Brother International TD-4420TN FBPL Command Reference - Page 204
SET GAP, Description, Syntax
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11.10 SET GAP Description Adjust the gap sensor emission sensitivity. The printer initiates automatic gap sensor calibration when the PAUSE key is held down while powering up. Use this setting when auto calibration does not work because the thickness of the backing paper and that of the label with backing paper are not within the sensor's detection range or there are pre-printed marks or patterns on the label. This setting will be saved in the printer memory when turning off the power. Syntax SET GAP n/AUTO/OFF/0,/REVERSE/OBVERSE Parameter N AUTO OFF 0, REVERSE OBVERSE Description Gap sensor light emission strength. Available range is listed as below. 0 is the lowest sensitivity. Feed 2 or 3 labels to calibrate the gap. If the label is continuous, the printer will feed label to limit 10~20 inches to confirm if the label is continuous. Disable the SET GAP AUTO function. Automatically calibrate the gap size. This function is used when the black mark, the separation between labels, can't be detected by the black mark sensor. The parts of the media which can be passed through by the gap sensor are defined to be the printable area, otherwise it will be defined to the gap of the media. Disable the SET GAP REVERSE function. Printer model TD-4420TN/4520TN TD-4650TNWB / TD-4650TNWBR, TD-4750TNWB / TD-4750TNWBR RJ-2035B / RJ-2055WB RJ-3035B / RJ-3055WB TJ-4020TN / TJ-4021TN / TJ-4021TNR/ TJ-4120TN / TJ-4121TN / TJ-4121TNR Gap Sensor Black Mark Range Sensor Range 0~15 0~3 SET GAP REVERSE SET GAP OBVERSE SET GAP AUTO V 0~15 0~3 V 0~7 0~7 V 0~15 0~3 V Note: In SET HEAD OFF mode, SET GAP AUTO function doesn't work even the printer head is opened and closed, but it can work when power on the printer. 199
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