Callout  | Item  | Callout  | Item  | 
|---|---|---|---|
[A]  | Polygon Motor (With Polygon Mirror)  | [D]  | Lens (L1)  | 
[B]  | Collimating Lens  | [E]  | OPC Drum  | 
[C]  | LD Board  | 
The image read by the scanner is written on the OPC drum [E] with the laser beams. The direction of main scanning is from the front to the rear of the machine. The polygon motor [A] rotates counterclockwise.