A. Clean the sundries in the printer.
B. Different area or different manufacturer for the printer cause the problem. Should change into compatible ribbon.
Greasy dirt on the printer head block the printer head's working. Should clean the dirt.
A.When the service life of the ribbon ends, replace the core or ribbon in time
B.Print needle strap, check whether print head wear
A.The inked nylon is not compatible with the cartridge, use the compatible one.
B. There is no left twist in accordance with the product, twist to the right
