Printer paper path sensors
#Sensor Functions
1 Sensor (paper size) Detects the position of paper guides for determining size.
2 Sensor (tray 1 paper present) Detects the presence or absence of paper on the tray.
3 Sensor (pick position) Detects if the pick roller is in position to pick.
4 Sensor (pick) Detects the paper as it is picked and fed to the printer.
5 Sensor (tray 1 pass‑through) Detects the paper fed from optional trays as it enters the printer.
6 Sensor (MPF paper present) Detects the presence or absence of paper on the MPF tray.
7 Sensor (input) Detects the paper as it passes the transfer roller.
8 Sensor (fuser exit) Detects the paper as it passes the fuser.
9 Sensor (narrow media)
Note: This part is found in hot roll fusers
only.
Detects if the paper width is narrow.
10 Sensor (exit) Detects the paper as it exits onto the bin.
11 Sensor (duplex path) Detects the paper as it travels the duplex paper path.
4064
Theory of operation
871
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