Printing Position: As the picture above, the black mark should be printed on the right or left
edge of the side of words.
Width range: width≥7mm
Height range: 4mm≤height≤6mm
Reflectivity of infrared ray : <10% (infrared ray reflectivity of other parts of the black mark
paper is>65%)
HPS: it is the distance between edges of black mark and loading position.
4.5mm≤Hps≤6.5mm
