3.1 OVERVIEW; 3.1 OVERVIEW - Page 46

Confidential

3 - 1

3.1 OVERVIEW 

Control Section

Centronics
parallel interface

USB interface

Host Computer

Control
panel

LAN
interface

Printer
data

Fax data

Low- and
high-voltage
power
supplies

AC

LAN (MFC7820N only)

Paper
feeding
mechanism

Laser printing unit

*Provided on models supporting facsimile function.

Charging, exposing,
developing,
transferring, and
heat-fixing processes

- Electrical charger
- Laser unit
  (including the polygon
  motor)
- Laser-sensitive drum
- Developer roller
- Transfer roller
- Heater roller
- Main motor

Scanner unit

ADF unit

NCU*

Line

Speaker

- CIS unit
- CIS motor

- ADF
  motor