.
5. The hardness of the impression roller was too soft.
Solutions:
 1. Adjust the position of the TTO coding machine’s conveyor belt to ensure it evenly presses the labels.
2. Adjust the pressure of the paging machine during separation to ensure uniform label transfer.
3. Set the paging machine speed to 1-2 times higher than the conveyor speed of the coding machine.
4. Adjust the print head to the centered position.
5. Replace the impression roller with one of higher hardness.

Root Cause Analysis:
1. The take-up position of the ribbon on the take-up shaft does not align with the pay-out position on the supply shaft.
2. Bending of the take-up shaft or supply shaft.
3. Contamination of tension shafts or other shafts due to adhesive residue, ink buildup, etc.
4. Whether the inner diameter of the ribbon core is appropriate.
Solutions:
1. Rewind the ribbon to align the take-up and pay-out winding positions.
2. Inspect the take-up and supply shafts, perform repairs or replacements as needed.
3. Clean all shafts to maintain cleanliness and smoothness.
4. Replace with the correct core.

Root Cause Analysis:
 1. The winding or unwinding shaft of the coding machine is bent or not running smoothly.
2. The heat resistance of the carbon ribbon is poor, causing deformation under high temperature during operation.
3. The printing concentration is too high or the pressure is excessive.
4. The gap between the print head and packaging material is set too small.
Solutions:
1. Inspect and maintain/replace the winding and unwinding shafts of the coding machine.
2. Replace with carbon ribbon that has better heat-resistant adhesive.
3. Reduce printing concentration or decrease printing pressure.
4. Increase the distance between the print head and packaging material.

Root Cause Analysis:
1. The carbon ribbon was installed inside out.
2. The print density is too low or the pressure is insufficient.
3. The carbon ribbon is incompatible with the packaging material.
Solutions:
1. Reinstall the carbon ribbon correctly by following the printer’s installation guide to distinguish the inner and outer sides.
2. Increase the print density or apply greater printing pressure.
3. Replace the packaging material or find a more compatible carbon ribbon.