2- 5．Paper Near-End Sensor - SANEI ELECTRIC SK1-21A Technical Manual

2- 5．Paper near-end sensor
Sensing roll paper's remaining amount can be adjusted in three levels by sliding near-end-sensor.
The level is set based on core's diameter in factory default.
Adjusting knob on the holder must be slide in the direction of an arrow by using a fine-tipped tool like
tweezers.
1-inch core
adapter
・Do not mount the printer on vibrating or slanted surfaces.
・The external diameter should be used as a reference value.
SK1-21A/31A
Adjusting
knob
Near-end sensor
Position Detectable paper diameter
1
2
3
Enlarged view
Enlarged view
Adjusting Knob is set at No.3 when 1-inch core
adapter is installed.
φ21.0±2mm
φ24.5±2mm
φ35.0±2mm
Near-end sensor
Scale
Slide direction
Adjusting
knob
Scale
Slide direction
（Unit：mm）
１５