Paper Presence And Size Detection - Lexmark M52 Series Service Manual

Paper presence and size detection

The paper size is detected based on the length guide position. The width guide prevents deskewing.
The fingers of the paper size sensor actuator move according to the position of the paper length guide. The
sensor (paper size) detects the formation of the actuator and determines the dimensions of the paper.
When the tray is empty, the paper presence sensor actuator triggers the sensor (paper present).
1 Paper length guide
2 Paper width guide
3 Paper presence sensor actuator
4 Sensor (paper present)
5 Paper size sensor actuator
6 Sensor (paper size)
Theory of operation
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