Electrical Characteristics Note on printing with a high print ratio If printing is continuously performed with a high print ratio, the overcurrent protection may be activated and result in uneven print density or a low voltage error. Therefore, the printing length must not exceed the following values when printing with high print ratio. Print ratio: Number of dots being energized per one dot line / Total number of dots per one dot line (576 dots) Maximum permissible printing length on print ratio 28 Supply voltage AC 100-240V 50/60 Hz Rated current 1.0 A Print ratio 80% 100% Print example 58 mm 72 mm Print length 30 mm 20 mm