Canon iPF6100 Service Manual page 147

Chapter 2
Feed roller encoder sensor
Feed roller HP sensor
F-2-53
Feed roller HP sensor
The feed roller HP sensor detects the change from the white portion (unshielded sensor light) to black portion
(shielded sensor light) of the encoder film on the feed roller, thus setting the home position for feed roller
eccentricity compensation.
Feed roller encoder sensor
The feed roller encoder sensor detects the slits on the encoder film of the feed roller during feed motor rotation,
thus detecting the amount of rotation of the feed roller (media feed amount).
2-69