Paper Registration; Drum Unit - Brother MFC-8460N Servise Manual

3.2.3.2 Paper registration

After the paper top position is detected by the regist actuator front, the paper, separated into
individual sheets by the separation roller, is fed further for a specified time, and the paper top
position reaches the regist roller so that the paper skew is adjusted. Then, the register solenoid is
turned off, the paper feed roller starts turning, and the paper is fed to the transfer roller in the
drum/toner ASSY.
Exposure drum
Transfer roller
Regist actuator rear
The regist actuator rear in the path from the regist roller to the transfer roller controls the first print
position on the paper. The machine starts transferring an image when a definite time passes after
the paper is passed through the regist actuator rear.

3.2.3.3 Drum unit

<Exposure drum>
Generates the latent electrostatic image and develops the image on the drum surface.
<Primary charger >
Forms a uniform charge on the drum surface.
(1) Corona wire
Generates the ion charge on the drum.
(2) Grid
Spreads the ion charge evenly over the drum surface.
<Transfer roller >
Transfers the toner image to the paper from the drum surface.
<Cleaner >
Transfers the toner image to the paper from the drum surface.
Drum/toner ASSY
Regist roller
Fig. 3-14
3 -1 2
Regist actuator front
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