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Operation of Each Mechanism
2-7 CL-S6621
2-1-3. Label/Tag Detection Mechanism
The major components of the label/tag detection mechanism are:
(a) Reflective sensor (Bottom sensor) (SA Ref Sen PCB)
(b) Transparent sensor (Upper sensor) (SA TRA Sen PCB)
There are two movable sensors, the reflective sensor (bottom sensor) and the transparent sensor
(upper sensor). As you adjust the sensor position with the blue knob (“Gear Bevel Lead Screw U”),
both sensors move at the same time.
As shown in the figure below, the reflective sensor has two LEDs and one phototransistor. The
reflective sensor is used to detect black marks at the back of tag. On the other hand, the
transparent sensor is a phototransistor that will receive the transparent light from the LEDs through
the media. The transparent sensor is used to detect labels on liner or U-shaped notches of tag.
Both reflective and transparent sensors are used to detect the media end.
Aligning the sensors for label paper or tag with U-shaped notches:
For label paper, turn the blue knob (“Gear Bevel Lead Screw U”) to align the mark of the
transparent sensor at the center of label. (The transparent sensor and the reflective sensor move
at the same time.) For tags with U-shaped notches, turn it to align the mark with the U-shaped
notch.
Aligning the reflective sensor for tag with black marks:
For tag with black marks, turn the blue knob (“Gear Bevel Lead Screw U”) to align the left side
mark of the reflective sensor with the black mark of tag.