Specifications

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SK1-21/31
3- 5．Paper sensor position
SK1-31
Sensor Distance from paper edge
（±1.0mm）
Black mark（Left） Note1,2,3
7.3mm
Gap sensor Note1 29.0mm
Paper empty 50.2mm
Black mark（Right） Note 1,2,3
72.0mm
Note1: Black mark sensor and gap sensor are embedded in the factory as options.
Note2: Choose the position of Black mark sensor either (L) or (R).
Note3: Black mark on reverse of thermal paper is sensed.
SK1-21
Sensor Distance from paper edge
（±1.0mm）
Reflection sensor (Right)
54.2mm
Gap sensor
19.3mm
Reflection sensor（Left） 4.2mm
Note1: Black mark sensor and gap sensor are embedded in the factory as options.
Note2: Black mark on reverse of thermal paper is sensored.
Paper feed
Paper edge Thermal dot line
Black mark (L)
Gap sensor
Paper empty
Black mark(R)
Approx.13.5m
Paper feed
Paper edge
Thermal dot line
Reflection sensor
Gap sensor
Reflection Sensor
Approx.13.5m