<If you are using an impact dot printer>

•The ink ribbon is not set correctly.
Verify the state of setting the ink ribbon. If not set correctly, set the ink ribbon correctly and try printing.

•Life and failure of printer head
Verify whether the dot missing is on specific line.
If the dot missing is specific line, life or failure of printer head is assumed. Ask the agent you purchased your printer for repair.

<If you are using a thermal printer>

•Dirt or foreign object on thermal head
Check for paper dust or foreign object on the thermal head.
If dirt or foreign object is present, try cleaning of thermal head by referencing the user’s manual.

•Disconnection of heating element of thermal head
Check for a scratch that might cause disconnection of the heating element of the thermal head
If any scratch that might cause disconnection of heating element is present, replacement of thermal head is required. Ask the agent you purchased the product for repair.