Letter printing method using line thermal head

摘要

Letter printing method using line thermal head relates to using ribbon tape effectively so as to cause no unused portion thereof. After one letter print (14) is done at letter printing position (12) of packaging material film (10) with the ribbon tape (30) being unwound, the ribbon tape (30) is rewound by length of the letter print (14). Simultaneously, the ribbon tape (30) is displaced in ribbon tape widthwise direction and next letter print (14) is done. Thereby, the letter print (14) may be done using entire width of the ribbon tape (30) with no unused portion being wasted.